Advertise on Bikeforums.net



User Tag List

Page 1 of 3 123 LastLast
Results 1 to 25 of 66
  1. #1
    Senior Member
    Join Date
    Apr 2009
    Location
    Colorado Springs
    My Bikes
    Surly Steamroller, Schwinn Continental II
    Posts
    136
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    effects of skidding

    what are the effects of skidding on your fixed gear bike? I'm sure it's not too good for your frame and other components to suddenly sieze up your wheel/ cranks, and I'v never read anything about the effects of skidding... Inform.

  2. #2
    Senior Member 2wheelsgood's Avatar
    Join Date
    Jan 2007
    Location
    Toronto
    My Bikes
    '08 Marinoni Pista, '05 specialized langster(RIP), '06 norco kokanee(RIP), '05 norco charger(RIP),'08 surly steamroller, surly big dummy coming soon!
    Posts
    647
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    your bike will ooze machismo.

  3. #3
    asphalt demon Redline927's Avatar
    Join Date
    May 2008
    Posts
    288
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    hard on chain, cog/lockring/hub, bottom bracket, tire, knees, etc.

  4. #4
    pcbc Radatad's Avatar
    Join Date
    Mar 2009
    Location
    Tuscaloosa, AL
    My Bikes
    motobecane mirage, schwinn varsity, a tallbike
    Posts
    28
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    most notable effects are obviously gonna be on your tires. but i would guess that most of the other components on your bike can easily withstand the amount of force you are exerting on them while skidding.

  5. #5
    Senior Member
    Join Date
    Apr 2009
    Location
    Colorado Springs
    My Bikes
    Surly Steamroller, Schwinn Continental II
    Posts
    136
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    of course tires. has anybodys components straight up broken or been bent from excesive skidding

  6. #6
    hateful little monkey jim-bob's Avatar
    Join Date
    May 2003
    Location
    oakland, ca
    Posts
    5,274
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Depends. If you're smooth, things last longer. If you beat on the bike, things break faster.

  7. #7
    Senior Member
    Join Date
    Nov 2007
    Posts
    150
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Seat stays.

  8. #8
    Senior Member flam's Avatar
    Join Date
    Nov 2008
    Location
    Philadelphia
    My Bikes
    Mercier Kilo tt
    Posts
    175
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by 2wheelsgood View Post
    your bike will ooze street cred.
    fixed

  9. #9
    Senior Member
    Join Date
    Sep 2008
    Posts
    244
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Skidding exerts no more force on the bike frame than any other strenuous exertion (mashing the pedals for example). It is easier on the seat stays than braking with rim brakes would be. The only thing that takes greater force is the lock ring and the tire due to the fixed pattern (skidding using brakes would spread the wear more evenly.

  10. #10
    Senior Member Thetank's Avatar
    Join Date
    Apr 2008
    Posts
    1,031
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by JackD View Post
    Skidding exerts no more force on the bike frame than any other strenuous exertion (mashing the pedals for example). It is easier on the seat stays than braking with rim brakes would be. The only thing that takes greater force is the lock ring and the tire due to the fixed pattern (skidding using brakes would spread the wear more evenly.
    any way you can prove this or did you pull this out of your @$$?

  11. #11
    Comanche Racing PedallingATX's Avatar
    Join Date
    Feb 2009
    Location
    Deep in the heart of Texas
    My Bikes
    Presto NJS build, Specialized Allez Pro w/ full Dura Ace and Ksyrium SLs, 1990something Specialized Sirrus
    Posts
    2,822
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Thetank View Post
    any way you can prove this or did you pull this out of your @$$?
    I am just going to copy this sentence and paste it into every single thread on BFSSFG.
    skinnytire

  12. #12
    Senior Member prawza's Avatar
    Join Date
    Apr 2008
    Location
    Perth, Australia
    My Bikes
    Avanti ventura, Fuga Track Bike
    Posts
    298
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    stripped threads for ****ty hubs
    Cycle instead

  13. #13
    chickenosaurus j3ffr3y's Avatar
    Join Date
    Sep 2008
    Location
    Boston, MA
    My Bikes
    2010 Motobecane Team Track, 1997 GT Edge, 2012 Kilo TT Stripper
    Posts
    1,189
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by prawza View Post
    stripped threads for ****ty hubs
    99% of the time stripped threads are from improper threading of the cog/lockring or failure to use enough grease.
    2010 Motobecane Team Track
    1997 GT Edge
    2012 Kilo TT Stripper

  14. #14
    Senior Member beeftech's Avatar
    Join Date
    Aug 2008
    Location
    Brooklyn finally.
    My Bikes
    Bianchi San Jose, fixed
    Posts
    832
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Thetank View Post
    any way you can prove this or did you pull this out of your @$$?
    Take some physics lessons, and understand how a bicycle works.

  15. #15
    Senior Member
    Join Date
    Jun 2008
    Location
    Eugene, OR
    My Bikes
    Jamis XLT 2.0, Kona Fire Mountain
    Posts
    564
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I've annihilated a chainring skidding.

  16. #16
    Senior Member
    Join Date
    Sep 2008
    Posts
    244
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Thetank View Post
    any way you can prove this or did you pull this out of your @$$?
    Couple of principles. Skidding tires impart less resistance than rolling tires (basic physics).
    The energy used to resist skidding is provided by your legs. Your legs also supply energy for accelerating your bike. The energy for pedaling forward strongly is the same as the energy available for resisting the motion. Thus no more force is put on the bike while skidding than while stomping on the pedals going forward.

