Page 1 of 8 12345 ... LastLast
Results 1 to 100 of 737
  1. #1
    mtbr member
    Reputation: zuuds's Avatar
    Join Date
    Jan 2004
    Posts
    447

    Gemini Duo clones

    Anyone have one of the Gemini Duo clones from Ali Express or Fasttech?

    What's the practical difference (if any) between the XM-L U2 and XML2 T6 LED's?

  2. #2
    mtbr member
    Reputation:
    Join Date
    Nov 2012
    Posts
    979
    I think there are a couple of guys that have one on order. It's a great looking light. The only thing that worries me is the description of the lens as 60 degree. That's a super flooder, and probably not very useful for riding. And this is coming from a guy who likes a flood light. The 872 clone I'm using has about a 22 degree hot spot and that is more than enough. That's just the hot spot though, it really shoots light everywhere. So hopefully the Duo clone has a smaller than 60 degree hot spot. Otherwise it would just be too dim even with 2 leds.

  3. #3
    mtbr member
    Reputation:
    Join Date
    Apr 2007
    Posts
    182
    Gemini Duo, Gloworm X2, and Lupine Piko are similar housing designs. It's about time those cnc shops in china started cloning them.

    I have one on order. Hopefully the "60 degree" lens is just a typo, otherwise it's not usable on the trail or road.

  4. #4
    mtbr member
    Reputation:
    Join Date
    Feb 2006
    Posts
    1,698
    Quote Originally Posted by mrbubbles View Post
    Hopefully the "60 degree" lens is just a typo, otherwise it's not usable on the trail or road.
    It's probably more like 6 degree, lol.

    Those who have ordered please let us know!

  5. #5
    mtbr member
    Reputation:
    Join Date
    Apr 2007
    Posts
    182
    The lens on the product shot of the clones look like the gemini duo, so if the beam pattern is similar to the gemini duo, that's acceptable.

    Gemini Duo – 2013 Mtbr Lights Shootout | Mountain Bike Review

  6. #6
    mtbr member
    Reputation:
    Join Date
    Jul 2007
    Posts
    1,106
    I ordered a red one from FastTech a week ago, hope to have it soon.

    Depending on brightness and beam pattern, I MIGHT be removing the mount and using 3M Dual Lock tape and mounting it flush on my helmet for a nice low-profile set up. We'll see. But I'll do a brief review for sure.

  7. #7
    mtbr member
    Reputation: Huckler's Avatar
    Join Date
    Nov 2004
    Posts
    167
    I just bought the Duo from Gemini, and it is sweet. Now I just bought the Fastech version to compare. At $51 bucks, how could you go wrong?

  8. #8
    mtbr member
    Reputation:
    Join Date
    Nov 2012
    Posts
    979
    Quote Originally Posted by Huckler View Post
    I just bought the Duo from Gemini, and it is sweet. Now I just bought the Fastech version to compare. At $51 bucks, how could you go wrong?
    That would be a great comparison! I would be particularly interested in the difference in beam shape and brightness. Thanks.

  9. #9
    mtbr member
    Reputation:
    Join Date
    Aug 2010
    Posts
    122
    Are these clones available in colours? I'm curious because I saw a Gemini Duo on ebay for about $200 and was going to get it but the colour option raised red flags as did the 4400mAh battery as opposed to a 5200. Good thing I didn't get suckered into paying 2 bills for a $50 light! I hate sellers like this who try to pass fakes as legit.

  10. #10
    mtbr member
    Reputation:
    Join Date
    Jul 2007
    Posts
    1,106
    Yes, the clones come in colors, black, red and blue.

  11. #11
    mtbr member
    Reputation: zuuds's Avatar
    Join Date
    Jan 2004
    Posts
    447

    Idea!

    Just arrived today, this thing is tiny! Seems so far so good. the beam shots are on high and from about 8' away.

    Gemini Duo clones-img_20130930_183023_347.jpg
    Gemini Duo clones-img_20130930_183048_288.jpgGemini Duo clones-img_20130930_183221_120.jpgGemini Duo clones-img_20130930_183147_108.jpg

    I have a dumb question about the charger (it didn't come with a manual so I couldn't RTFM). The battery appeared to shipped charged, because the light worked when I first connected it to the battery out of the box.

    When I plugged the charger into the wall, the LED on the charger illuminates solid green with nothing attached to it. When I attached the battery to the charger, it remained solid green. How do these chargers typically operate - Does solid green means the battery is fully charged? Does the LED on these chargers blink or turn red they're charging or something else is going on?

  12. #12
    mtbr member
    Reputation:
    Join Date
    Jul 2007
    Posts
    1,106
    zuuds, what date did you order yours? I ordered mine on 9/13 through FastTech, it still hasn't left Hong Kong according to the USPS tracking. Grrr!

  13. #13
    mtbr member
    Reputation: zuuds's Avatar
    Join Date
    Jan 2004
    Posts
    447
    Quote Originally Posted by fightnut View Post
    zuuds, what date did you order yours? I ordered mine on 9/13 through FastTech, it still hasn't left Hong Kong according to the USPS tracking. Grrr!
    9/17. I had it shipped to a business address in California.

  14. #14
    mtbr member
    Reputation:
    Join Date
    Jul 2007
    Posts
    1,106
    Quote Originally Posted by zuuds View Post
    When I plugged the charger into the wall, the LED on the charger illuminates solid green with nothing attached to it. When I attached the battery to the charger, it remained solid green. How do these chargers typically operate - Does solid green means the battery is fully charged? Does the LED on these chargers blink or turn red they're charging or something else is going on?
    They usually go RED if the battery isn't fully charged, and changes to green when it's done.

  15. #15
    mtbr member
    Reputation:
    Join Date
    Nov 2012
    Posts
    979
    I always plug the battery into the charger and then plug it into the wall. If it's not charged fully, then the led turns red.

