Jump to content

seedoubleyou

Ossa Mar Front Brake Plate

Recommended Posts

I've had a bit of a disaster this afternoon. Putting the finishing touches to my fresh OSSA MAR restoration and as I was adjusting the front brake cable the threaded post snapped off on one side. So can any wise folks tell me what other models used the same brake plate as I can't find anything on eBay.  Thanks

Share this post


Link to post
Share on other sites
 

 

They were only fitted to the MAR or Explorer (which was just a geared up MAR)

 

As above you can get a weld repair. It doesn't have to be threaded as the threaded cable adjuster has a locknut which can be used to set the position of the adjuster in the post.

 

Or you can grind it right off and fit a Bultaco type front brake cable holder which bolts onto the torque arm on the Bultaco. It just needs a hole drilled in the brakeplate to locate it  -  but I'd opt for the welded repair if you can find someone to do it.

 

You also need to watch the rear brake plate as the alloy casting isn't that strong and if you apply the brake hard the pressure on the slot on the brake plate can snap the top side off meaning the plate will no longer locate on the lug on the inside of the swingarm.  This usually happens because the slot in the brake plate opens up slightly with use over the years which means it is a loose fit on the lug. If you find you have play in the fit of the slot on the lug you can add metal to the lug on the swingarm with weld and then dress to size, or if you can't weld, get some thin sheet alloy or tin and wedge it in to take up any play.

Share this post


Link to post
Share on other sites
 
 

It also helps if the brake is centralised before fully tightening the wheel, spin wheel then apply the brake, keep brake on and tighten spindle nut.

  • Like 1

Share this post


Link to post
Share on other sites
 

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...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...

×
×
  • Create New...