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Thread: Ask the experts

  1. #13901
    Join Date
    Apr 2004
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    Three-O-Three
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    15,582
    FWIW, I rode with a guide in Peru over the winter who snapped the rear brake caliper right inside the back bolt so it was only holding on with the front. He rode it all day that way on some pretty gnarly trails with zero issues.

  2. #13902
    Join Date
    Dec 2007
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    Quote Originally Posted by smmokan View Post
    FWIW, I rode with a guide in Peru over the winter who snapped the rear brake caliper right inside the back bolt so it was only holding on with the front. He rode it all day that way on some pretty gnarly trails with zero issues.
    So what you're saying is that I should only run one brake mount bolt to save weight?

    Sent from my SM-S901U using Tapatalk

  3. #13903
    Join Date
    Oct 2017
    Location
    Evergreen Co
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    1,044
    Are counterfeit XTR pedals a thing?

    I bought a pair off eBay, didn’t realize they were shipping from China. They arrived and looked fine but a couple hundred miles in the axle has massive play (4-5 mm left right) and when I went to rebuild I noticed that the axel uses a 5/8 inch wrench… and I’m pretty used to Shimano uses mm. I don’t have another XTR pedal around but XT’s are a 17mm cone wrench.

  4. #13904
    Join Date
    Nov 2005
    Location
    Down In A Hole, Up in the Sky
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    36,191
    Sadly, this is definitely a thing. Seems like it would be MASSIVELY expensive to set up a factory/assembly line for such a niche product.

    https://www.mtbr.com/search/1707230/...ls&o=relevance

    Click image for larger version. 

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    Forum Cross Pollinator, gratuitously strident

  5. #13905
    Join Date
    Dec 2007
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    Hell Track
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    Quote Originally Posted by rideit View Post
    Sadly, this is definitely a thing. Seems like it would be MASSIVELY expensive to set up a factory/assembly line for such a niche product.
    I would kinda assume it's something where they're using the old tooling from real shimano pedals. Like the tooling and castings got used to make the real thing for a while and are now worn out and not to spec, so they got "discarded" into the hands of some other Chinese factory that's still using them to make shitty knock offs that more or less look the same.

    Sent from my SM-S901U using Tapatalk

  6. #13906
    Join Date
    Feb 2016
    Location
    Los Angeles/Mammoth
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    1,358
    Quote Originally Posted by rideit View Post
    Sadly, this is definitely a thing. Seems like it would be MASSIVELY expensive to set up a factory/assembly line for such a niche product.

    https://www.mtbr.com/search/1707230/...ls&o=relevance

    Click image for larger version. 

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    Thanks for mentioning this! I recently bought some PD-8100 pedals on ebay from the seller below, and notice one the pedals does not spin very well and the other spins pretty slowly. After looking at the MTBR thread, Im almost certain mine are counterfeit because they have all the same differences. I dont know if the seller maybe got screwed from their supplier and didnt know, or if its there fault.

    https://www.mtbr.com/threads/fake-deore-xt.1210812/

    https://www.ebay.com/itm/386098539604?var=653647971045

  7. #13907
    Join Date
    Oct 2017
    Location
    Evergreen Co
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    1,044
    Well that kinda confirms things. I did check and the sizes of bolts actually do match current XTR so I like the stolen castings theory.

    When I bought them I didn’t realize they were coming from China and I was suspicious when they arrived. They passed the visual test but last ride one pedal body unthreaded off the axle (got like 90% of the way off) and they seem to be a little softer. The cleats are slowly denting the pedal body.

  8. #13908
    Join Date
    Oct 2011
    Posts
    1,299
    I'm slowly progressing in my build of a torque-sensing mid-drive Ebike conversion of a Salsa Journeyman from the late 20teens. My eyes for battery and range were unfortunately bigger than my front triangle accessory bosses can handle and I'm in the awkward position of having to install a third boss higher up the down tube to accommodate the battery mount. I'm looking at rivnuts, couple questions:
    1) Size: 5mm/0.8. Other parameters I need to account for? Trying to get as close to stock hardware as possible
    2) Material: My choices are stainless vs Zinc-plated carbon steel. I've never set Rivnuts in aluminum before, any weird metallurgical/chemical considerations I need to account for?

    Sent from my Pixel 5 using Tapatalk

  9. #13909
    Join Date
    May 2002
    Location
    Halfway Between the Gutter and the Stars
    Posts
    3,849
    I have a belt drive SS on an HG hub on a norco watchamacallit. I have an Alifine 8 sp with no cog/c clips.... What do I need to mount a belt cog to my Alfine?
    You are what you eat.
    ---------------------------------------------------
    There's no such thing as bad snow, just shitty skiers.

