Scooterotica

running a monza 225 with 35mm tmx,dev tour.thinking of droping down to a 30mm delly anybody any idea of what kind of power drop i can expect,if any.

Sticking my neck out here, but i would hazard a guess you might even gain some power albeit at lower revs, may lose a little at top though but not massive.
Is it the flat slide vhsh you are thinking off? Can recommend them highly

carbon lammy wrote:running a monza 225 with 35mm tmx,dev tour.thinking of droping down to a 30mm delly anybody any idea of what kind of power drop i can expect,if any.

Mine,s a different set up to yours but it may be of some use to you as regarding dropping carb size, RB230, TMX35, Franspeed pipe, i dropped to a TMX30pj and havent lost any BHP or Torque [been dyno,d] but i havent gain,d any more MPG either, it does 50 MPG no matter what. Nicer ride with the smaller carb as there,s more adjustments than on the 35mm .

Again,on a different set up RB20 jl3 dropped from a 35tmx to a 30 phbh didnt notice much differene except in mpg

I wouldn't expect you to lose any power. To be fair most roadgoing set ups make nearly as much power at 1/2 throttle as full with a TMX.