Those who run open clutches?

Post by **alexanderfoti** » Sat Sep 21, 2013 9:13 am

I rode my diesel bike for the first time I'm a couple of weeks, and after a couple of miles my clutch was very stiff and Either the clutch started slipping.

It has been raining over the last week and I have realised it's probably the lubricant has been washed away! I will be pulling it apart and greasing everything again.

Has anybody had any similair experience?

Anorak_ian · Post by **Anorak_ian** » Wed Jan 15, 2014 9:42 pm

Yes!

Bob Newby clutch by any chance?

Dump the crap open bearing clutches or you will have no end of adjustment and rebuilds.
It's a 1970's design, the real manufacturers changed the design years ago.

Look familiar?

http://www.ebay.co.uk/itm/350975973178? ... 1438.l2649
This is the 3 spring version.

Note the bearing ring, this is worth buying if you do have a Newby clutch. It will stop the bearings bunching up and causing friction, ie clutch drag. Mind you, you'll still have to lube it up, over and over again.

I run an open clutch, but mine has enclosed bearings. A damn good clutch!

Post by **alexanderfoti** » Wed Jan 15, 2014 11:09 pm

It is a Villiers clutch. Can't remember the exact assembly it was from but I have since removed the open roller bearings and had the center turned out and used a sealed bearing in its place.

The problems I was having was from the first steel plate missing it's key hole. Which meant it didn't run concentrically.

All sorted now

Anorak_ian · Post by **Anorak_ian** » Wed Jan 15, 2014 11:22 pm

Lol, I just noticed the date of your first entry.

Post by **Stuart** » Thu Jan 16, 2014 1:25 pm

I've had the BNR clutch off for re-greasing this week. Well, the toothed part is BNR but the back part is homemade and yes, I suspect those bearings bunch up. It's done 4 trips to Hamm & has to be greased up pretty regularly.
I need a sealed unit to slip in there!

Anorak_ian · Post by **Anorak_ian** » Thu Jan 16, 2014 2:51 pm

Crazy, I just remembered I still have my Bob Newby clutch on a shelf in my garage. Been there for years

Well that's one for ebay.

Post by **alexanderfoti** » Thu Jan 16, 2014 10:04 pm

Anorak_ian wrote:Lol, I just noticed the date of your first entry.

Heh

Post by **alexanderfoti** » Thu Jan 16, 2014 10:06 pm

Stuart wrote:I've had the BNR clutch off for re-greasing this week. Well, the toothed part is BNR but the back part is homemade and yes, I suspect those bearings bunch up. It's done 4 trips to Hamm & has to be greased up pretty regularly.
I need a sealed unit to slip in there!

Get a sealed bearing in there. I used a thin wall bearing and haven't had any problems

Anorak_ian · Post by **Anorak_ian** » Thu Jan 16, 2014 10:48 pm

alexanderfoti wrote:
Anorak_ian wrote:Lol, I just noticed the date of your first entry.
Heh

Well it's been a while. If I had noticed the date of your first entry I probably wouldn't have said anything, as you would have no doubt, fixed the problem by now.

Post by **Stuart** » Fri Jan 17, 2014 3:16 pm

alexanderfoti wrote:Get a sealed bearing in there. I used a thin wall bearing and haven't had any problems

Glad you used the term 'thin walled' as I'd never have found them

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