    That thing does look tiny. I just ordered a solarstorm x2 xm-l2 today, but this might be better. Looks pretty spotty? How would you rate the brightness, is it brighter than a single xml? How are the modes arranged? Are flash and off part of the rotation?

  16. #16
    mtbr member
    Reputation: Gharddog03's Avatar
    Join Date
    Sep 2013
    Posts
    343
    Zuuds-

    Light looks sweet. You think you can take some pics outside?

  17. #17
    mtbr member
    Reputation: zuuds's Avatar
    Join Date
    Jan 2004
    Posts
    447
    Quote Originally Posted by fightnut View Post
    They usually go RED if the battery isn't fully charged, and changes to green when it's done.
    Quote Originally Posted by varider View Post
    I always plug the battery into the charger and then plug it into the wall. If it's not charged fully, then the led turns red.

    That thing does look tiny. I just ordered a solarstorm x2 xm-l2 today, but this might be better. Looks pretty spotty? How would you rate the brightness, is it brighter than a single xml? How are the modes arranged? Are flash and off part of the rotation?
    Thanks for the charger info. I put a voltmeter to the pack and it read 10.67 volts, so maybe it isn't low enough to make the LED turn red.

    I have actually never seen a single XML light in person, so I couldn't tell you if it's brighter. All I can say is it's a hell of a lot brighter than my little single AA powered XP-G2 Fenix LD12 flashlight, which is the only other "real" light I own.

    I'm not sure if this would be considered a spotty or floody light, I don't have experience with any other bike lights. However, I think I'm going to call it floody. I compared the beam to my LD12, it is definitely floodier than the LD12. Unlike the LD12 there is no sharply defined hotspot and spill. I tried to take some outdoor beamshots, but my phone camera couldn't cope.



    The modes are low-mid-hi-off (short presses). No mode memory, it always starts on low. Strobe is accessed via a long press when the light is already on, so it's not there when you're just cycling thru modes regularly. You have to deliberately enter strobe, which is good.

    The battery pouch is a shiny, faux-cordura material, and the stitching on the velcro is already falling apart after a few test mounts. For $50 I'm not going to complain though, the light itself seems well built.
    Last edited by zuuds; 10-01-2013 at 09:29 AM.

  18. #18
    mtbr member
    Reputation:
    Join Date
    Nov 2012
    Posts
    979
    Thanks for the info zuuds! That UI sounds pretty good.

    I don't know what's going on with that battery. I thought that it came with a 2s2p battery which would have a maximum voltage of 8.4V. Since you are measuring 10.67V this must be wired differently, maybe 3s1p or 4s1p. That would make it incompatible with all my other stuff.

  19. #19
    mtbr member
    Reputation: zuuds's Avatar
    Join Date
    Jan 2004
    Posts
    447
    Quote Originally Posted by varider View Post
    Thanks for the info zuuds! That UI sounds pretty good.

    I don't know what's going on with that battery. I thought that it came with a 2s2p battery which would have a maximum voltage of 8.4V. Since you are measuring 10.67V this must be wired differently, maybe 3s1p or 4s1p. That would make it incompatible with all my other stuff.
    I don't understand the battery voltage either - according to the item description on Fasttech, it comes with a 4x18650 / 4400mAh / 2SP pack. I'm no battery expert but It's a standard looking square shrink wrapped 4x18650 pack and as far as I can tell there are 4 cells in it.

  20. #20
    mtbr member
    Reputation:
    Join Date
    Nov 2012
    Posts
    979
    Quote Originally Posted by zuuds View Post
    I don't understand the battery voltage either - according to the item description on Fasttech, it comes with a 4x18650 / 4400mAh / 2SP pack. I'm no battery expert but It's a standard looking square shrink wrapped 4x18650 pack and as far as I can tell there are 4 cells in it.
    I've seen a picture that someone posted, where one of the batteries was replaced with a plastic tube and then shrinkwrapped. It could be that you only have three batteries wired in series.

  21. #21
    mtbr member
    Reputation:
    Join Date
    Mar 2009
    Posts
    133
    3 days ago I received a message from Fasttech, and they are currently out of stock.

  22. #22
    mtbr member
    Reputation: zuuds's Avatar
    Join Date
    Jan 2004
    Posts
    447
    Quote Originally Posted by varider View Post
    I've seen a picture that someone posted, where one of the batteries was replaced with a plastic tube and then shrinkwrapped. It could be that you only have three batteries wired in series.
    Yikes! I heard that Chinese batteries are sketchy... but I didn't realize they were that sketchy!

  23. #23
    mtbr member
    Reputation: zuuds's Avatar
    Join Date
    Jan 2004
    Posts
    447

    never mind!

    Quote Originally Posted by zuuds View Post
    Yikes! I heard that Chinese batteries are sketchy... but I didn't realize they were that sketchy!
    I was scratching my head about this, and just for the heck of it connected my voltmeter to a AA battery - it read 2.2 volts. It then told me a 9V battery was 12 volts. After replacing the battery in my voltmeter, it's now giving accurate readings. The "duo" battery pack is at 7.39 volts, not 10.67!

  24. #24
    mtbr member
    Reputation:
    Join Date
    Sep 2012
    Posts
    58
    Depends on how the battery is being measured. Each individual battery would be charged to 4.2v when fully charged, so when fully charged you should get a reading of 16.8v. When wired 2s2p the driver restricts the voltage to 8.4v, this is output only. Zuuds can you clarify how you are measuring the voltage?

  25. #25
    mtbr member
    Reputation:
    Join Date
    Nov 2012
    Posts
    979
    Quote Originally Posted by zuuds View Post
    I was scratching my head about this, and just for the heck of it connected my voltmeter to a AA battery - it read 2.2 volts. It then told me a 9V battery was 12 volts. After replacing the battery in my voltmeter, it's now giving accurate readings. The "duo" battery pack is at 7.39 volts, not 10.67!
    Haha, mystery solved!

