Has anyone managed to fit a belt drive primary to an AJS M16? I'm looking at trying to fit a Bob Newby product but not sure that the width of the cover is large enough to take the belt.

Does anyone know where I might get a slightly wider cover?

Are there any other products out there for this conversion to the M16?

Thanks

A friend of mine has done it using the Burman clutch and gearbox.

He had to fabricate a much wider primary chaincase from aluminium making it vulnerable to being thumped but he seems happy with the result.

Thanks, do you know what type of belt drive your mate used?

I was thinking about modifying the inner cover, to make it wider by say 1 cm I think it would be neater job rather than changing the outer. The challenge will be to get a good seal :-(

Hi Wallo

I've asked what make he used but he made it up himself.

He has said however that if he were to build another AMC special, he would stick to the chain for 2 reasons.

1. In order to keep the width down. He reckons it adds 15 to 20mm.

2. In addition, the overall gearing with the available engine sprockets is too high and he has to put up with a very large rear wheel sprocket.

Might be ok for a road bike, but is it worth it on an old trials iron?

Good luck

Thanks, do you know what type of belt drive your mate used?

I was thinking about modifying the inner cover, to make it wider by say 1 cm I think it would be neater job rather than changing the outer. The challenge will be to get a good seal :-(

Why are you worried about a good seal? What's going to get out?

I just want it to be neat and tidy, I'm a bit of a percy pencil case :-(

I've now dropped this idea mainly because of the extra width, but thanks for everyone's advice.

Next idea being formulated already, but related to a bespoke air box for the AJS to fill the big gap under the saddle, as the oil tank now sits on top of the engine, any ideas from anyone?

I thought I saw one belt drive that was pretty thin. I think the belt was about an inch wide. Is that what you were looking at?