Advertise on Bikeforums.net



User Tag List

Results 1 to 22 of 22

Thread: ugh

  1. #1
    Oh The Huge Manatee Lithuania's Avatar
    Join Date
    Feb 2006
    Location
    mabra
    Posts
    4,528
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    ugh

    So last night I was doing a sprint workout on my trainer. After a few intervals something wasnt feeling right so I hopped off and took a look. My rear tire is rubbing against the non drive side chainstay

    My wheel seems pretty true. Its not rubbing against the brake at all. For the next half hour or so I tried to work out what was going on. I kept taking the wheel out and resetting it thinking maybe it was in crooked or something but no matter what the wheel came way too close to the stay. I didnt have any other wheels with tires on to try out but I did throw another wheel on and it still looked like it was too close.

    Now I am worried I damaged my frame on the trainer some how. I am sneaking out of work this morning to take it to a shop to get thier opinion on the matter but in any case I get way too frustrated when mechanical issues interrupt my training.

    i really really really hope my frame is ok for so many reasons.

  2. #2
    Peloton Dog patentcad's Avatar
    Join Date
    Nov 2005
    Location
    Chester, NY
    My Bikes
    2013 Scott Foil, 2009 Scott Addict R2, 2008 Cervelo P3 TT bike, 2008 Motobecane Fly Ti Hard Tail MTB
    Posts
    55,927
    Mentioned
    16 Post(s)
    Tagged
    1 Thread(s)
    Damn. I thought 'ugh' was some cool new doping technique we could learn about here.

  3. #3
    1.9lb/in pseudobrit's Avatar
    Join Date
    Nov 2004
    Location
    Susquehanna shoreline
    My Bikes
    LeMond, CAAD9/1
    Posts
    1,360
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by patentcad View Post
    Damn. I thought 'ugh' was some cool new doping technique we could learn about here.
    You're thinking of GHU. WADA still haven't developed a test for it. Fantastic stuff. Bumps your TSS/hr by at least 13 kN and never will your know that your PFT has dropped below whatever your VSM was when you started your season. The best part is that your HCTA stays in range.

  4. #4
    Making a kilometer blurry waterrockets's Avatar
    Join Date
    May 2006
    Location
    Austin (near TX)
    My Bikes
    rkwaki's porn collection
    Posts
    25,978
    Mentioned
    18 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Lithuania View Post
    So last night I was doing a sprint workout on my trainer. After a few intervals something wasnt feeling right so I hopped off and took a look. My rear tire is rubbing against the non drive side chainstay

    My wheel seems pretty true. Its not rubbing against the brake at all. For the next half hour or so I tried to work out what was going on. I kept taking the wheel out and resetting it thinking maybe it was in crooked or something but no matter what the wheel came way too close to the stay. I didnt have any other wheels with tires on to try out but I did throw another wheel on and it still looked like it was too close.

    Now I am worried I damaged my frame on the trainer some how. I am sneaking out of work this morning to take it to a shop to get thier opinion on the matter but in any case I get way too frustrated when mechanical issues interrupt my training.

    i really really really hope my frame is ok for so many reasons.
    One trick is to try putting your rear wheel in backwards. Just shift the rear to the small cog, and it should be out of the way enough to try it.

    Other than that, make sure your dropouts aren't closed up somehow, or maybe contaminated with some gunk, preventing the axle from fully seating.

    Try loosening the qr and pushing the wheel so it's centered. Which way to the axle ends move to allow this to happen. Does that give you any more clues?

    It's not like one chainstay got shorter on the trainer or something. if the wheel still fits in the dropouts cleanly, I can't see how it could be the frame (other than the dropouts).

  5. #5
    Oh The Huge Manatee Lithuania's Avatar
    Join Date
    Feb 2006
    Location
    mabra
    Posts
    4,528
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by waterrockets View Post
    Try loosening the qr and pushing the wheel so it's centered. Which way to the axle ends move to allow this to happen. Does that give you any more clues?
    When I was messing with it last night I could get the wheel centered if I didnt have both ends of the axle sitting flush with the back of the dropout but I dont think I was ever able to tighten it down like that.

  6. #6
    Senior Member
    Join Date
    Dec 2006
    Posts
    6,286
    Mentioned
    7 Post(s)
    Tagged
    1 Thread(s)
    your wheel is probably not "seated" correctly in the dropouts, it's probably crooked. loosen the skewer and re-seat the wheel, it should straighten it out.

  7. #7
    . botto's Avatar
    Join Date
    Jan 2006
    Posts
    40,335
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    have you checked the skewer?

    i snapped one in a race once, and my tire rubbed the frame right off the paint.

    even worse, with all of that rub i placed just outside of the money.

