Page 1 of 2 12 LastLast
Results 1 to 50 of 57
  1. #1
    mtbr member
    Reputation:
    Join Date
    Jun 2010
    Posts
    136

    40T sprocket on a 1X9 system.. working awesome ;)

    if anyone wonder if a 40T/42T sprocket can work on a 9spd system..
    it does! just need a little work but it works great!
    have a look how i did it.

    Mountain biking blog

  2. #2
    RIP Friendgirl
    Reputation: Bordershy's Avatar
    Join Date
    Jan 2004
    Posts
    422
    What shifter are you using on that 10sp derailleur?
    SPD pedals are an absolute menace to the well-being of the world, and ought be banned immediately.

  3. #3
    mtbr member
    Reputation:
    Join Date
    Dec 2005
    Posts
    410
    Hint:

    You can disassemble some 8 speed cassettes - such as CS-HG31-8, replace all spacers with those from 9 speed cassette, add 40T cog and get a "native" 9 speed 11-40 cassette.

    11-32 8 speed with replaced spacers + one-up cog has 11-13-15-17-21-24-28-32-40 spacing and no breaks in the range. It works awesome.

    CS-HG41-8 also works fine.

  4. #4
    mtbr member
    Reputation:
    Join Date
    Jun 2010
    Posts
    136
    Quote Originally Posted by Bordershy View Post
    What shifter are you using on that 10sp derailleur?
    im using sram x7 9spd shifter. sram shifters works perfact with the zee derailleur.

  5. #5
    mtbr member
    Reputation:
    Join Date
    Aug 2008
    Posts
    4,688
    More details please. Is there a reason you're using a Zee derailleur? Can you post a close up pic of the cassette?

  6. #6
    mtbr member
    Reputation:
    Join Date
    Jun 2010
    Posts
    136
    Quote Originally Posted by the-one1 View Post
    More details please. Is there a reason you're using a Zee derailleur? Can you post a close up pic of the cassette?
    no specific reason, just like the zee! great derailleur.

    40T sprocket on a 1X9 system.. working awesome ;)-img_20140415_135702.jpg40T sprocket on a 1X9 system.. working awesome ;)-img_20140415_135740.jpg

  7. #7
    Butts Up Fast!
    Reputation: Stonebreaker's Avatar
    Join Date
    Oct 2009
    Posts
    419
    Any mods necessary to use a SRAM 9 speed shifter with a ZEE 10 speed derailleur?

  8. #8
    mtbr member
    Reputation:
    Join Date
    Jun 2010
    Posts
    136
    just plug and play, im using x7 works great.

  9. #9
    mtbr member
    Reputation: Fix the Spade's Avatar
    Join Date
    Aug 2008
    Posts
    2,663
    Quote Originally Posted by Stonebreaker View Post
    Any mods necessary to use a SRAM 9 speed shifter with a ZEE 10 speed derailleur?
    No, SRAM 9 speed shifters and Shimano 10 speed mechs use the same cable pull ratio, so they work together.

    I don't think either of them planned ahead for that...

  10. #10
    squish, squish in da fish
    Reputation: fishwrinkle's Avatar
    Join Date
    Jul 2012
    Posts
    1,576
    looks good, but that 5 tooth jump in the middle of your cassette doesn't bother you? it'd drive me nuts. also, what ring are you running, looks like maybe a 30t?

  11. #11
    mtbr member
    Reputation:
    Join Date
    Jun 2010
    Posts
    136
    i rarely noticed it. sometimes in low speed maybe.
    try fine tune it a little, tension or Release the cable adjuster knob.
    i run 32T up front.

  12. #12
    RIP Friendgirl
    Reputation: Bordershy's Avatar
    Join Date
    Jan 2004
    Posts
    422
    A 20T cog would make it almost perfect. I may never go 10sp if this works out.
    SPD pedals are an absolute menace to the well-being of the world, and ought be banned immediately.

  13. #13
    mtbr member
    Reputation: CarolinaPanthers's Avatar
    Join Date
    Feb 2013
    Posts
    299
    Great work, eyco! I've been wondering this myself but I never actually tried to test anything. I suppose losing the 18t was the best compromise, could you choose to lose the 16t or would that not be doable/it would be more beneficial to keep that cog?

  14. #14
    mtbr member
    Reputation:
    Join Date
    Jun 2010
    Posts
    136
    yes when i disassemble the cassette i had to chose between the 16 to the 18, i keep'd the 16 eventually cause i figured it will be more beneficial for speed or cadence then the 18.

