Cup and Cone Adjustment Issue
11-01-20, 08:54 PM
#1
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Cup and Cone Adjustment Issue
New to this, trying myself the first time. A Shimano rear hub. The drive side is locked down. I tighten the non-drive side cone by hand so there is just a little axle play left. Everytime I hold it in place with a cone wrench and then tighten the locknut, the cone is too loose again, like by a significant amount. Any idea what I am doing wrong?
Chris
Chris
11-01-20, 09:06 PM
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Two wrenches on NDS. One for cone, one for locknut. It takes a while to get it right. I find that holding the NDS cone in place, backing off NDS locknut, and turning axle on the DS with my fingers makes it easier to dial it in.
John
John
11-01-20, 09:18 PM
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https://www.sheldonbrown.com/cone-adjustment.html
https://www.sheldonbrown.com/tooltips/hubs.html
An axle vise like this simplifies getting quick-release hubs adjusted corrrectly: https://www.steintool.com/portfolio-...ub-axle-vises/
https://www.sheldonbrown.com/tooltips/hubs.html
An axle vise like this simplifies getting quick-release hubs adjusted corrrectly: https://www.steintool.com/portfolio-...ub-axle-vises/
11-01-20, 10:27 PM
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It's hard to get perfect just doing the cone and locknut. Easier is to get the cone nearly perfect snug the lock nut to it and then use a pair of 17mm wrenches to snug the locknuts towards each other which will also tighten against the cone in the process, once the cone feels perfect finish tightening the cone and locknut together and double check that it still spins with no play.
11-02-20, 07:10 AM
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When using two wrenches, the ends of the wrenches shouldn't move more than a few mm to get exact adjustment.
11-04-20, 04:08 PM
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...what works regularly for me (for many years now), is to loosely tighten the lock nuts down on both sides with the cones too tight (i.e. you can feel some roughness when the wheel turns on the axle). Then I carefully fit two cone wrenches onto the cone flats, and using a significant force, back one or the other cone out, tightening them further against the lock nuts. But sometimes you need to fiddle with this adjustment, like any other bearing adjustment, it does not go exactly right on the first try 100% of the time.
...what works regularly for me (for many years now), is to loosely tighten the lock nuts down on both sides with the cones too tight (i.e. you can feel some roughness when the wheel turns on the axle). Then I carefully fit two cone wrenches onto the cone flats, and using a significant force, back one or the other cone out, tightening them further against the lock nuts. But sometimes you need to fiddle with this adjustment, like any other bearing adjustment, it does not go exactly right on the first try 100% of the time.
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