Mtbr's 2016 Winter Biking GearReviews and Roundups

FAT BIKES

WINTER APPAREL

TRAINERS

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  1. #101
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    Reputation: Raymo853's Avatar
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    Re: Shimano XT M775 Wheelset Freehub fails ?

    Another ring to consider, buy a whole hub off of e bay. Then use the freewheel from that. Leaves you with a backup axle, spacers, caps and such. And you wanted the extra hub body as a cool desk accessory.

  2. #102
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    Yeah, I did this. I bought 2 XT hubs from Chain reaction because it was better value than buying a freehub alone (Also bought 2 rear wheels and countless freehub boddies).

    Trouble is, they were both faulty from NEW, like every single Shimano freehub I have owned in the last 10 years or so, they would occasionally slip 1 pawl / ratchet during every ride. Just enough to ruin confidence in the bike, and ruin the ride.
    Stay away from every Shimano XT or similar rear hub from early 2000's right up to those from as late as 2012 (after that date, or SLX models etc I cant comment).

  3. #103
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    add another to the list. i cracked a 785 freehub just the same as the rest of you. i have enough spare parts to rebuild twice so we'll see how long that lasts. i should have just bought chris king from the start. more money sure, but, you never have to worry about them breaking

  4. #104
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    Quote Originally Posted by racebum View Post
    i should have just bought chris king from the start. more money sure, but, you never have to worry about them breaking
    buy the best, you'll always be happy with what you got.

    I got mine used from fleabay, sent them to CK for a rebuild. good as new, cheaper than new. Colors don't match though. oh well.
    My bike MCA kinda climbs like a billy-goat. WOO WOO!

  5. #105
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    I've also had two M785 hubs fail in this way. I'm about to replace the second one. Does anyone know of any non Shimano hub that's the same dimensions as the M785 so I can use the same spokes?

  6. #106
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    Quote Originally Posted by 4wdphil View Post
    I've also had two M785 hubs fail in this way. I'm about to replace the second one. Does anyone know of any non Shimano hub that's the same dimensions as the M785 so I can use the same spokes?
    don't re-use spokes.
    My bike MCA kinda climbs like a billy-goat. WOO WOO!

  7. #107
    meow, meow.
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    It's totally OK to reuse spokes if all of the following conditions are met:

    1. High quality of wheel build (spoke tensions are high, equal per side, and stable over time).
    2. Spoke tensions have been checked and restored soon after every incident that could damage the rim or the spokes directly.
    3. There was no damage done to spokes by foreign objects entering the wheel, such as trying to pedal with chain derailed from the biggest cog, tree branches, rocks, another bike's pedal in bike collision, being kicked by a horse (also a real case from my practice), etc. Any spokes left intact in a wheel that suffered spoke collision, can still be reused if all other listed conditions hold.
    4. There were no spoke fatigue failures in the wheel.


    4wdphil,
    I don't recall many hubs having effective flange diameters similar to Shimano's 44-ish mm on both sides. Centerlock versions of DT Swiss 240S or 350 should work. If you choose a typical Taiwanese hub (they tend to have effective flange diameter of 58 mm on both sides), your spokes are going to be too long by 1.5-2 mm on each side. That's no reason to avoid reusing them unless they were already too long in the original wheel. I'd take brass nipples for such a build.
    Last edited by J. Random Psycho; 11-06-2015 at 10:11 AM. Reason: added 4th condition for spoke reuse

  8. #108
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    Thanks, much appreciated Random Psycho.



    J. Random Psycho;12294361]It's totally OK to reuse spokes if all of the following conditions are met:

    1. High quality of wheel build (spoke tensions are high, equal per side, and stable over time).
    2. Spoke tensions have been checked and restored soon after every incident that could damage the rim or the spokes directly.
    3. There was no damage done to spokes by foreign objects entering the wheel, such as trying to pedal with chain derailed from the biggest cog, tree branches, rocks, another bike's pedal in bike collision, being kicked by a horse (also a real case from my practice), etc. Any spokes left intact in a wheel that suffered spoke collision, can still be reused if conditions (1) and (2) hold.
    4. There were no spoke fatigue failures in the wheel.


    4wdphil,
    I don't recall many hubs having effective flange diameters similar to Shimano's 44-ish mm on both sides. Centerlock versions of DT Swiss 240S or 350 should work. If you choose a typical Taiwanese hub (they tend to have effective flange diameter of 58 mm on both sides), your spokes are going to be too long by 1.5-2 mm on each side. That's no reason to avoid reusing them unless they were already too long in the original wheel. I'd take brass nipples for such a build.[/QUOTE]

  9. #109
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    I always heard these things broke a lot. Mine has almost 1000miles on it now and its still going strong. I bought a back up freehub just incase but so far its been good.
    14 Banshee Paradox
    13 Banshee Rune
    T1 barcode

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