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.

Front Wheel Rim Lock Positioning

Featured Replies

I need to drill a hole in the rim of the front wheel for the rim lock, how do I work out exactly where to drill it?

I've been told the correct position is four spoke gaps behind the tube valve in the direction of forward travel of the wheel, thoughts please gents.

Did the person who told you give you a valid reason for this position or just give a sage like nod? I cant see that it makes any difference how far from the valve it is, as long as it is between two diverging spokes.

I thought most are not quite opposite the valve. Have a look at at few pictures.

Not quite opposite on a 36 spoke wheel, dead opposite on a 32 spoke wheel. I have a brand new (36 hole) Morad rim sitting next to me which came with the rim lock hole already drilled; not quite opposite the valve hole.

It's normal practice to put it (if only using one) as near directly opposite the valve as possible to reduce the effect on wheel balance (these things aren't just used on trials bikes before someone says the balance does not matter - but I have known people balance wheels on trials bikes).

  • Author

Thanks all, much appreciated............

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.