Moving on now - finally some progress !
I managed to get the top tube / headstock onto the fork yokes on my own - not sure why there wasn't a big disaster, but all OK. Again, this is POC stage and I'm doing this to check out what was in my head - is in reality !
Chuffed - trail and headstock angle as I planned. Scope for adjustment when we have a proper check when my pal brings his laser gizzmos round. I also have scope to alter the wheelbase from 55" - 60" [ if required ] without changing the jig.
Couldn't resist cutting and fitting the tank and dropping in place as a "whatif"...... happy with it, but when the engine is in it's final position [ maybe 5" higher than the attached pix ] the tank might not be cosmetically deep enough. Mainly because I want to hide all the modern squitter under there - coils, ECU, fuel pump, etc.
I also made the final [ CAD ] rear engine plate patterns .............. just before the engine decided to leap off the bench and crash nearly 3 feet to the concrete floor. I feared the worst, but damage was confined to one top fin, which I was able to Araldite back .... good as new. While I had the Araldite out I decided to attache the SU flange [ alloy ] to the copper bend [ house plumbing ! ] ready for it to be silver soldered. Success - all fitted in the correct orientation with the float bowl level and the carb vertical ............ until you go round corners of course !
My pal is coming round to give me a hand to raise the engine into it's postion - he's bringing my scissors engine jack which is currently under the KZ750 Caff Racer [ yes, that's still going ].
Once that's at the correct ride height [ aiming for 7" ground clearance ] we can check out the position for the front downtube and the rear diamond.