Does anybody know the length of the single AMC ES2 gearbox mainsheet length. A distance over the end splines will do. I know there shorter than the Dommi twins but they all look the same without one agains the other. Cheers Tony
The race versions (Manx, 7R etc) did have shorter shafts, but the road models just spaced their gearbox etc so it all lined up. In preAMC days, the engine sprockets came in a variety of offsets. You had to be sure to select the variety that suited your setup, so the chains/sprockets lined up.
I found there are 4 different mainshaft lengths. The Commando with circlip grove, The Dommi and single, Manx and finaly 7R /G50 being the shortest. I found the G50 one to be the one with belt drive and Newby clutch on the ES2.
The head is off the 350 M50 much modified. The ex valve is to big on the ES2. The barrel is one of my own. I had patterns made in the early 90's which I made many ES2 and M50 barrels. Mike Pemberton had many off me and eventually I sold the patterns to him. The bore and stroke are 86 x 86 with a Weslake rod. and race cams. It's just a road bike but I am just using bits up I have had for years. I know the bike you are talking about but can't remember the guys name. He came to see me years ago while he was in the UK