  8. #8
    Oh The Huge Manatee Lithuania's Avatar
    Join Date
    Feb 2006
    Location
    mabra
    Posts
    4,528
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    i took the wheel out like a million times and reseated it thinking that was it but it didnt seem to make a difference. I even took one end of the QR completely off to make sure it was in all the way.

  9. #9
    Super Moderator
    Join Date
    Feb 2007
    Location
    Tariffville, CT
    My Bikes
    Tsunami Bikes
    Posts
    12,155
    Mentioned
    16 Post(s)
    Tagged
    0 Thread(s)
    cracked frame?

    Last time this happened to me I neglected to notice a huge gap in the right chainstay. Okay, it wasn't huge, but it was flexing like mad and caused all sorts of odd "alignment" problems and eventually I noticed there was a 1-3 mm gap in the chainstay (halfway through, on the bottom, the top wasn't completely broken, so it looked okay when I looked down at the bike). Could also be things like a loose dropout, cracked seatstay or something, even cracked bb (unlikely given the symptoms).

    A less exciting but more preferable outcome - broken axle?

    They don't happen often but it would cause the hub to move around a bit. Might be noticeable between freehub body and hub body. Campy's freehub design doesn't support the outside of the axle on the freehub side so the axle is a bit more vulnerable. Dunno if you have Campy or not. Shimano's does so broken axles are unlikely.

    hoping it's a careless thing, not a significant thing,
    cdr

  10. #10
    umd
    umd is offline
    Banned umd's Avatar
    Join Date
    Sep 2005
    Location
    Santa Barbara, CA
    My Bikes
    Specialized Tarmac SL2, Specialized Tarmac SL, Giant TCR Composite, Specialized StumpJumper Expert HT
    Posts
    28,343
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I had a similar situation once (not on a trainer), where a spacer thingie on the skewer ended up on the wrong side of the dropout, and although it appeared that I was able to get the wheel all the way on, I couldn't get it to line up right and it kept rubbing.

  11. #11
    Writin' stuff ZeCanon's Avatar
    Join Date
    Feb 2007
    Location
    Boulder, CO
    Posts
    3,779
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I highly doubt you could pull your frame out of alignment just by sprinting on a trainer, or bend your dropouts at all for that matter. If you did, there was something wrong with the frame already. I would start by trying a different wheel, just to isolate the problem to the frame or the wheel. If it's the frame, check everywhere very carefully for cracks/buckles/dents. Do you have any sort of carbon/metal bonding going on back there (like an aluminum bike with carbon seatstays)? things could be loose if something un-bonded itself. This would be a warranty issue as well.
    Velo Magazine/VeloNews.com tech guy get in touch or hit me on the tweeter @CaleyFretz

  12. #12
    Oh The Huge Manatee Lithuania's Avatar
    Join Date
    Feb 2006
    Location
    mabra
    Posts
    4,528
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    turns out the frame is slightly out of alignment and the wheel's dish got all effed up from riding the trainer too much.

    its all worked out now

  13. #13
    Senior Member
    Join Date
    Mar 2006
    Location
    Saint Louis, MO
    My Bikes
    Motobecane fixed conversion, Faggin fixed conversion, '86 Raleigh Grand Prix
    Posts
    549
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    That happened to me once and it turned out to be a broken axle.

    edit: oh, you already figured it out.

  14. #14
    Elite Fred mollusk's Avatar
    Join Date
    Aug 2005
    Location
    Edge City
    My Bikes
    2009 Spooky (cracked frame), 2006 Curtlo, 2002 Lemond (current race bike) Zurich, 1987 Serotta Colorado, 1986 Cannondale for commuting, a 1984 Cannondale on loan to my son
    Posts
    10,602
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Lithuania View Post
    turns out the frame is slightly out of alignment and the wheel's dish got all effed up from riding the trainer too much.
    Please explain to me how this might happen. I'm not trying to be a d*ck, but this doesn't make sense to me and I'd like to know what is going on.
    I'm the world's forgotten boy. The one who's searchin', searchin' to destroy.

  15. #15
    Oh The Huge Manatee Lithuania's Avatar
    Join Date
    Feb 2006
    Location
    mabra
    Posts
    4,528
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    i dont know dude. thats just what the guy told me. He said something about the trainer allowing you to ride diagonal or something.

  16. #16
    Throw the stick!!!! LowCel's Avatar
    Join Date
    Apr 2003
    Location
    Charleston, WV
    My Bikes
    GMC Denali
    Posts
    17,586
    Mentioned
    12 Post(s)
    Tagged
    1 Thread(s)
    Quote Originally Posted by mollusk View Post
    Please explain to me how this might happen. I'm not trying to be a d*ck, but this doesn't make sense to me and I'd like to know what is going on.
    If it was slightly crooked due to the frame being out of alignment constant pressure could cause the wheel to just keep getting more and more out of true. Just a guess.
    I may be fat but I'm slow enough to make up for it.