  26. #26
    mtbr member
    Reputation: zuuds's Avatar
    Join Date
    Jan 2004
    Posts
    447
    Quote Originally Posted by whokilledJR View Post
    Depends on how the battery is being measured. Each individual battery would be charged to 4.2v when fully charged, so when fully charged you should get a reading of 16.8v. When wired 2s2p the driver restricts the voltage to 8.4v, this is output only. Zuuds can you clarify how you are measuring the voltage?
    I'm placing the negative probe on the metal edge of the cylinder part of the battery lead , and the positive probe on the post part in the middle. Is that the right way to do it?

    I'm not even sure my charger works. (See post 11 above). All it ever shows is solid green when it's plugged in -- whether or not the battery is connected to it. I tried connecting the battery to it before plugging it in, but it still does the same thing.

    If the charger LED is supposed to display red at less than full charge, and it is green when my battery is at 7.4 (out of 16.8) volts, I don't think it's working. I plugged the charger into the wall and put the voltmeter to it (black probe to the outside cylinder, red probe into the center hole) - shows 0 volts. Shouldn't it show 8.4v? (the sticker on the charger says the output is 8.4v, 1000 ma.)

    I guess I can put the battery on the charger tonight and see if the battery shows higher voltage tomorrow.

  27. #27
    mtbr member
    Reputation:
    Join Date
    Aug 2013
    Posts
    806
    Yes, your multimeter connection is correct. Based on your description of problem, I'd say that charger is broken.

  28. #28
    mtbr member
    Reputation:
    Join Date
    Mar 2009
    Posts
    133
    If you stick the probe in the connector, you can make short circuit and damage the battery, charger etc.

  29. #29
    mtbr member
    Reputation:
    Join Date
    Sep 2012
    Posts
    58
    Quote Originally Posted by zuuds View Post
    I was scratching my head about this, and just for the heck of it connected my voltmeter to a AA battery - it read 2.2 volts. It then told me a 9V battery was 12 volts. After replacing the battery in my voltmeter, it's now giving accurate readings. The "duo" battery pack is at 7.39 volts, not 10.67!
    I missed this post. 7.39v sounds more reasonable, although not fully charged, it would be 8.4v fully charged. As Archie mentioned your charger is playing up if this reading is correct, which is not a good thing when dealing with Li-ion batteries.

    Even if the light is green a lot of chargers still trickle charge at a very slow rate near the end of recharging, although 7.4v is too low for it to start doing this. Have you tried charging it over a period of time and re-checking the voltage to see if it's still charging? I'd err on the side of caution, i.e don't leave it charging unattended over night.

    Based on some of your readings it could just be the voltmeter is still not giving accurate figures.

  30. #30
    Kir
    Kir is offline
    mtbr member
    Reputation:
    Join Date
    May 2013
    Posts
    165
    Quote Originally Posted by bhocewar View Post
    If you stick the probe in the connector, you can make short circuit and damage the battery, charger etc.
    Charger - maybe, but its kinda hard to short circuit male plug. Much easier to do that with female plug on battery, but you won't damage anything in battery - all bike lights batteries have protection pcbs in them that will disconnect cells if you'll short circuit connector.

  31. #31
    mtbr member
    Reputation: zuuds's Avatar
    Join Date
    Jan 2004
    Posts
    447
    Quote Originally Posted by Kir View Post
    Charger - maybe, but its kinda hard to short circuit male plug. Much easier to do that with female plug on battery, but you won't damage anything in battery - all bike lights batteries have protection pcbs in them that will disconnect cells if you'll short circuit connector.
    Good to know. I stuck the probes in in veeeerrrry carefully, a la Name:  operation.jpg
Views: 2748
Size:  50.0 KB

  32. #32
    mtbr member
    Reputation: zuuds's Avatar
    Join Date
    Jan 2004
    Posts
    447
    Quote Originally Posted by whokilledJR View Post
    I missed this post. 7.39v sounds more reasonable, although not fully charged, it would be 8.4v fully charged. As Archie mentioned your charger is playing up if this reading is correct, which is not a good thing when dealing with Li-ion batteries.

    Even if the light is green a lot of chargers still trickle charge at a very slow rate near the end of recharging, although 7.4v is too low for it to start doing this. Have you tried charging it over a period of time and re-checking the voltage to see if it's still charging? I'd err on the side of caution, i.e don't leave it charging unattended over night.

    Based on some of your readings it could just be the voltmeter is still not giving accurate figures.
    I threw caution to the wind and left it on the charger all night. This morning it read exactly .... 7.39v. The charger must be bunk. I ordered a Magicshine charger from Action LED Lights.

    I think my voltmeter is giving accurate readings now that I installed a new battery. I tested it on AA and 9v batteries and it's giving correct readings.

  33. #33
    mtbr member
    Reputation:
    Join Date
    Apr 2007
    Posts
    182
    Just got mine, shipped on the 15th of Sept.

    First thing I did was removed the mount and installed a quick release one.

    Rubber mounts are ok if they came with a tab but this one did not.

    Gemini Duo clones-imag0041.jpg

    Gemini Duo clones-imag0044.jpg


    Very very small and lightweight.

    I'd buy another head only for a headlamp if they sold head only.

  34. #34
    mtbr member
    Reputation:
    Join Date
    Apr 2007
    Posts
    182
    I went for an hour ride with it, bright, but floody, almost no spot. It's a shame because the body is perfect for a helmet/headlamp mount.

    Wonder if you can swap the optics to spot.

  35. #35
    mtbr member
    Reputation: Gharddog03's Avatar
    Join Date
    Sep 2013
    Posts
    343
    Quote Originally Posted by mrbubbles View Post
    I went for an hour ride with it, bright, but floody, almost no spot. It's a shame because the body is perfect for a helmet/headlamp mount.

    Wonder if you can swap the optics to spot.
    Any night pictures?

