taco eater :
Matt RIPRIP from Largo, FL United States
this carb is ridiculous. I have it on my derbi revoultion. very fast bike. yay. yeah.
things to note:
it has a 175 series needle jet from the factory. that is a four stroke needle jet. You will have a hell of a time getting the partial throttle tuning correct with this needle jet if you're running a piston port. It's not so bad with a reed valve setup but it is still a little big boggy and very rich off the bottom end.
A thing to do is switch it out to a 169 series needle jet which is more idealized for a piston port two stroke.
It uses a TM24 style pilot jet and the same 4/042 6mm main hex mikuni mainjet that the vm20 tm24 use. so that' sgood there.
the footprint and overall size of the carburetor is pretty large as well. It's larger than the tm24 by about 20%. so if you are tight on space this might be the best carburetor for you.
but if you have a 13500 rpm turning 18hp watercooled derbi revolution.... there's really no other option.