  15. #15
    mtbr member
    Reputation: Dictatorsaurus's Avatar
    Join Date
    Sep 2009
    Posts
    2,648
    The concern is the HG-61 could gouge Al freehubs.

    Cool solution though. I might try it myself.

  16. #16
    mtbr member
    Reputation:
    Join Date
    Oct 2005
    Posts
    398
    Awesome work! Thanks for sharing

    I might have to try this as well. I have most of the parts, and wasn't stoked about switching to 10 speed.

    Was it difficult to remove the pins? Do you have any tips to share for doing this?

  17. #17
    mtbr member
    Reputation:
    Join Date
    Jun 2010
    Posts
    136
    glad it was helpful.. im also dont see the point of 10spd, 9spd is more then Enough.

    the pins got out very easily, i knock them out using a hammer and a nail, but anything similar can work.
    after you build the cassette the pins will be a little longer now, so i grind them a little and left just a tiny bit, then i hammer the top of the pin's to close them good.
    Last edited by eyco; 04-17-2014 at 09:10 AM.

  18. #18
    mtbr member
    Reputation:
    Join Date
    Oct 2005
    Posts
    398
    Thanks again...the hammer is my favourite bike tool. I think I will give it a shot.

  19. #19
    Chris Bling
    Reputation: dustyduke22's Avatar
    Join Date
    Aug 2006
    Posts
    2,304
    This is great news. Of course I just purchased a full 10 speed drivetrain in order to go 1x. Good thing I still have all my 9sp stuff stuff for a backup bike
    The obsession of wheels fused with the passion of cycling
    Affordable Custom Wheels

  20. #20
    RIP Friendgirl
    Reputation: Bordershy's Avatar
    Join Date
    Jan 2004
    Posts
    422
    This IS a great thing, but don't overlook the elephant in the room. $90-100 is a lot for one cog.
    SPD pedals are an absolute menace to the well-being of the world, and ought be banned immediately.

  21. #21
    mtbr member
    Reputation:
    Join Date
    Jun 2010
    Posts
    136
    yes it is a lot for a piece of aluminium... the new e*thirteen 40T should be around 70$..

  22. #22
    Chris Bling
    Reputation: dustyduke22's Avatar
    Join Date
    Aug 2006
    Posts
    2,304
    Quote Originally Posted by Bordershy View Post
    This IS a great thing, but don't overlook the elephant in the room. $90-100 is a lot for one cog.
    That is a small price to pay to never have to use a front derailleur again! I won't ever go back to a 2x system.
    The obsession of wheels fused with the passion of cycling
    Affordable Custom Wheels

  23. #23
    mtbr member
    Reputation: mojojojoaf's Avatar
    Join Date
    Sep 2008
    Posts
    761
    SRAM and Shimano compatibility? Say it ain't so-

    On the other hand I am definitely going to do this.

  24. #24
    mtbr member
    Reputation:
    Join Date
    Dec 2012
    Posts
    319
    No flames, please...

    What about adding it to a 7spd cassette switched to 8spd spacing?

  25. #25
    mtbr member
    Reputation:
    Join Date
    Jun 2010
    Posts
    136
    Quote Originally Posted by BATRG3 View Post
    No flames, please...

    What about adding it to a 7spd cassette switched to 8spd spacing?
    Can't answer that.... it's a try and error situation. Basically it could work with a 8 spd shifter, i dont know what gears you have on this cog. You need to see whats the jump between the lower gear to the 40t.
    But in this case its batter to move to 9 or 10 spd system

  26. #26
    mtbr member
    Reputation:
    Join Date
    Dec 2012
    Posts
    319
    This here would seem like an option, a pretty good fit for a 42.
    http://www.jbi.bike/web/checking_pro...t_number=18078

  27. #27
    squish, squish in da fish
    Reputation: fishwrinkle's Avatar
    Join Date
    Jul 2012
    Posts
    1,576
    34 to 42 jump? idk about that.

  28. #28
    mtbr member
    Reputation:
    Join Date
    Jun 2010
    Posts
    136
    yup sounds like a big jump

  29. #29
    mtbr member
    Reputation:
    Join Date
    Dec 2012
    Posts
    319
    Sorry, I was thinking that it was a reasonable proportion to other jumps on the cassette, and as far as # of teeth, not as large as the 24-34 jump on a mega-range freewheel.

    I'm afraid I'm digging myself a hole here with my frequent reference to low end components...

