Many thanks Andy. Am going to have a go at taking the flywheel off at the weekend and will take a picture of the roll pin. It looks like there is a sleeve or spacer behind the pulley and the roll pin would lock it in place. The first numbers on the crankcase are 2AH, which I think means it’s a 2A manufactured in 1951. But the H is higher than the 2A and missing the bottom right leg of the font. Will take a picture of that too. Could you please confirm that the aluminium pulley will be attached to the slotted steel bolt. So all I have to do is lock the engine and undo the bolt. Have a Warrington hammer that fits perfectly inside the slot, so just need to keep it in really tight and turn. Have an attachment to a slide hammer puller that has 4 slots in it, so bolts at both 120 degrees and 180 degrees can fit. It was in the back of my mind I had something buried in a toolbox that would work and just found it yesterday after a rummage. Think in the first instance am going to try to use it as it is similar to JAP’s specialist puller. Did not know it was a straight shaft and key, was under the impression it was a taper shaft. Great to get that info too.
It looks like the engine was supplied to Alcon painted in red oxide and Alcon then covered everything in lime green. The inside of the cowling still has the red oxide paint on it. It does not look like it’s done much work and been kept in the dry, so will be a little surprised if the coil is duff. But until I get the flywheel off and test at the pickup, I will not know. Am actually not bothered if it is as I have been waiting to put an external single wire energy transfer coil onto such an engine. Know the theory, but have not put it into practice and this little JAP is an ideal candidate. Mocked up the coil I have yesterday and it will fit at the end of the fuel tank. Will keep you posted how I get on, but I will not be doing the full overhaul in one hit. Summer is the growing season when I use my machines, winter is tinkering time.
Best wishes and thanks again,
Grahame