  17. #17
    Making a kilometer blurry waterrockets's Avatar
    Join Date
    May 2006
    Location
    Austin (near TX)
    My Bikes
    rkwaki's porn collection
    Posts
    25,978
    Mentioned
    18 Post(s)
    Tagged
    0 Thread(s)
    I think it's more likely to be a concentrated point of contact on the wheel. If the pressure is more localized than it is on the road (dunno if it is or not), then the rolling tension changes in the wheel would be exaggerated. If (poorly built) wheels have a tendency to go out of dish over time due to failure to adjust spokelines and stress relieve, then this process would be accelerated.

    I guess if you ride crooked, this would be even more of a force concentration on the spokes of one side of the wheel.

    This is the first I've heard of any trainer effects on wheels though...

  18. #18
    Senior Member Copperhed51's Avatar
    Join Date
    Jul 2008
    Location
    Overland Park, KS and Denver, CO
    My Bikes
    2008 Felt F5 w/ SRAM Force, 2002 Giant OCR2, Specialized Stumpjumper M2 Comp
    Posts
    719
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Since this thread seems pretty close to what my issue is, I'm bringing it back from the dead. I got my KK trainer a week or so ago and began riding it as soon as I got it. I noticed it was ridiculously difficult and just figured I was completely out of shape and needed to HTFU. I also noticed the strong smell of burning rubber and after my rides, I'd have large rubber shavings all over the ground in front of my rear tire.

    Turns out I had my rear wheel mounted crooked and it was rubbing against the non drive-side chainstay. I rode it like this for an hour. This was on my carbon Felt F5 and when I finally realized what was happening, I got sick to my stomach. I took the wheel off and there is a noticable (by feel) indentation where the wheel rubbed the chainstay. It doesn't feel weak and I've hammered on the bike during some more recent trainer sessions and all seems normal. I'm kicking myself for not just hooking up my old Aluminum OCR2 like I'd planned but I was in a hurry to get on the trainer and my Giant was somewhat taken apart. Anyway, my question is, has anybody else had this happen to them and did it cause any long term problems? Thanks.
    2009 Cannondale CAAD9 w/ SRAM Rival & a SRAM Red FD
    2008 FELT F5 w/ SRAM Force
    2002 Giant OCR2
    2002 Specialized Stumpjumper

  19. #19
    Banned.
    Join Date
    Dec 2008
    Posts
    173
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by botto View Post
    have you checked the skewer?

    i snapped one in a race once, and my tire rubbed the frame right off the paint.

    even worse, with all of that rub i placed just outside of the money.
    Or the other way around.

  20. #20
    Banned.
    Join Date
    Dec 2008
    Posts
    173
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Makes me worried about putting a nice bike on a trainer.

  21. #21
    I eat carbide. Psimet2001's Avatar
    Join Date
    Jan 2006
    Location
    Elgin, IL
    My Bikes
    Lots. Current sponsors - Giant and Specialized
    Posts
    19,290
    Mentioned
    7 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Copperhed51 View Post
    Since this thread seems pretty close to what my issue is, I'm bringing it back from the dead. I got my KK trainer a week or so ago and began riding it as soon as I got it. I noticed it was ridiculously difficult and just figured I was completely out of shape and needed to HTFU. I also noticed the strong smell of burning rubber and after my rides, I'd have large rubber shavings all over the ground in front of my rear tire.

    Turns out I had my rear wheel mounted crooked and it was rubbing against the non drive-side chainstay. I rode it like this for an hour. This was on my carbon Felt F5 and when I finally realized what was happening, I got sick to my stomach. I took the wheel off and there is a noticable (by feel) indentation where the wheel rubbed the chainstay. It doesn't feel weak and I've hammered on the bike during some more recent trainer sessions and all seems normal. I'm kicking myself for not just hooking up my old Aluminum OCR2 like I'd planned but I was in a hurry to get on the trainer and my Giant was somewhat taken apart.
    Anyway, my question is, has anybody else had this happen to them and did it cause any long term problems? Thanks.
    Can't tell unless you clean it up and check. If you just went thorough the pain and not into the frame then you should be fine. If not then you may need to have a repair done. Take it to a shop if you are not sure.

  22. #22
    I eat carbide. Psimet2001's Avatar
    Join Date
    Jan 2006
    Location
    Elgin, IL
    My Bikes
    Lots. Current sponsors - Giant and Specialized
    Posts
    19,290
    Mentioned
    7 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by AsianCarbon View Post
    Makes me worried about putting a nice bike on a trainer.
    Don't be. Follow the instructions and quit worrying.

    If you hear sounds that don't sound normal or feel things that feel different (other than the feeling of wanting to puke during threshold intervals) then stop and figure out what's going on.

Posting Permissions

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