Here is a pic of the clutch used with the gasbike.net. This kit uses the tapered shaft, which does not bother me. Like I said, it doesn't engage until 4400 rpm. But I get no shudder at all even on accel from dead stop. Although with my current gearing if I didn't pedal from a stop, a turtle would beat me for the first couple hundred feet. And to correct my post, I am running a 48t rear sprocket. Forgot I changed out wheels, and the 48t was already on this wheel. Seems to be gaining a little more power (breaking in) but pedaling on decent grade hills is required. I believe I will be trying a little larger rear sprocket for more hill climbing capability. I can afford to give up top speed because it is already too fast for me now, and I haven't gotten past 6500 rpm (28 mph). How do you guys do it, especially the 40 mph club guys. All I can think of at the higher speeds is what if something breaks or someone comes out in front of me. I think 25 mph on a Wally World bike would be my limit.