  36. #36
    mtbr member
    Reputation:
    Join Date
    Apr 2007
    Posts
    182
    Quote Originally Posted by Gharddog03 View Post
    Any night pictures?
    Nope. My night time camera skillz are next to nothing. I'll try to figure out my dslr over the weekend and take some pics. Stay tuned.

  37. #37
    mtbr member
    Reputation:
    Join Date
    Mar 2009
    Posts
    133
    Quote Originally Posted by mrbubbles View Post

    Wonder if you can swap the optics to spot.
    Allmost positive you can do that. Just pop it out, measure the lens and choose the right one.

  38. #38
    mtbr member
    Reputation:
    Join Date
    Aug 2013
    Posts
    806
    Quote Originally Posted by Kir View Post
    you won't damage anything in battery - all bike lights batteries have protection pcbs in them that will disconnect cells if you'll short circuit connector.
    It should be so, but in reality not always safe. I myself burned PCB on early MagicShine battery by accidental shortage, so I'd recommend to avoid "testing" it that way...

  39. #39
    mtbr member
    Reputation:
    Join Date
    Aug 2013
    Posts
    806
    Quote Originally Posted by mrbubbles View Post
    Rubber mounts are ok if they came with a tab but this one did not.
    For what it's worth, you can buy tabbed O-rings separately.

  40. #40
    mtbr member
    Reputation:
    Join Date
    Apr 2007
    Posts
    182
    Quote Originally Posted by -Archie- View Post
    It should be so, but in reality not always safe. I myself burned PCB on early MagicShine battery by accidental shortage, so I'd recommend to avoid "testing" it that way...
    On the flip side, the $30 magic shine clone I had had no overvoltage protection, I plugged in a 8.4v fully charged battery and it fried the circuit board.

    Quote Originally Posted by -Archie- View Post
    For what it's worth, you can buy tabbed O-rings separately.
    I did look for them, cheapest I found was $6 on ebay, pricey considering that you can buy solarstorm x2 light only with tabbed o rings for $20.

  41. #41
    mtbr member
    Reputation:
    Join Date
    Aug 2013
    Posts
    806
    Quote Originally Posted by mrbubbles View Post
    I did look for them, cheapest I found was $6 on ebay, pricey considering that you can buy solarstorm x2 light only with tabbed o rings for $20.
    Cheap Silicone O-Ring Seal Mounting Band for SKU 29489/30864 (2-Pack)

  42. #42
    mtbr member
    Reputation:
    Join Date
    Sep 2013
    Posts
    5

    Sv: Gemini Duo clones

    Quote Originally Posted by mrbubbles View Post
    Just got mine, shipped on the 15th of Sept.

    First thing I did was removed the mount and installed a quick release one.

    Rubber mounts are ok if they came with a tab but this one did not.

    Click image for larger version. 

Name:	IMAG0041.jpg 
Views:	515 
Size:	59.1 KB 
ID:	836371

    Click image for larger version. 

Name:	IMAG0044.jpg 
Views:	661 
Size:	69.1 KB 
ID:	836372


    Very very small and lightweight.

    I'd buy another head only for a headlamp if they sold head only.
    Where did you buy the quick release mount?

    Skickat från min GT-I9300 med Tapatalk 4

  43. #43
    mtbr member
    Reputation:
    Join Date
    Apr 2007
    Posts
    182
    That's more reasonable. I still prefer quick release though.

    Quote Originally Posted by Bollis View Post
    Where did you buy the quick release mount?

    Skickat från min GT-I9300 med Tapatalk 4
    I got a bunch of them rummaging through my local bike co-op.

    But you can buy them.

    Quick-Cam Adjustable Bracket

    Locally folks can buy them from here.

    Planet Bike Quick Cam Handlebar Bracket - Mountain Equipment Co-op. Free Shipping Available

    I wouldn't wholly recommend these mounts if I had to buy them, it's quite a bit of work, you have to drill a hole in the center, and the allen screw to mount the light takes some dexterity to put on because of the tight spaces.

    But once you assembled everything, it's a great mount, very adjustable for different handlebar diameters, and much easier to take off than o rings.

    These mounts are actually my preferred mounts for flashlights because they can fit many different flashlight diameters, even 26650 flashlights.



    And for different handlebar sizes.


  44. #44
    mtbr member
    Reputation:
    Join Date
    Apr 2007
    Posts
    182
    I didn't think it was possible but the light beam burned my table sheet fabric.


    Somebody need to explain this scientifically.

    Gemini Duo clones-imag0045.jpg

  45. #45
    mtbr member
    Reputation:
    Join Date
    Aug 2013
    Posts
    806
    What namely surprises you? Yes, beside of visible spectrum, powerful light emits huge amount of heat as well; you can feel it by putting your hand in front of working light...

  46. #46
    mtbr member
    Reputation: Cat-man-do's Avatar
    Join Date
    May 2004
    Posts
    5,322
    Quote Originally Posted by mrbubbles View Post
    I didn't think it was possible but the light beam burned my table sheet fabric.


    Somebody need to explain this scientifically.

    Click image for larger version. 

Name:	IMAG0045.jpg 
Views:	337 
Size:	91.8 KB 
ID:	836400
    The fabric is likely sensitive to heat. LED's ( class II ) can produce a good bit of heat.

  47. #47
    mtbr member
    Reputation:
    Join Date
    Sep 2008
    Posts
    237
    Currently waiting (VERY) impatiently for mine to arrive, ordered on the 18th Sept and was shipped on the 20th Sept, I know it was only 2 weeks ago but still...

    Anyway... Good to hear initial favourable reports on the light unit. I had the fortune to have a quick play with a Gemini Duo at the Bike Show at the NEC last weekend, and can confirm it was really rather good. So if this is anywhere near as good, for 1/5th of the price I will be ecstatic! :-)

  48. #48
    mtbr member
    Reputation:
    Join Date
    Jul 2007
    Posts
    1,106
    I ordered mine from FastTech on 9/12 and I'm STILL waiting for it! I e-mailed them and they said it was held up in "x-ray scan for many days".