    Further, chain tension created by typical FG is substantially lower than that generated by using a low gear on a mountain bike. Chain tension is inversely proportional to gear inches. Low gear inches mean higher potential for heavy stresses on chain - hub - bottom bracket. The chain tension required to skid a FG bike is less than half of what you would get hillclimbing in a granny gear.

    Seat stays on a fixed gear have only axial stress. Braking instead of skidding adds a load perpendicular to the seat stay. This stress is much tougher on the frame than an axial stress.

    So bottom bracket is experiencing lower forces than typical geared bikes and no different during skidding than when mashing hard. Seat stays have minimal stress. Chain tension on cog and chainring is lower than geared bikes and no different than when mashing.

    The only thing that is stressed more is your inseam as you stretch to impale your balls on your stem.

    This is basic physics people. Think about it.

  17. #17
    UCP
    UCP is offline
    Senior Member
    Join Date
    Apr 2009
    Posts
    220
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by jackd View Post
    this is basic physics people. Think about it.
    but that makes me tired!

  18. #18
    . bbattle's Avatar
    Join Date
    Aug 2005
    Location
    Huntsville, Alabama
    My Bikes
    2014 Trek Domane 5.2, 1985 Pinarello Trevisio, 1991 Colnago Master, '06 Bianchi San Jose, 1987 Moulton Fuso, '80's Gardin Shred?, '82 John Howard(Dave Tesch)
    Posts
    11,622
    Mentioned
    5 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by j3ffr3y View Post
    99% of the time stripped threads are from improper threading of the cog/lockring or failure to use enough grease.
    I'd second that with some improper tightening of the lock ring which could allow the cog to untighten/tighten with every skid, eventually leading to hub thread/lockring failure.

    When installing your cog, grease the threads, carefully start on the threads, then back out slightly to make sure you are aligned on the threads. Tighten pretty well but not gorilla tight. Repeat for lockring.

    Ride the bike around the block. Give it a couple of skids. If you feel any movement at all, time to tighten everything down again; maybe get your girlfriend to help.

    Another test ride; everything should be right as rain.

  19. #19
    Senior Member Yellowbeard's Avatar
    Join Date
    Mar 2009
    Location
    Ontario
    Posts
    735
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    If you skid too hard your chain will stretch and fall off, causing death.
    I'll eat it first.

  20. #20
    Junior Member
    Join Date
    Feb 2008
    Posts
    8
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    headaches, nausea, itchy skin, vaginal bleeding, anal leakage.
    if you experience an erection lasting more than four hours, see your doctor.

  21. #21
    <~>
    Join Date
    Apr 2009
    Location
    MSP
    Posts
    147
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by kikstartmyheart View Post
    headaches, nausea, itchy skin, vaginal bleeding, anal leakage.
    if you experience an erection lasting more than four hours, see your doctor.
    That's not the kind of skidding the poster was talking about!

  22. #22
    Pokemon Master Darth_Firebolt's Avatar
    Join Date
    Dec 2008
    Location
    Arkansas
    My Bikes
    2009 Specialized Rockhopper Comp 29er, 2008 Specialized Hardrock Sport, 2010 Redline Pro 24
    Posts
    794
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Thetank View Post
    any way you can prove this or did you pull this out of your @$$?
    can i use this as part of my sig?

  23. #23
    Bicycle Repair Man !!! Sixty Fiver's Avatar
    Join Date
    Sep 2007
    Location
    YEG
    My Bikes
    See my sig...
    Posts
    25,924
    Mentioned
    14 Post(s)
    Tagged
    2 Thread(s)
    You are stopping the rear wheel via use of your legs which are providing the same action as any rear brake but because you are going to unload the rear wheel to do this you are actually subjecting the bike to less stress.

    A coaster brake would be the closest comparison as you also need to reverse and stop the chain.

    Bikes are designed for this.

    It's hell on tyres though.

  24. #24
    Junior Member
    Join Date
    Jan 2009
    Posts
    12
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    i'm jacking this thread because this seems like a good place to ask my question. and i dont' want to starta new thread. . .

    My rear tire is starting to wear down from the occasional skid. i'm a little broke a the moment and can't afford new tires just yet. would it be a bad idea to switch my front tire with my rear one to wear that one out first before i buy new tires? do any of you do this to save a couple bucks?

  25. #25
    Real Men Ride Ordinaries fuzz2050's Avatar
    Join Date
    Sep 2008
    Posts
    3,637
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by fi3nd666 View Post
    i'm jacking this thread because this seems like a good place to ask my question. and i dont' want to starta new thread. . .

    My rear tire is starting to wear down from the occasional skid. i'm a little broke a the moment and can't afford new tires just yet. would it be a bad idea to switch my front tire with my rear one to wear that one out first before i buy new tires? do any of you do this to save a couple bucks?
    that's a pretty darn lousy idea

    http://www.sheldonbrown.com/tire-rotation.html


    don't worry, you're not the first to have it though, and at least you were smart enough to ask. Better than me the first time, front tires failing unexpectedly on descents can be very bad

Page 1 of 3 123 LastLast

Posting Permissions

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