As far as engine works and fires, I go to the next step and disassemble the carbs, swap COP on front cylinder too (it was easy to strobe ign advance on original coil with cables) and start to put the throttle bodies. I sourced new rubber intake boots (vtr is 54mm and Vara needs 52mm) and this evening I pushed Vara throttles on (it's a fight you know).
The cables are ok, but the airbox don't fit. Vara airbox is a little bit bigger and main problem is that hit strut bar between frame. The material of airbox is PP and now researching if can be soldered. The plan is to trim the airbox, cut crankcase ventilation and move it out of box and plug some hose and openings too....if material is not solderble, I'll make some spacer...which is not so simple...you know angled surfaces, projections of bolt holes will move in new position...but small problem.
Still not sure how I'll make Idle cirquit. Stepper motor bipolar ,can't be driven thru this ECU. Probably I'll try to source small PWM solenoid and to implement it instead of stepper.
I work on other problem too...fuel delivery. I'll plan to buy Vara pump (china knock off) and make small container with build in FPR ..return-less system. The plan is to placed the pump unit over rear cylinder on place of original shut-off valve. The major problem I see, is how to safely seal pump power supplay out of container ...probably I'll glue/epoxy two pins...to epoxy/glue cables is not good idea as far as fuel can 'escape' between wire and insulation. I hope I'll not explode
The rest is just tuning and when the sun comes again ..final adjustments.
Unfortunately I receive signals from space and start working again on Cagiva 750 and old Ducati monster 600 too. I always want mono swing on Ducati, but with spokes. There is some companies (KINEO) that make custom spoke wheels...but this is way of my budget. So I bought 10kg round pieces of 2017 Dural, and turn it into 3 kg spoke hub...this produced maybe 1 cubic meter of aluminium 'waste'
. I have some expiriance with making spoke wheels and usually design hub to hold cheep spokes , as far as custom spoke lenght is too expensive
So clasic spoke wheel, but with integrated drum brake...I'll make a pictures. I faced some space issues and now I am in process of making smallest brake cylinder possible (hydraulic actuated drum brake on bike
)Of course some family trouble when I used oven to heat up hub in order to put iron insert for brake drum