    Anyway, regarding MrBubbles comment that it's very floody. I wonder if a reflector could be put on one side (assuming the right size exists), for a mix of spot and flood?

  49. #49
    mtbr member
    Reputation:
    Join Date
    Nov 2009
    Posts
    36
    Quote Originally Posted by mrbubbles View Post
    On the flip side, the $30 magic shine clone I had had no overvoltage protection, I plugged in a 8.4v fully charged battery and it fried the circuit board.
    Did the same, is there a repair for this?

  50. #50
    mtbr member
    Reputation:
    Join Date
    Apr 2007
    Posts
    182
    Quote Originally Posted by Sk8r View Post
    Did the same, is there a repair for this?
    There is, replace the driver.

  51. #51
    mtbr member
    Reputation:
    Join Date
    Nov 2009
    Posts
    36
    Quote Originally Posted by mrbubbles View Post
    There is, replace the driver.
    Any threads on how to replace the driver and/or where to buy? Searched "How to replace driver" but I keep getting hits on bad drivers in bike lanes :6

  52. #52
    mtbr member
    Reputation:
    Join Date
    May 2005
    Posts
    3,193
    Quote Originally Posted by Sk8r View Post
    Any threads on how to replace the driver and/or where to buy
    Post over in the DIY light forum. There may be more help there.

    PM me if interested in a repair. I've built lights for myself and a few others for the past 4 years and have repaired a couple Magicshines. The only difficulty is finding a suitable replacement driver from DX or Kaidomain and then waiting 3-4 weeks for it to arrive. If you understand basic electricity and can solder reasonably well, replacing a driver is easy.

  53. #53
    mtbr member
    Reputation: Cat-man-do's Avatar
    Join Date
    May 2004
    Posts
    5,322
    Quote Originally Posted by Sk8r View Post
    Any threads on how to replace the driver and/or where to buy? Searched "How to replace driver" but I keep getting hits on bad drivers in bike lanes :6
    Actually, you can buy drivers almost anywhere. When it comes they even include the lamp head with the driver already installed. Cost about $25-$30. Your choice in the type of lamp head. Hard to beat that deal.


  54. #54
    mtbr member
    Reputation:
    Join Date
    Aug 2013
    Posts
    806
    Well said!

  55. #55

  56. #56
    mtbr member
    Reputation:
    Join Date
    May 2005
    Posts
    3,193
    Quote Originally Posted by Cat-man-do View Post
    Actually, you can buy drivers almost anywhere. When it comes they even include the lamp head with the driver already installed. Cost about $25-$30. Your choice in the type of lamp head. Hard to beat that deal.

    Yup, new heads are so cheap that repair is certainly not an profitable thing to do. Could argue that it is the right thing to do.

    I still stand by my belief that one should open these cheapo lamps and check them over for proper assembly, soldering, etc. and fix all defects before trusting your night ride to one. Not doing so is a little like buying a new bike that you know was spec'd with the cheapest of components, welded and assembled by someone with little skill and no care as to the product, (but has a nice looking paint job) then heading out on a gonzo ride with no further inspection. Run two systems and maybe even carry a torch for backup.

    That's what I mean by difficult. How does the newb user/repairer decide which one is correct or usable? Wading through the various specs and features is bad enough and then once you get what you thought you ordered it does not work as described. The last batch of DX drivers I bought spec'd the drive current at 1.25A. They actually only deliver .7A.
    Last edited by Vancbiker; 10-08-2013 at 10:09 AM. Reason: Clarity of statement

  57. #57
    mtbr member
    Reputation:
    Join Date
    Aug 2013
    Posts
    806
    Quote Originally Posted by Vancbiker View Post
    I still stand by my belief that one should open these cheapo lamps and check them over for proper assembly, soldering, etc. and fix all defects before trusting your night ride to one.
    Absolutely. This is what I'm always doing myself, and recommend to others. Vast majority of problems can be eliminated by preliminary inspection & minor repair: most lights are working flawlessly for quite long time then...

  58. #58
    mtbr member
    Reputation:
    Join Date
    Jul 2007
    Posts
    1,106
    Mine FINALLY arrived, and although I haven't even turned it on yet (charging battery), I had to post about how small this thing is!

    When I opened the case it comes in, I removed the head strap which was covering everything up, I saw the battery and the charger, and then I saw a little bag. When I pulled the bag out of the case, I had a sinking feeling that they had sent me the wrong thing. The bag and the object in it were surely way too small to be my dual light. Nope, it's that small!
    Pictures don't do it justice.
    I'll post my impressions of it after I get to use it.

  59. #59
    Kir
    Kir is offline
    mtbr member
    Reputation:
    Join Date
    May 2013
    Posts
    165
    Got mine too, first impression - so small! Will make a perfect helmet light imo.

  60. #60
    mtbr member
    Reputation:
    Join Date
    Jul 2007
    Posts
    1,106
    The lighthead with cable is 60 grams.

    I took some pics with my phone (iPhone 4s), but can't seem to figure out how to load them. If anyone wants to pm me instructions so as not to take this thread off topic, I'd appreciate it.

  61. #61
    mtbr member
    Reputation:
    Join Date
    Jul 2007
    Posts
    1,106
    Gemini Duo clones-gemini-duo-clone.jpg

  62. #62
    mtbr member
    Reputation:
    Join Date
    Jul 2007
    Posts
    1,106
    Gemini Duo clones-securedownload.jpg

  63. #63
    mtbr member
    Reputation:
    Join Date
    Jul 2007
    Posts
    1,106
    Sorry for the separate posts for the pics. I haven't uploaded pics in a long time, and I'm relearning it (we get spoiled loading pics from our phones to Facebook). I'll get better at it.

    By the way, the light from this is very clean white. I thought my triple xml (in photo) was pretty white, but this thing makes the beam on that one look slightly yellowish.