  30. #30
    mtbr member
    Reputation: client_9's Avatar
    Join Date
    Apr 2009
    Posts
    818
    I'm gonna try one of these e*13 40t cogs w/ my 9-speed set up.
    Ships later this month.
    First Look: e*thirteen Extended Range Cog - Pinkbike

  31. #31
    mtbr member
    Reputation:
    Join Date
    Jun 2010
    Posts
    136
    Quote Originally Posted by client_9 View Post
    I'm gonna try one of these e*13 40t cogs w/ my 9-speed set up.
    Ships later this month.
    First Look: e*thirteen Extended Range Cog - Pinkbike
    reasonable price from E13

  32. #32
    mtbr member
    Reputation:
    Join Date
    Jun 2010
    Posts
    136
    after 19.9mi ride last weekend

    40T sprocket on a 1X9 system.. working awesome ;)-dscf1317.jpg

  33. #33
    The Fastest of Bananas
    Reputation: FastBanana's Avatar
    Join Date
    Aug 2013
    Posts
    1,488
    Just thinking out loud, would you be able to use a 9 speed shimano shifter and derailleur? Or would the derailleur not be able to handle the 40t?

  34. #34
    The Fastest of Bananas
    Reputation: FastBanana's Avatar
    Join Date
    Aug 2013
    Posts
    1,488
    Also, just thinking again, ideally one could get a PG-970 and use thinner spacers and a one-up to make a 10 speed cassette without the nasty jumps?

  35. #35
    rebmem rbtm
    Reputation: juancho142's Avatar
    Join Date
    Feb 2010
    Posts
    416
    VERY interesting! I have a 11-34 HG50, Is it possible with this one? I guess I'd have to remove one in the middle and add the 40. Is it easy to separate the bolts? Any spacers needed? I was planning to use this 40T:

    Hope 40T T Rex Rear Cassette Sprocket Range Expander Shimano SRAM Compatable | eBay

  36. #36
    mtbr member
    Reputation: ride the biscuit's Avatar
    Join Date
    Jun 2009
    Posts
    942
    hey, nice one!!

    I am surprised you were able to use a 40t cog with zee since zee is only supposed to only have 11t - 36t range.

    That brings up a potential concern: I see in your vid you can shift to the 40t cog just fine, but when you are in your 11t, is there slack in the chain? Ie: the zee doesnt have 11t-40t range so your chain will not be under adequate tension in the 11t cog if it can shift comfortably in and out of 40t.

  37. #37
    mtbr member
    Reputation:
    Join Date
    Jun 2010
    Posts
    136
    yes it works great, shifting is smooth and no slack on the 11t.
    im with N/W up front and no chain drop.

    i just get back from a desert ride and it still works smooth, didnt had to tune it yet

    Mountain biking
    my little Blog - rides and mtb parts
    http://mtb-il.blogspot.com/

  38. #38
    fly on the wall
    Reputation:
    Join Date
    Nov 2010
    Posts
    424
    Thanks for the update and checking out unknown territory for the rest of us!
    ~Always avoid alliteration.

    Channel: http://www.youtube.com/user/NearlyFr...ew=0&flow=grid

  39. #39
    mtbr member
    Reputation:
    Join Date
    Sep 2013
    Posts
    102
    I wounder if I can use Shimano Zee derailleur with Shimano XT shifter ?

    Thanks

  40. #40
    mtbr member
    Reputation:
    Join Date
    Jun 2014
    Posts
    7
    Hello everyone.

    I adapt my old van change 9v X-0 to 10v
    Anyone know if I can put a 40T sprocket
    OneUp Components - OneUp Components Sprocket

    Thanks
    Name:  900678d1402607099t-40t-sram-x-0-9v-mutated-10-possible-captura.jpg
Views: 1792
Size:  47.0 KB

  41. #41
    mtbr member
    Reputation:
    Join Date
    Jan 2013
    Posts
    89
    i would love to try this but i think a 32 to 40 tooth jump might be to much for my x7 derailleur? if the shimano cassette works with sram derailleur? i might try it and get the 36 tooth.

  42. #42
    mtbr member
    Reputation:
    Join Date
    Jun 2008
    Posts
    6
    Quote Originally Posted by perebor View Post
    Hello everyone.

