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I have been thinking about the larger gear and I had made it so that the cam is part of the Cast Iron but I think I will make the cam separately in Silver steel and harden it before fitting it to the gear.Jo
Whilst we're on the subject of pushrod, are you going to try the improved method of exhaust valve operation? The drawing shows the nearest valve to the pushrod being operated, at the time I used a fabricated carburettor that screwed into the side face of the cylinder head with the exhaust coming out below. Well....I found that the engines vibration shook loose the non return valve and before fuel got back to the jet it would stop. My improvement was the little Iron casting for a " tank top " carburettor that entered from below and the exhaust left through the side. The only difference is that the rocker arm is bent and extended over the atmospheric inlet valve. This single change, to my mind made the R.L.E. look far nicer than previously.Cheers Graham.