    Gemini Duo clones-gemini-duo-clone-3.jpg

  64. #64
    mtbr member
    Reputation:
    Join Date
    Nov 2010
    Posts
    27
    Quote Originally Posted by fightnut View Post
    Sorry for the separate posts for the pics. I haven't uploaded pics in a long time, and I'm relearning it (we get spoiled loading pics from our phones to Facebook). I'll get better at it.

    By the way, the light from this is very clean white. I thought my triple xml (in photo) was pretty white, but this thing makes the beam on that one look slightly yellowish.
    please some beamshots =)

  65. #65
    mtbr member
    Reputation:
    Join Date
    Nov 2012
    Posts
    979
    That's amazingly small. Now the million dollar question is how bright is it?

  66. #66
    mtbr member
    Reputation: znomit's Avatar
    Join Date
    Dec 2007
    Posts
    1,877
    Ordered one. Might throw XPGs into it if the beam is too wide.

  67. #67
    mtbr member
    Reputation: Gharddog03's Avatar
    Join Date
    Sep 2013
    Posts
    343
    Looks just like my gemini duo for half the price

  68. #68
    mtbr member
    Reputation:
    Join Date
    Apr 2007
    Posts
    182
    Quote Originally Posted by znomit View Post
    Ordered one. Might throw XPGs into it if the beam is too wide.
    The beam is wide. Much much wider than carclo spot 20mm triple on an xpg triple.

    Someone needs to rip this light open and experiment with different spot optics.

  69. #69
    mtbr member
    Reputation: znomit's Avatar
    Join Date
    Dec 2007
    Posts
    1,877
    Quote Originally Posted by mrbubbles View Post
    Someone needs to rip this light open and experiment with different spot optics.
    I nominate you.

  70. #70
    mtbr member
    Reputation:
    Join Date
    Nov 2010
    Posts
    27
    Someone needs disassemble to measure optics and take pictures

  71. #71
    mtbr member
    Reputation: Cat-man-do's Avatar
    Join Date
    May 2004
    Posts
    5,322
    Quote Originally Posted by fightnut View Post
    Click image for larger version. 

Name:	securedownload.jpg 
Views:	265 
Size:	142.1 KB 
ID:	838488
    So fight, Which one did you buy, the one with XML U2s' or XM-L2's? How does the output compare with your tri-clone lamp? Where did you order from and how long did it take to get to you? Nice to hear that the beam tint is very white. That alone makes these worth buying. I just hope they hold up after using for some time ( without doing any mods ).

  72. #72
    mtbr member
    Reputation:
    Join Date
    May 2005
    Posts
    3,193
    Quote Originally Posted by mrbubbles View Post
    The beam is wide. Much much wider than carclo spot 20mm triple on an xpg triple.
    Wow, that Carclo is already a pretty floody beam. Hard to believe this is even wider.

  73. #73
    mtbr member
    Reputation:
    Join Date
    Apr 2007
    Posts
    182
    I disassembled them.

    Leds.
    Gemini Duo clones-dsc_0212.jpg

    The measurements.
    Gemini Duo clones-dsc_0209.jpg
    Gemini Duo clones-dsc_0210.jpg


    From left to right, stock yinding lens, dx cree xr-e 8° lens, and carclo 20mm 15° lens for xr-e. That's all the spare lens I have on hand that fits.

    Gemini Duo clones-dsc_0216.jpg

    The latter two lens are floodier than the stock yinding lens.

  74. #74
    mtbr member
    Reputation: znomit's Avatar
    Join Date
    Dec 2007
    Posts
    1,877
    Quote Originally Posted by mrbubbles View Post
    I disassembled them.
    Thanks!!!

    How much room is there around the driver?
    I'd like to put a taskled Lflex in there.
    Board is 0.780" in diameter (<20mm). Maximum thickness 0.120".
    LFlex Product Information

  75. #75
    mtbr member
    Reputation:
    Join Date
    Aug 2007
    Posts
    149
    Anyone found light only version anywhere?

  76. #76

  77. #77
    mtbr member
    Reputation:
    Join Date
    Jul 2007
    Posts
    1,106
    Quote Originally Posted by Cat-man-do View Post
    So fight, Which one did you buy, the one with XML U2s' or XM-L2's? How does the output compare with your tri-clone lamp? Where did you order from and how long did it take to get to you? Nice to hear that the beam tint is very white. That alone makes these worth buying. I just hope they hold up after using for some time ( without doing any mods ).
    I got the one from FastTech with the XML- U2's. Mine took almost a full month, but they said it got held up in "x-ray scan". Another guy on here had his in like two weeks from FastTech.

    I did find it on Wallbuys for a couple dollars less ($48.39), but I've never dealt with them.

    I haven't had it on the trail yet, but on the wall I'd say the tri-clone on medium (2 leds) seems slightly brighter, but I think that is just because of the more focused hot spot.
    I really don't like to say too much until I have it on the trail, because I've commented on brightness and beam patterns before after shining them on the wall inside, and then had a very different opinion of them after I get them on a dark tree lined trail.

    It is definitely a more evenly spread, floody type light. For that reason it will probably go on my bars.
    I'd love to have the same exact light with either "spot" optics, or just OP textured reflectors to put on my helmet.
    I think that would be the perfect combo!

  78. #78
    Moderator Moderator
    Reputation: 2melow's Avatar
    Join Date
    Jan 2004
    Posts
    2,677
    Quote Originally Posted by bad andy View Post

    Those who have ordered please let us know!
    OK, I bought this with hopes of giving to my son who has shown an interest in night riding. I think he will get the Magicshine!

    I purchased from here Free shipping 1Set CREE XML2 T6 3B Bike Light 1600lm Waterproof Bicycle Light LED HeadLamp + 8.4v Battery Pack + Charger-in Bicycle Light from Sports & Entertainment on Aliexpress.com but the price seems to have gone up $31 in the last three weeks. Order from Fast Tech for the better deal. Total transit time was about 18 days.

