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Hi, as far as i know there is no difference in the motor part for this mopeds, both 5 gear standard tomos motor. if there is a difference it must be in the porting or used cylinder/piston. so if you are thinking about changing parts, change piston and cylinder together, nu brake in period required too:). if you want some performance, put on a 17mm carb, big ports, and clean exhaust and they spin about 100km /h . peter Staal > > What is the physical diference between ATX and BT50 engines? > Bore / stroke ratio is the same, so is it possible (as I heard recently) > to just install BT50's piston in ATX and get ATX with BT performance? > (max speed 80 km/h, 4 kW at 8500 rpm and torque of 5 Nm at 7500 rpm) > Or do I still need to install complete new engine. What about the fuel > flow and exhaust? > > I know it is easier to get BT instead, but ATX is the most beautiful > little bike I ever saw, I feel more comfortable with its suspension then > with BT's and I like its off-road capabilities (no matter how limited). > Pitty ATX have so wussy engine. > > And I know that high rpm-engines are not suitable for off-road riding, > but if I wanted to climb stairs with my bike, I would go after 750cc > enduro :) > > Please help if you can, I am already offered a beautiful MZ ETZ 251 with > oil pump and disc brakes, so temptation is heavy. :) > > -- > PGP keys available via keyservers, finger or at www.rcub.bg.ac.yu/~lupusy > Both keys are under the same UserID > mailing list. > Groetjes, Peter Staal (web based email)
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