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  1. #1
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    Halogen vs LED ( 6 pix)

    Hi
    A few people have wanted a comparison between halogen and LED.
    pix are
    (1) Triple Cree P4 @ 0.75amp -Cree 20mm 8deg optics at 90ft to car
    (2) Triple Cree P4 @ 1amp -Cree 20mm 8deg optics at 90ft to car
    (3) Triple Seoul U-Bin @ 1amp -Khatod 20mm 10deg optics at 90ft to car
    (4) 50mm 24deg 20watt Halogen @ 14.8V
    (5) 50mm 10?deg 20watt Halogen @ 14.8V
    (6) 50mm 10?deg & 24deg 20watt Halogen @ 14.8V








    Just note on the first 2 pix that there IS a difference between 1amp and 0.75amp driven Crees -but very hard to spot in real life.

    The halogens used are MR16 downlights -not sure if you can get whiter color ones.
    These were great until my LED conversion

    Fullsize pix can be seen at
    http://tinyurl.com/yo5ff6

    I put them in "Picasa" -you can scroll thru them to see the difference.

    Cheers
    Dom
    Last edited by poobardog; 06-02-2007 at 02:53 AM.

  2. #2
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    Nice work mate !

    I love your housing design, are you going commercial with a few ?

    Tony

  3. #3
    Spanish biker
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    Hi, seem that the better combination are the triple seoul

    Thanks for the comparison

    Greetings - Saludos

    msxtr
    Warning!!! my english is very very bad, sorry.

    Easy DIY led light1
    Easy DIY led light2

    The Beast!!!

  4. #4
    bumble
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    Thanks, the comparo pics are very helpful.

  5. #5
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    Glad they helped a bit.
    The Seoul is nice for close work and the Cree is good for longer distance.

    Thanks Tony -was a bit of work involved in making the housings -a bit hard with my normal work. Looking at the 35mm triple optic to cut down on machining time and probably sell a few of those if it works out.
    Cheers
    Dom

  6. #6
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    I think you'll sell a bunch of those Dom. Should show them off to the major bike shops.

    Honestly awe inspiring engineering you have going there.

    How warm does the tripple Seoul light @ 1 amp get with the heatsink design you have ?

    Tony

  7. #7
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  8. #8
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    Hi Tony -Yeah,i did show them to my local bike shops -they do want some.Really want to get some anodized first though.A simple model though as a normal person wouldn't need all the extra bits.
    The Seoul and Cree both fit in the same housing with a heatsink and optic change and at rest -they are cooking within 6mins.I have to isolate the button in future models as it becomes non-functional with the heat.
    Of course you would normally have airflow over it so it shouldn't be an issue.
    Also probably best to have them run at 0.75amp as Stu and others have suggested before.

    Hi Alonfo -those shots are a good example as well -have you got a 25deg optic yet to try?

    Chers
    Dom

  9. #9
    My Rusty Knee
    Reputation: Stuart B's Avatar
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    cool comparison pics. Did you use the same white balance setting on the camerar for all pics?

    Its interesting that the greens are easier to see with the LED and the browns (which contains red) pop up with the halogen. Are halogens green defficient?

    I really need to try the red led idea outside. hopefully both greens and browns will pop out.

    Stu
    What exactly is a rigid hard tail?

  10. #10
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    Hi Stu
    I used "halogen WB" for the halogen as the normal WB made them look white as the LEDs.
    It's a fairly close color to what i really see.
    Maybe some different temp halogens would bring the green out more.

    I just now tried some red LEDs

    (1) White only
    (2) White& Red
    (3) Red only




    Think you may be onto something good there Stu
    The red really brings out the proper color on the purple flower tree at the back.
    I didn't move the position of the red LEDs
    I used a SSun triple rear tail light.

    Cheers
    Dom

  11. #11
    My Rusty Knee
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    Quote Originally Posted by poobardog
    Hi Stu
    I used "halogen WB" for the halogen as the normal WB made them look white as the LEDs.
    It's a fairly close color to what i really see.
    Maybe some different temp halogens would bring the green out more.

    I just now tried some red LEDs

    (1) White only
    (2) White& Red
    (3) Red only




    Think you may be onto something good there Stu
    The red really brings out the proper color on the purple flower tree at the back.
    I didn't move the position of the red LEDs
    I used a SSun triple rear tail light.

    Cheers
    Dom
    EXCELLENT

    looks like the red isn't as floody as the white. good results though all the same. I will have to trust you on the flowers, but i can definitly see that the fence looks like wood at the end where the red "spot" is hitting it. the brancjes of the shrun are easier to see between the leaves too.

    The first setup i will try outside is have a red in the floodiest type optic/reflector. and then maye be run another in a spot reflector of necessary. I think its better or have the red as wide as possible to reduce any "on the way to glockt" grey peripheral appearance. this worked on my indoor test so far.

    I think i will try and mount the red inbetween the whites. as funny coloured shadows can be seen if the red is offset to the whites, even when in close proximity.

    Stu
    Stu
    What exactly is a rigid hard tail?

  12. #12
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    Quote Originally Posted by poobardog

    Hi Alonfo -those shots are a good example as well -have you got a 25deg optic yet to try?

    Chers
    Dom
    I recived the 25deg yesterday from cutter. I did a quick test and it looks great and more suitable for bar light. my concern is that the light wont illuminate far enough like the 10deg optics. I will take some photos and post here in a few days.

  13. #13
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    did you try the nite rider Moab hid led/bulb light Ultra-bright metal-halide High-Intensity Discharge (HID) bulb offers high, medium and low output levels
    Three HID light output levels give you the halogen equivalent of 40 to 50 watts for up to 12 hours
    Ultra-bright white LEDs have lamp-out protection and three modes: flash, steady and S.O.S.
    Up to 720 hours burn time in LED mode; this is great for more casual situations or around the campsite
    Universal handlebar mount and multi-position helmet mount
    Enduro-style Litium Ion 12-hour battery pack fits into jersey pocket, hydration pack or mounts on frame
    Includes NR 4.5 international fast-charger



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