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.

Bantam Primary Drive Gearing

Featured Replies

Hi, Ive just geared my Bantam down using a new engine sprocket. Does anyone have any idea what to do with the chain tension? I cant quite take a link out (its too much) so Im looking at making a tensioner.

Does anyone else have similar experience? I used the 14T sprocket.

many thanks for any help.

cheers

Stu :banana2::guinness:

  • Author

Can you get half links for your primary chain ?

Not sure, guess that would be the easiest option. The chain is 3/8 X 7/32.

  • Author

Not sure, guess that would be the easiest option. The chain is 3/8 X 7/32.

Got 'half link' from sprockets unlimited.

If its still a little loose I saw this simple idea a while ago :thumbup:

primary%20chain%20tensioner.jpg

Was thinking of making one similar for mine

  • Author

If its still a little loose I saw this simple idea a while ago :thumbup:

primary%20chain%20tensioner.jpg

Was thinking of making one similar for mine

Yep, looks good, I made a similar thing for mine but with a support plate on the outside too. Seems to work well enough although I used ptfe for the 'rubbing bit' and maybe wear will be quick.

Since doing this, I have see this on ebay - this would've saved a lot of trouble...for

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.