Any one into karting, will agree that a sealed engine formula really does work. Costs are kept to a minimum, and to be fair no real mechanical advantage can be gained, other than basic chassis set up etc...
Perhaps Steve-e this may warrant another thread or poll. I personally would go with something like 650 single, perhaps KTM or similar, no internal mods - just pipe and filter changes?????????
60 BHP ish I reckon, then add something like road legal tyres, similar to that used on our outfits at present. So no worries about changing wheels etc during meetings if the weather changes...
MMMM......I like the sound of these....

Jan.