Skip to content
View in the app

A better way to browse. Learn more.

Trials Central

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

Rear Wheel Bearing Life?

Featured Replies

" it should not matter how tight you do up the wheel nuts as this will not load the bearings "

Actually you would be quite surprised how much distortion there is when a bolt is tightened, anyone who has tried to unscrew a fork cab before loosening the triple clamp will attest to this, it won't even budge, and that's a hard steel tube squeezed by a couple of 6mm bolts

the only reason a bolt will tighten is because the threads stretch and lock into the nut, etc etc

So yes the spacer will compress if over torqued and side load the bearing

This means more torque as a compression force can be applied to the threads of the axle than the alloy spacer can cope with. The hard steel races are forced hard against the soft alloy spacer in the hub and will squash it longitudinally.

Bottom line - don't over tighten your axle nut!

Edited by pindie

Totally agree with paul w. I have seem quite a few spacers shorter than they should be. They are too soft and have too little diameter to properly support the inner bearing race.

Cheers

This is why we have torque specs and torque wenches.

I used to hear the saying "tighten it as tight as it will go then one more round". That was my Dads philosophy and he broke a lot of bolts.

This is why we have torque specs and torque wenches.

I used to hear the saying "tighten it as tight as it will go then one more round". That was my Dads philosophy and he broke a lot of bolts.

True. It's the same at the front axle, which is usually overtightened as the rider does not realize the axle pinch bolts secure the axle, not how tight it's screwed in.

Jon

Always rub the threads with a dab of coppa slip also.

Torque is king - get a measure for it!

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

Account

Navigation

Search

Search

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.