Broken Bike Bits
See also also bike pic
for other bike-related technical discussions and more failed parts.
Axle —
Bottom Bracket —
Brake —
Cable, Housing, and Stop —
Chain —
Chainring —
Crank —
Fork —
Frame —
Handlebar —
Headset —
Hub —
Nipple —
Pedal —
Rim —
Seat —
Seatpost —
Spoke —
Sprocket —
Stem —
- First page -- Aluminum axle fails at bearing shoulder.
- From the collection of Ric Hjertberg.
- Welded tubular steel failure, Bullseye
- Welded steel failure, Tioga Revolver
- Split along square taper, Campagnolo
- Non-failed Sweet Wings crank
- Carbon crank fails parallel to chain line, Colnago
- Vintage crank failures, aluminum Campagnolo
- Failure away from features, Dura-Ace
- Race Face arm failure away from features
- Failure at pedal eye, newer Campagnolo Super Record
- Crack at spider/arm transition, Cannondale Coda ``Magic''
- Arm failure at pedal eye, older Campagnolo
- Arm failure at pedal eye,
older Shimano Dura-Ace, replacement with Jobst Brandt collet
- Arm failure at square taper, late 1990's Topline
- Square taper failure, Grafton Joystix
- Separation at glue line, hollow CODA/Magic
- Middle of arm, Campagnolo c. 2002
- Hollow crank failure at end of hollow section
- Pedal eye failure despite use of pedal washer
- Arm failure at square taper, Topline
- Arm failure at end of
groove, partial failure both arm/spider transitions; 1970's
Campagnolo
- Failed Sweet Wings spider
- 1970's crank failures: T.A., Stronglight, 2x Campagnolo.
- CODA Magic hollow crank separation at glue line
- Tubular steel crank failure at pedal eye, Bullseye
- Two crank failures,
one rider: Race Face Isis Turbine LP,
Race Face Next LP
- Crank failure,
C-section arm
- Crank failure, hollow arm
- Crank failure, left-side square taper, away from crank
- Crank failure, at pedal eye
- Truvative Styleo Team, near spider
- Failure at spider/crank transition
- Presumed failure at spider/crank transition
- Bontrager aluminum crank failure in rounded section
- Failures of three "vintage" cranks of unknown history
- Campagnolo "Grand Sport" failed near pedal eye
- T.A. crank failed on vanity groove near spindle
- First page -- down tube buckles at center while braking
- Second page -- failure at weld
- Third page -- failure in a crash
- Fourth page -- failure long
seatpost/short insertion
- Fifth page -- seat stay failure, steel frame
- Sixth page -- dropout/stay failure, steel frame
- Seventh page -- dropout/stay failure, aluminum frame
- Eighth page -- four dropout/stay failures,
one rider, steel frames
- Ninth page -- dropout failure, aluminum frame
- Tenth page -- seat tube/bottom bracket
failure, steel frame.
- Eleventh page -- dropout failure, steel frame;
seat tube/bottom bracket failure, aluminum frame.
- Twelfth page -- bottom bracket seat/down
tube failure, titainum frame.
- Thirteenth page -- down tube failure near
head tube, steel frame.
- Fourteenth page -- removable derailleur hangar
failure.
- Fifteenth page -- head tube separation
after a crash.
- Sixteenth page -- swingarm separation at weld.
- Seventeenth page -- frame break at dropout, then bottom bracket.
- Eighteenth page -- right chainstay failed at dropout, aluminum frame.
- Nineteenth page -- plastic reflector pierces carbon-fiber frame's chainstay.
- Twentieth page -- left dropout failures with 700C wheels, Rohloff Speedub, and disk brakes.
- Twenty-first page -- left eyelet broke --
off, probably from bent rack.
- First page -- first-generation R-Sys failures after accidents; notable for the severity of the failures
- Second page -- second-generation R-Sys failure
- Third page -- Mavic R-Sys rear wheel spoke failure