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Old 07-10-09, 08:03 PM   #1
MJH100
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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.
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Old 07-10-09, 08:23 PM   #2
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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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Old 07-10-09, 09:57 PM   #3
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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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Old 07-11-09, 12:14 AM   #4
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yo

'thats not what sheldon says'
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Old 07-11-09, 12:17 PM   #5
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IIRC Sheldon recommends a steel skewer and a steel acorn nut- which is what bob meant by "old school."
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Old 07-11-09, 01:12 PM   #6
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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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Old 07-11-09, 01:45 PM   #7
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sheldon has many photos of him using a modern skewer with a fixed gear.
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Old 07-11-09, 03:00 PM   #8
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Originally Posted by RonaldHaines100 View Post
sheldon has many photos of him using a modern skewer with a fixed gear.
This will work if you use a frame with vertical dropouts and find a fortuitous cog/chainring combination that gives the correct chain tension.

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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Old 07-11-09, 06:35 PM   #9
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so i can get a skewer with track-nuts? and just put it in the axle? cuz I would do that.
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Old 07-11-09, 06:52 PM   #10
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so i can get a skewer with track-nuts? and just put it in the axle? cuz I would do that.
No, a qr axle is hollow and short while a nutted axle is solid and much longer. A qr axle is much too short to take nuts.
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