  10. #13910
    Join Date
    Sep 2004
    Location
    LV-426
    Posts
    21,449
    Quote Originally Posted by Huskier View Post
    I'm slowly progressing in my build of a torque-sensing mid-drive Ebike conversion of a Salsa Journeyman from the late 20teens. My eyes for battery and range were unfortunately bigger than my front triangle accessory bosses can handle and I'm in the awkward position of having to install a third boss higher up the down tube to accommodate the battery mount. I'm looking at rivnuts, couple questions:
    1) Size: 5mm/0.8. Other parameters I need to account for? Trying to get as close to stock hardware as possible
    2) Material: My choices are stainless vs Zinc-plated carbon steel. I've never set Rivnuts in aluminum before, any weird metallurgical/chemical considerations I need to account for?

    Sent from my Pixel 5 using Tapatalk
    Could you use a water bottle mount extension bracket instead? Not sure if that would be the stronger choice vs drilling and adding a riv nut though.

    https://www.amazon.com/Mounting-Alum...3&gad_source=1
    Quote Originally Posted by powder11 View Post
    if you have to resort to taking advice from the nitwits on this forum, then you're doomed.

  11. #13911
    Join Date
    Oct 2011
    Posts
    1,299
    Quote Originally Posted by El Chupacabra View Post
    Could you use a water bottle mount extension bracket instead? Not sure if that would be the stronger choice vs drilling and adding a riv nut though.

    https://www.amazon.com/Mounting-Alum...3&gad_source=1
    Did not know that existed, will give 'er a try, thanks!

    Sent from my Pixel 5 using Tapatalk

  12. #13912
    Join Date
    Oct 2003
    Location
    Seattle
    Posts
    5,431
    Quote Originally Posted by Tailwind View Post
    Are counterfeit XTR pedals a thing?

    I bought a pair off eBay, didn’t realize they were shipping from China. They arrived and looked fine but a couple hundred miles in the axle has massive play (4-5 mm left right) and when I went to rebuild I noticed that the axel uses a 5/8 inch wrench… and I’m pretty used to Shimano uses mm. I don’t have another XTR pedal around but XT’s are a 17mm cone wrench.
    While my experience wasn’t with pedals, I received counterfeit Shimano cleats from an Amazon seller. The packaging was very convincing but the cleats were made of painted, super soft metal that you absolutely could not safely use.

  13. #13913
    Join Date
    Apr 2008
    Location
    Treading Water
    Posts
    6,968
    What 11 speed chain should I be getting?
    I feel like some of you fellas are passionate about this.
    FWIW, I won't be using any Queso.
    However many are in a shit ton.

  14. #13914
    Join Date
    Jan 2008
    Location
    BC to CO
    Posts
    5,023
    Quote Originally Posted by jm2e View Post
    What 11 speed chain should I be getting?
    I feel like some of you fellas are passionate about this.
    FWIW, I won't be using any Queso.
    With 11s you still have the choice to run what ever brand you want.
    You can’t go wrong with any of the upper level chains. For an extra $17-20 for the top of the line chain, it’s worth it. If cost is the driver find the best deal on a mid range solid pin chain.
    I would not cheap out and buy a low end chain.
    I think the quieter chain noise alone on the chamfered plated chains is worth the spend.

    Top of the line hallow pins or plate cut outs, chamfered plates are:
    KMC X11 SL or EL
    DuraAce/XTR 901
    SRAM Red 22 or 1170

    Solid pins, still chamfered plates:
    KMC x11
    Ultegra/XT 701

    Cheaper, heavier but better value:
    Shimano 601
    SRAM 1130
    Don’t buy anything below this level.

  15. #13915
    Join Date
    Apr 2008
    Location
    Treading Water
    Posts
    6,968
    Brilliant. Cheers.
    However many are in a shit ton.

  16. #13916
    Join Date
    Nov 2005
    Location
    Pagosa Springs CO
    Posts
    1,038
    The clutch acthuator on my 12 speed XT will not stay in the on position when I ride. The clutch works when it's on.
    The shifting is flawless just a little noisy in the rock gardens.
    It's 4 years old so I just ordered a new clutch package.
    Anybody experience this or have any ideas?
    Thanks.

