After reinstalling the repaired gearbox I have the FE up to 75MPG
In the gearbox I changed the ratios slightly. First gear is now identical to standard Burgman (18.3 km per 1000 rpm). Second gear is now 25 km per 1000 rpm. And ofcourse if you followed the previous posts the overrunning clutch is in.
Above the first tanks after the rebuild. This is still without any hypermiling.
One of the things to do next is a gasoline measurement system on the carburettor. I have ordered a small Swiss flowmeter. The electronics is worked on to give a readout on a display during riding.This step is needed to see the effect of small changings to the aerodynamics of the bike as well as to find out what the best gearshift speed is based on FE.