my flying buddy ran one 2 summers ago on a carden 300. He paid to have it changed over to C & H int. He dropped almost a lbs doing this. "From here it turned a 26 x 10 Menz at 6300 RPM. Under the cowl you would never have known it was not a 3W as it pulled unlimted his 28 lbs old carden. I would pick up one if the price was very low as my buddy spent about 200.00 to convert it over to c and h. The motor did not shake or rattle very smooth running motor.