    I adapt my old van change 9v X-0 to 10v
    Anyone know if I can put a 40T sprocket
    OneUp Components - OneUp Components Sprocket

    Thanks
    Name:  900678d1402607099t-40t-sram-x-0-9v-mutated-10-possible-captura.jpg
Views: 1792
Size:  47.0 KB
    Hello

    Could you explain how you adapted the 9speed X-0 to 10,please?

    thanks

  43. #43
    mtbr member
    Reputation:
    Join Date
    Jun 2014
    Posts
    7
    In ForoMTB.com is a person who adapts to changing 9v 10v

  44. #44
    mtbr member
    Reputation:
    Join Date
    Sep 2013
    Posts
    102
    Hi "client_9", did you get a chance to try the e*13 with 9 speed set up ?

    Thanks

    Quote Originally Posted by client_9 View Post
    I'm gonna try one of these e*13 40t cogs w/ my 9-speed set up.
    Ships later this month.
    First Look: e*thirteen Extended Range Cog - Pinkbike

  45. #45
    mtbr member
    Reputation:
    Join Date
    Jan 2004
    Posts
    471

  46. #46
    mtbr member
    Reputation:
    Join Date
    Jun 2010
    Posts
    136
    looks good...
    my little Blog - rides and mtb parts
    http://mtb-il.blogspot.com/

  47. #47
    mtbr member
    Reputation:
    Join Date
    Sep 2013
    Posts
    102
    Interesting...never heard of SUNRACE

  48. #48
    mtbr member
    Reputation: lew242's Avatar
    Join Date
    Aug 2008
    Posts
    533
    Ha! did this with X7 short cage and two different SRAM PG970 cassettes mixed and matched. One 11-32 and a 11-34.
    40T sprocket on a 1X9 system.. working awesome ;)-wp_20140918_002.jpg
    Installed new Fouriers (Taiwanese company, do they also manufacture for One-up?) 40T ring. Got this because I live in Asia and it's reasonable price and easy to find.

    I had been thinking about exactly the setup I wanted for a while. So went 40-34-28-24-21-18-15-13-11 which gives a lovely flow to the cassette profile, because gaps are 6t-6t-4t-3t-3t-2t-2t.
    Read other reports and had previous a look at the rear derailleur B-screw and realized it needed to be wound out, also the pointy nature of the screw at full stretch was too much and digging in and causing small alloy flakes on the rear derailleur thing that sits on the hanger. Took out the b-screw and put it in backwards, near max extent but made sure some was poking through the other side, perfect. Next put on a new 9 speed SRAM chain PC991, wrapped the chain round the cogs plus 4 links.

    Works well enough, well OK some of the ramps on the different SRAM cassettes don't match up perfectly pretty worn cassettes and an old rear derailleur don't help much, and it can be a bit slow to shift up to the 40t, still rest of gears no worse than it was before.
    Pretty happy, not perfect but close enough for me. I wouldn't recommend a 42T, seems too much for this RD, it might be possible if you had a 12-36 cassette and/or maybe a different RD. Still fail to understand what cage length has to do with shifting, I thought that was to accommodate front rings.

    Just busts a few myths....

    -You must have a medium or long cage RD to run a 40T extended cog! (not true)
    -You must have a clutch type RD. (not true)
    -You can only run extended range on 10 speed. (not true)
    Longer term I might choose an SRAM 10 speed or Shimano XT cassette and 10 speed chain with a Zee RD and shifter, or it's good enough might leave it for longer.

  49. #49
    mtbr member
    Reputation:
    Join Date
    Jun 2010
    Posts
    136

    Good job!

    good to hear
    my little Blog - rides and mtb parts
    http://mtb-il.blogspot.com/

  50. #50
    mtbr member
    Reputation: Feldybikes's Avatar
    Join Date
    Feb 2004
    Posts
    714
    Thanks for the knowledge and inspiration. I did this myself with a big more effort and posted about it in the drivetrain forum: Lightweight 11-40 1x9 DIY

Page 1 of 2 12 LastLast

Similar Threads

  1. Need some help on sprocket sizing
    By rbags68 in forum Singlespeed
    Replies: 11
    Last Post: 04-27-2014, 02:53 AM
  2. Sprocket Kids
    By alaskamatt in forum Alaska
    Replies: 4
    Last Post: 04-17-2014, 07:49 PM
  3. SLX M675 36t sprocket?
    By stygz1 in forum Drivetrain - shifters, derailleurs, cranks
    Replies: 0
    Last Post: 12-28-2013, 06:23 AM
  4. Replies: 5
    Last Post: 09-04-2012, 10:32 AM
  5. Sprocket hop?
    By GoPhilly in forum Drivetrain - shifters, derailleurs, cranks
    Replies: 5
    Last Post: 07-05-2011, 06:57 PM

Posting Permissions

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