well today I got angry with power tools[>:]

Seeing as the original coil mount was now no good I stripped the engine to remove all metal that is not needed. This included the lower crankcase which every bit possible was cut/powerfiled off, and the cylinder which I mounted in the lathe and turned all the draft off the top 5 fins with a rounded off parting tool. I left nothing it did not need! I also cut the transfer passages in the piston under the gudgeon pin area. I also wanted the weight and complexity of the throttle bellcrank off so I made a new inlet manifold to turn the carb about 50 degrees round to allow direct connection of the throttle snake to the throttle am on the carb.

Total weight of the new glow or elec ign version, including exhuast, prop adaptor, carb, bellmouth, mount and all bolts is 1220 grams. Add 166 grams for 2 3000 NiMh cells for onboard glow and its pretty light!

I've put the pics on so you can see, I'll test it tomorrow hopefully. I need to sort out the carb pressures too but need to make a test gauge first!

Cheers,
Rich