    My camera (Canon S95 auto focus) is being weird so here is in the order:

    First Pic are the lamp heads.

    Second pic is the test shot - cone on top of fire pit is 88 feet from lights. Fire pit to cones is 25 feet, last cone to lights is 13 feet.

    Third pic is original magicshine on high.

    Fourth pic is Yinding clone on high.
    Attached Thumbnails Attached Thumbnails Gemini Duo clones-1lightsimg_6056.jpg  

    Gemini Duo clones-1testimg_6057.jpg  

    Gemini Duo clones-1oldlightimg_6050.jpg  

    Gemini Duo clones-1newlightimg_6055.jpg  

    Front Range Forum Moderator

  79. #79
    mtbr member
    Reputation: Gharddog03's Avatar
    Join Date
    Sep 2013
    Posts
    343
    Wow. Yinding is very impressive. Thanks for the pics.

  80. #80
    mtbr member
    Reputation:
    Join Date
    Apr 2007
    Posts
    182
    Quote Originally Posted by znomit View Post
    Thanks!!!

    How much room is there around the driver?
    I'd like to put a taskled Lflex in there.
    Board is 0.780" in diameter (<20mm). Maximum thickness 0.120".
    LFlex Product Information
    Might not have enough room.

    The inside.
    Gemini Duo clones-dsc_0215.jpg


    The circuit.
    Gemini Duo clones-dsc_0218.jpg

    The inside diameter.
    Gemini Duo clones-dsc_0220.jpg

    All the parts disassembled.
    Gemini Duo clones-dsc_0221.jpg


    Overall, it's a very simple straight forward design, folks should've thought of this about 5 years ago, it's not like cnc machines weren't available back then.

  81. #81
    mtbr member
    Reputation:
    Join Date
    May 2005
    Posts
    3,193
    Quote Originally Posted by mrbubbles View Post
    folks should've thought of this about 5 years ago
    Did, then decided to go smaller, lighter.

    For the money those are a great start on a light set though. Pretty clean looking construction. Is the surface the LEDs attach to pressed into the housing or integral to the housing? Can't tell from the pics what it has for strain relief/sealing on the cable entry. How is the sealing on the front and back covers and the sealing on the screws that hold the front and back on?

  82. #82
    mtbr member
    Reputation:
    Join Date
    Apr 2007
    Posts
    182
    Quote Originally Posted by Vancbiker View Post
    Is the surface the LEDs attach to pressed into the housing or integral to the housing? Can't tell from the pics what it has for strain relief/sealing on the cable entry. How is the sealing on the front and back covers and the sealing on the screws that hold the front and back on?
    The mid metal surface is integral to the housing, the heat transfer is very good.

    Similar design to the easy2led housing where the entire piece is machined out.




    No strain relief for the cables inside the housing, there is a strain relief for the power cable to the circuit board.

    There are silicone rings for the front and back housing plate assemblies, the lens though are "sealed" by a really thin piece of silicone.

    It passes for water resistant, but NOT waterproof.

  83. #83
    mtbr member
    Reputation:
    Join Date
    Apr 2007
    Posts
    182
    There is thermal paste between the led and housing. This light piece requires no after delivery diy/qc to get it up and running.

  84. #84
    mtbr member
    Reputation:
    Join Date
    May 2005
    Posts
    3,193
    That's much nicer than a pressed in LED mounting surface. Likely a bit of sealant in the areas that look iffy and you could be nicely waterproof.

  85. #85
    mtbr member
    Reputation:
    Join Date
    Aug 2013
    Posts
    806
    Quote Originally Posted by mrbubbles View Post
    Overall, it's a very simple straight forward design
    Many thanks for posting the pics and review! Seems that the light is well-designed indeed...

  86. #86
    mtbr member
    Reputation:
    Join Date
    Oct 2013
    Posts
    5
    Hey Guys,

    after the recommandation of leuchte81 for this lamp, I also got my first bike light.
    I'm really happy with this light and think the value for money is really good.
    Mine also took over 1 month for the delivery.

    Now after some tests I have some questions and hope you might give me some hints what to do:

    - When should I recharge the batteries? When the on/off button turns red, or should I fully empty the batteries?
    - How long does it need to recharge? Can I trust the recharger lamp?
    - Which batteries and case should I buy to improve the duration?

    Thanks for you help!

  87. #87
    mtbr member
    Reputation:
    Join Date
    Nov 2010
    Posts
    27
    Quote Originally Posted by mrbubbles View Post
    Might not have enough room.
    You can cut off 0.8mm and install. I think fit the size

  88. #88
    mtbr member
    Reputation:
    Join Date
    Mar 2009
    Posts
    133
    Great pics from Mrbubbles for detailed view and 2melow for comparison between the old MS P7 and Gemini clone.
    Yinding beam looks almost perfect. I am also waiting for Yinding from DX, but it seems it somehow stuck at the Beijing airport.
    It will be the main lamp, and my current old MS P7 will become backup. So those beamshots are great reference for me.

    @2melow: Can you check if you really have T6 3B bin? and
    can someone measure the current on high on batteries/LEDs/driver ?

  89. #89
    mtbr member
    Reputation:
    Join Date
    Jul 2013
    Posts
    59
    Hi all! Thanks for all the effort you have put into sharing your experience with this light. Today I ordered 3 of them, one to myself and the other to some of my friends.

    I was thinking that a extra batteri pack could be nice, but could not find any on the Fasttech website - can you point me in a direction for a good, not to expensive batteri pack? :-)

  90. #90
    mtbr member
    Reputation: Gharddog03's Avatar
    Join Date
    Sep 2013
    Posts
    343
    Quote Originally Posted by Pr3dator View Post
    Hi all! Thanks for all the effort you have put into sharing your experience with this light. Today I ordered 3 of them, one to myself and the other to some of my friends.

