ADVrider

ADVrider (http://www.advrider.com/forums/index.php)
-   Hacks (http://www.advrider.com/forums/forumdisplay.php?f=56)
-   -   BME leading link pivot bushes (http://www.advrider.com/forums/showthread.php?t=893321)

Jeff 8 06-05-2013 09:05 PM

BME leading link pivot bushes
 
I have a BME leading link, made by Bob Martin Engineering in 2001. Doing my pre Alpine Rally checks, I found play in the swingarm pivot bushes.

Does anyone know if they are commercially available, or will I have to turn them up from a block?

The outer of the brass is 19mm, the inner is 16mm.

Also do the steel inners wear? There are no wear marks on the bolt, but it is not a very tight fit.



http://i1336.photobucket.com/albums/...ps6baec254.jpg

Jeff

:gun2

jaydmc 06-06-2013 07:31 AM

More messurments are needed. How long are they? Do they have a shoulder. If you are in the USA I would check with McMaster Carr as if they are made, chances are they will have them and more often then not when you place an order they arrive the next day.
BTW, on our leading link front ends we run two ball bearings on each side for a total of 4 bearings. Never considered bushings.
Jay G
DMC sidecars
866-638-1793

kshansen 06-06-2013 03:32 PM

I checked at McMaster here:
http://www.mcmaster.com/#standard-me...arings/=n2w0hp

I see that they have 19mm od but those come in 15mm bore
Then there is the 16 mm bore but those come in 20mm od

These are the non-flange types that your's appear in the picture to be.

They also show flange styles but seems id/od are in the same range.

So if you have a lathe or access to one guess you could go either way. Or maybe use those with the correct od and then after pressing them in have them reamed to fit the sleeves.

Jeff 8 06-06-2013 04:53 PM

Thanks for the replies guys. I'm in Australia, forgot it didn't come up on the profile, hence using metric measurements :zilla. The width is 38.5mm and there is no shoulder.

On reassembly I found that the clearance is ok, but the play was actually end play, so don't need the bushes so urgently now and just put some packing to reduce the side to side movement. The front end has done over 120,000 km of hard use and has never had a problem, but being a sidecar racer as well, I know how much load they are under, so check regularly.

Jeff

:gun2

kshansen 06-07-2013 08:52 AM

I figured out the Australia part after I Googled the guy who built the front end!

I'm almost bilingual here in the USA as far as measurements go that is.

If the movement is side play how about having a light cut taken off the side of the inner sleeves? If you were near by I could do it in less time than it takes to type this reply in my old leather belt driven lathe!


Quote:

Originally Posted by Jeff 8 (Post 21585439)
Thanks for the replies guys. I'm in Australia, forgot it didn't come up on the profile, hence using metric measurements :zilla. The width is 38.5mm and there is no shoulder.

On reassembly I found that the clearance is ok, but the play was actually end play, so don't need the bushes so urgently now and just put some packing to reduce the side to side movement. The front end has done over 120,000 km of hard use and has never had a problem, but being a sidecar racer as well, I know how much load they are under, so check regularly.

Jeff

:gun2



Times are GMT -7.   It's 05:55 PM.

Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ADVrider 2011-2014