Thanks Norm. Danny at 3D claims it will handle tons of power. I know it will do better on a larger 4 stroke than my little motor. Mine doesn't have the torque of a larger engine, lots of clutch slippage until enough speed is built up to fully engage it. I end up duplicating what my expensive go kart centrifugal clutch does plus total control over more slippage if you need it. There's videos of it on mini bikes and go karts up in the 40 + hp range, but it looked like a 3 disc unit on the most powerful kart. It took me some time to realize why it's hard to get used to. The clutch engagement mechanism is so efficient, you can pull the lever with your pinky. Huge mechanical advantage. I would like to have more feel to it, like maybe stronger springs. That would probably give me the feedback to let me have a better sense of exactly where the engagement begins without releasing it too fast and killing the motor. I have to slip it on every slow down and turn, where a bigger motor would just torque up without disengaging.
Overall I love it and will be going to Donut Derelicts in the morning to give it a good test. Greg and I are putting one on a Briggs bike, but it will be a while before it's rideable. 3D gives great service, fast delivery and good support at very reasonable prices. I highly recommend their clutches.