    I was thinking that a extra batteri pack could be nice, but could not find any on the Fasttech website - can you point me in a direction for a good, not to expensive batteri pack? :-)
    Panasonic, Samsung, Sanyo, or Bak should fit the bill. 30$-60$. I get my lighting gear through Jim [Action Leds] but this battery on amazon looks pretty good which is agressively priced at under 20$
    Replacement 8.4V 6600mAh Rechargeable Battery Pack for Headlamp & Bicycle Light:Amazon:Sports & Outdoors

  91. #91
    mtbr member
    Reputation:
    Join Date
    Jul 2013
    Posts
    59
    About the packages being stuck in China, that I read several people mentioning. There have been 7 days holiday in China where everything has been standing still - that is probably the reason for the delay that we still are suffering from.

  92. #92
    mtbr member
    Reputation:
    Join Date
    Nov 2005
    Posts
    897
    Quote Originally Posted by mrbubbles View Post
    Might not have enough room.

    The inside.
    The circuit.
    The inside diameter.
    All the parts disassembled.
    Overall, it's a very simple straight forward design, folks should've thought of this about 5 years ago, it's not like cnc machines weren't available back then.
    Is this the fast tech light? Did you find screws under the rubber on the mount? I want to purchase one of these, but hate the rubber band mounting mechanism and was hoping I could purchase a cat eye mount or something to hook it on. Thanks for any info.

  93. #93
    mtbr member
    Reputation:
    Join Date
    Nov 2005
    Posts
    897
    Quote Originally Posted by Pr3dator View Post
    About the packages being stuck in China, that I read several people mentioning. There have been 7 days holiday in China where everything has been standing still - that is probably the reason for the delay that we still are suffering from.
    I ordered from someone on aliexpress which was a bad idea, it was 40 days ago and never shipped. It just said "status opening" for a month. I opened a dispute. I am thinking about buying from fast tech now.

  94. #94
    mtbr member
    Reputation:
    Join Date
    Apr 2007
    Posts
    182
    Quote Originally Posted by sxotty View Post
    I ordered from someone on aliexpress which was a bad idea, it was 40 days ago and never shipped. It just said "status opening" for a month. I opened a dispute. I am thinking about buying from fast tech now.
    I bought mine from aliexpress. So it depends on the seller.

    Quote Originally Posted by sxotty View Post
    Is this the fast tech light? Did you find screws under the rubber on the mount? I want to purchase one of these, but hate the rubber band mounting mechanism and was hoping I could purchase a cat eye mount or something to hook it on. Thanks for any info.
    This light is the same as the fasttech version. It's a 4mm hex screw, much better than those screws for plastic housing.

  95. #95
    mtbr member
    Reputation:
    Join Date
    Nov 2005
    Posts
    897
    Sweet bubbles thanks for the information man!

  96. #96
    mtbr member
    Reputation:
    Join Date
    May 2011
    Posts
    321
    Quote Originally Posted by mrbubbles View Post
    Might not have enough room.
    Quote Originally Posted by artemha View Post
    You can cut off 0.8mm and install. I think fit the size
    Whereabouts would you propose cutting 0.8 mm from an Lflex ?

  97. #97
    mtbr member
    Reputation:
    Join Date
    May 2011
    Posts
    321
    Quote Originally Posted by bhocewar View Post
    @2melow: Can you check if you really have T6 3B bin?
    While your eyes will tell you if the tint is in the ball park, AFAIK there is no way of telling whether the bin is T6 or anything else

  98. #98
    Moderator Moderator
    Reputation: 2melow's Avatar
    Join Date
    Jan 2004
    Posts
    2,677
    Quote Originally Posted by bhocewar View Post

    @2melow: Can you check if you really have T6 3B bin?
    I am not sure what I am looking for, apologies.
    Attached Thumbnails Attached Thumbnails Gemini Duo clones-20131015_202534.jpg  

    Front Range Forum Moderator

  99. #99
    mtbr member
    Reputation:
    Join Date
    May 2005
    Posts
    3,193
    Cree do not mark bin or tint codes on their emitters. Really all you'll be able to say is the tint is cool, neutral, or warm. Even that is pretty subjective. When I mention one of my MCE lights looking a little green on the low setting most people don't see it until I switch to a higher level where it gets more white. Without at the very least a calibrated integrating sphere and calibrated constant current power supply, you'll never know what bin you have. I very much doubt that the builders of cheap lights are really stepping up for a premium bin LED. Sure, it's not that much more expensive but at the price level lights are at now saving a dollar on LEDs is going to be very attractive to the builder. Add the fact that the consumer has no ability to tell and you have a sure thing.

  100. #100
    mtbr member
    Reputation: znomit's Avatar
    Join Date
    Dec 2007
    Posts
    1,877
    Quote Originally Posted by find_bruce View Post
    While your eyes will tell you if the tint is in the ball park, AFAIK there is no way of telling whether the bin is T6 or anything else
    Having XML-U2 written on the stars is a good indication that its anything but that

Page 1 of 8 12345 ... LastLast

Similar Threads

  1. Magicshine clones arrived!
    By klynk in forum Lights DIY - Do It Yourself
    Replies: 34
    Last Post: 05-14-2014, 07:34 PM
  2. Anyone try one of these 872 clones yet
    By Rakuman in forum Lights and Night Riding
    Replies: 20
    Last Post: 12-30-2013, 06:16 AM
  3. Gemini DUO x 2
    By jgutz71 in forum Lights and Night Riding
    Replies: 3
    Last Post: 05-02-2013, 08:27 AM
  4. magic shine 808 xml clones
    By Reelchef67 in forum Lights and Night Riding
    Replies: 1
    Last Post: 11-23-2012, 07:21 PM
  5. Gemini Duo
    By rixsurfer in forum Lights and Night Riding
    Replies: 1
    Last Post: 10-09-2012, 11:00 AM

Members who have read this thread: 5

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •