Wheel Popped out today
#1
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Wheel Popped out today
I was climbing a big hill, engaged my smallest chain ring up front, wheel popped out twice, secound time I ate it. Any thing other then how tight it was in therE?
P.S I have horizontal dropouts.
P.S I have horizontal dropouts.
#2
mechanically sound
The force generated by the gear you were in was large enough to overcome the clamping friction of your rear skewer. I've solved this problem in the past by switching to a closed-cam steel skewer with a steel acorn nut.
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Or, in other words, if you are using a modern skewer in horizontal drops - don't. Go old school.
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72 Frejus (for sale), Holdsworth Record (for sale), special CNC & Gitane Interclub / 74 Italvega NR (for sale) / c80 French / 82 Raleigh Intl MkII f&f (for sale)/ 83 Trek 620 (for sale)/ 84 Bruce Gordon Chinook (for sale)/ 85 Ron Cooper / 87 Centurion IM MV (for sale) / 03 Casati Dardo / 08 BF IRO / 09 Dogma FPX / 09 Giant TCX0 / 10 Vassago Fisticuff
#5
mechanically sound
IIRC Sheldon recommends a steel skewer and a steel acorn nut- which is what bob meant by "old school."
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Bob is correct. You need the "old school" internal cam steel skewer such as Shimano and Campy. External cam, particularly Ti shafted, skewers won't clamp nearly tight enough for use with horizontal dropouts.
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Also, most fixies use a modest gear ratio and are limited to flat to gently rolling terrain so tremendous torque is not applied to the rear wheel by standing in a very low gear. The OP reports his problem occurs in a very low gear under very high effort.
Again, external cam skewers provide significantly less clamping force than internal cam types and wheel slip is a definite possibility under high load conditions.
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