He said he had recently helped out a guy who had made a powerful V twin Enfield by supplying a better chain. His now much more torquey engine was eating through primary chains like nobody's business but the problem was solved after fitting a duplex Deutz chain.
He showed me the larger pins and centre links on an example he had & went on to say they will quite possibly outlast the engine. They are also able to be routed through much tighter curves that you would expect on the return route but can only be ordered with an even amount of links of course. Enfield chains are 06B2 (or 3/8).
Check him out:
http://www.the-chain-man.co.uk
I asked him about increasing my primary sprocket size and he went on to tell me that any bearing supplier could supplier a 'platewheel', press fit & weld them over an existing cog after first machining the teeth from it. It's a common request as you might expect.
So I'm going to source at 06B2-35 duplex Platewheel.
My Enfield has the original engine sprocket 29T & clutch 56T. Ok if you've got the RPM supplied by a petrol engine but not by a diesel! Anyway, anything from about 34T or 35T primary will get me the cruising speed I require, 35 giving a longer pull away in first which some may not fancy. This through a four speed box of course.
In addition, Hitchcocks have advised me they supply a five plate upgrade for the clutch I have saying most run them with the standard 3 soft & 3 harder springs. ATF is the fluid they recommend for the primary chain case as it is very thin. If anything thicker has been used then existing clutch plates should be cleaned with a good degreaser.
