Advertise on Bikeforums.net



User Tag List

Results 1 to 11 of 11
  1. #1
    Senior Member armybikerider's Avatar
    Join Date
    Jun 2009
    Posts
    218
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Freehub question

    All,

    I was 55 miles into a 70 mile ride on Sunday when I noticed that there was no "free-wheeling noise" at the rear wheel when I wasn't pedaling.

    When I finished I could spin the cranks/pedals in the drive direction without anything engaging. Obviously the pawls on the freehub body are not engaging.

    Question....is there something I should/can do to fix the problem or is it an automatic freehub body replacement? The components have 11,200 miles of fast but not abusive miles. I have a Fulcrum Racing 5 wheel with an Sram OG 1070 cassette.

    Thanks
    [SIGPIC][/SIGPIC]

  2. #2
    Old fart JohnDThompson's Avatar
    Join Date
    Nov 2004
    Location
    Appleton WI
    My Bikes
    Several, mostly not name brands.
    Posts
    12,356
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)
    Before you deep-six it, try flushing the ratchet mechanism out with e.g. WD-40 to free up the pawls.

  3. #3
    Senior Member MudPie's Avatar
    Join Date
    May 2004
    Location
    Southern California
    Posts
    1,874
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    You can try to flush out the freehub body with WD40 or a solvent, after your remove the body from the hub. Then lube with a heavy oil or light grease through the annular space. A grease injector is probably required. But this may just be a temporary fix. I've used Phil Wood Tenacious Oil (relatively heavy and sticky) to lube a freehub body, but it was only temporary.

    It'll probably be worth buying a new freehub. Depending on the freehub brand, I'm guessing they're about $30 (at least my Bontrager costs that at the LBS). You need to match the freehub body to the hub. And match the casette to the freehub body (most likely Shimano compatible based on the 1070 cassette. If you can remove it (fairly easy) you can probably take it to an LBS for a match,

    BTW - 1070 is a great cassette.

  4. #4
    Senior Member armybikerider's Avatar
    Join Date
    Jun 2009
    Posts
    218
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Thanks.

    Online the best price for a Sram/Shimano compatible Fulcrum freehub is about $60. Considering the mileage on the original cassette and chain over the last 22 months (11,200) I've already planned on replacing them with this repair, this time with a PG 1070 12-25 and a KMC DX10-SC chain.
    [SIGPIC][/SIGPIC]

  5. #5
    Senior Member
    Join Date
    Apr 2009
    Location
    New Rochelle, NY
    My Bikes
    too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
    Posts
    19,975
    Mentioned
    31 Post(s)
    Tagged
    1 Thread(s)
    I'm not sure if Fulcrum wheels use the 4 bearing system that Campy uses on Campagnolo branded hubs and wheels. If so it's ultra easy to service the ratchet system. Yemove the axle from the left and the cassette body will come off together. In this system and others like them the ratchet is half on the cassette body, and half in the hub shell. That allows you to clean and inspect the ratchet ring, pawls and spring very easily and repair them (usually just the spring) as needed and reassemble.
    FB
    Chain-L site

    An ounce of diagnosis is worth a pound of cure.

    “Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin

    “One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN

    WARNING, I'm from New York. Thin skinned people should maintain safe distance.

  6. #6
    Senior Member armybikerider's Avatar
    Join Date
    Jun 2009
    Posts
    218
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I've got a cassette lockring tool and chain whip coming...hopefully tommorrow so that I can remove (and replace) the cassette and then take the freehub body off the hub shell and see what's going on.

    Freehubs have 2 sets of pawls and springs...one internal (and not repairable) and one external (and fixable)......correct?

    The advice here is to flush the internal pawls?
    [SIGPIC][/SIGPIC]

  7. #7
    Senior Member Paul01's Avatar
    Join Date
    Sep 2010
    Location
    Tampa Bay, Fl
    My Bikes
    Vitus 979, KHS Montana Comp
    Posts
    531
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Carb or brake cleaner from the auto parts store will remove any hardened grease and crud. Use in a well ventilated area and relube.

  8. #8
    Gluteus Enormus mmmdonuts's Avatar
    Join Date
    Dec 2007
    Location
    Raleigh, NC
    My Bikes
    Yes
    Posts
    2,229
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Those wheels have 4 cartridge bearings, 2 in the hub and 2 in the freehub. Very easy to take apart and check the 3 pawls, which are held onto the freehub by the spring. Nothing will fall apart when you remove the axle. I serviced mine not too long ago.
    Everybody's got plans... until they get hit.
    - Mike Tyson

  9. #9
    Senior Member armybikerider's Avatar
    Join Date
    Jun 2009
    Posts
    218
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by mmmdonuts View Post
    Those wheels have 4 cartridge bearings, 2 in the hub and 2 in the freehub. Very easy to take apart and check the 3 pawls, which are held onto the freehub by the spring. Nothing will fall apart when you remove the axle. I serviced mine not too long ago.
    Thanks....but are there also internal pawls that aren't accessable?
    [SIGPIC][/SIGPIC]

  10. #10
    Gluteus Enormus mmmdonuts's Avatar
    Join Date
    Dec 2007
    Location
    Raleigh, NC
    My Bikes
    Yes
    Posts
    2,229
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by armybikerider View Post
    Thanks....but are there also internal pawls that aren't accessable?
    No, just the 3 that engage the ring in the hub body. It's a very simple mechanism.
    Everybody's got plans... until they get hit.
    - Mike Tyson

  11. #11
    Senior Member armybikerider's Avatar
    Join Date
    Jun 2009
    Posts
    218
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Thanks for all the advice and help guys.

    I got the freehub off today and discovered a broken pawl spring. No luck finding one at my 2 LBS's, so I'll order one online tommorrow....better than getting an entirely new freehub!

    David
    [SIGPIC][/SIGPIC]

Posting Permissions

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