Those were great little bikes...
...and if all ya got go with it.
I had the RV 90 beat the tar out of it, but I'm interested in seeing how many MPGs you could get even in stock form. I do know the tires are very hard to find replacements.
Wondering if you could retro fit rims tires from the TS/TC 90 which had skinnier dirt knobbies you could replace with road tires, that would be a start to getting more MPG cause the stock RVs were for off road use being big and soft.
So please keep us posted
Geomoto