Hello all my first post, I bought an old magna Fixd. Which is basically the thruster from Walmart which looks like it has been pretty popular. Anyways I just got done installing my first motor kit on this bike and it went well, but after a couple days of riding with different mounting methods on the rear spocket I need to get a hub adapter so I don't have to use the rag joint, which I will if all else fails. My question is the hub on the Fixie is not all the same diameter it tapers starting out larger by the spokes and gets smaller towards the center of the hub. Is there a hub adapter that will work with this or do I need to start rigging up that rag joint? Btw if you need to know how I got here I originally mounted to the fixed sprocket which is a bad idea because it doesn't matter if you use the lock ring, go under the fixed spocket weld it to the hub there is not enough metal for the tack weld to last. Please help me motor bike gods!