  17. #13917
    Join Date
    Apr 2008
    Location
    Treading Water
    Posts
    6,968

    Ask the experts

    Gorilla Tape vs Aquaseal.


    Sent from my iPhone using TGR Forums
    However many are in a shit ton.

  18. #13918
    Join Date
    Feb 2008
    Location
    here and there
    Posts
    18,784
    So looking at longer travel 29” bikes, how does Marcoozzy forks and shocks stack up to Rock Shocks?
    watch out for snakes

  19. #13919
    Join Date
    Feb 2008
    Location
    here and there
    Posts
    18,784
    Ibis ripmo af has the Marzzy fork/shocks where as Giant Trance has RS.
    watch out for snakes

  20. #13920
    Join Date
    Dec 2007
    Location
    The better LA
    Posts
    2,719
    Quote Originally Posted by jm2e View Post
    Gorilla Tape vs Aquaseal.


    Sent from my iPhone using TGR Forums
    NOOOOOOOOOOOOOOOOOOOOOOOOOOOOO!
    Sorry, thoughts of gorilla tape residue brings on PTSD from days of cleaning/re-glueing tubulars.

    I know nothing about Aquaseal.
    Quote Originally Posted by Jer View Post
    After the first three seconds, Corbet's is really pretty average.
    Quote Originally Posted by Ian Malcolm View Post
    I mean, it's not your fault. They say talent skips a generation.
    But hey, I'm sure your kids will be sharp as tacks.

  21. #13921
    Join Date
    Mar 2010
    Posts
    2,508
    Quote Originally Posted by Powder Ho View Post
    The clutch acthuator on my 12 speed XT will not stay in the on position when I ride. The clutch works when it's on.
    The shifting is flawless just a little noisy in the rock gardens.
    It's 4 years old so I just ordered a new clutch package.
    Anybody experience this or have any ideas?
    Thanks.
    Don't always need to order a new one, pretty easy to service your clutch using an online vid. They do get dirty over time and the actuator won't always work well when gunked up inside. I've done it to many of mine and always works.

  22. #13922
    Join Date
    Nov 2005
    Location
    Pagosa Springs CO
    Posts
    1,038
    Quote Originally Posted by bamboocoreONLY View Post
    Don't always need to order a new one, pretty easy to service your clutch using an online vid. They do get dirty over time and the actuator won't always work well when gunked up inside. I've done it to many of mine and always works.
    I had it serviced this past winter, but I'll try that. Thanks.
    Gorilla tape or Aquaseal not an option.

  23. #13923
    Join Date
    Jan 2008
    Location
    BC to CO
    Posts
    5,023
    Quote Originally Posted by jm2e View Post
    Gorilla Tape vs Aquaseal.
    Customer at bike shop "Why was the tubeless refresh and rim tape service job sooo expensive?"
    Me: "That's a good question to ask the shop that installed Gorilla Tape on your nice carbon rims"

  24. #13924
    Join Date
    May 2002
    Location
    Halfway Between the Gutter and the Stars
    Posts
    3,849
    Does anyone make a sram freehub mounted shimano compatible 12 speed cassette?

    The bike shop I got my wife's Orbea Wild at (Kelowna eride) fuct up and put the wrong wheel on her bike. They were probably building 2 similar biked and swapped rear wheels. They want me to leave thd bike with them to sed what they neec to fix it but well, fuck them. My dealings with them have been less than good, I'll do it myself. If I have to swap my freehub body as well I'll do that too but if someone makes a cassette that works I'll slap it on and roll with it.
    You are what you eat.
    ---------------------------------------------------
    There's no such thing as bad snow, just shitty skiers.

  25. #13925
    Join Date
    Dec 2007
    Location
    Hell Track
    Posts
    14,396
    Quote Originally Posted by Beaver View Post
    Does anyone make a sram freehub mounted shimano compatible 12 speed cassette?

    The bike shop I got my wife's Orbea Wild at (Kelowna eride) fuct up and put the wrong wheel on her bike. They were probably building 2 similar biked and swapped rear wheels. They want me to leave thd bike with them to sed what they neec to fix it but well, fuck them. My dealings with them have been less than good, I'll do it myself. If I have to swap my freehub body as well I'll do that too but if someone makes a cassette that works I'll slap it on and roll with it.
    What do you mean by "shimano compatible"?

    A sram cassette will work with a shimano derailleur. A sram cassette won't work so well with a shimano chain.

    Do you already have a shimano cassette and chain? A microspline freehub body is almost certainly going to be cheaper than an XD cassette.

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