No shocks, but I put a strut in that tells me a 12″ shock would be just about right. I sat on the frame rails and did some S-turns down my slightly inclined driveway, until I remembered that I don’t have any brakes.
Because the Yamaha hub uses a 17mm axle, and the Benelli swingarm can only accept a 16mm axle, I had to reduce the diameter of the rear axle on both ends to fit in the swingarm. The Benelli swingarm fortunately has horizontal drop-outs at the back, or this method wouldn’t work. The chain adjusters still need to go over the axle at both ends, however, so I had to cut off the hex head on the axle and tap that end, effectively turning it into a long threaded rod. Thus, I needed a castellated nut on each end. Those showed up in the mail today, and I was finally able to bolt the rear wheel on securely.
Once the wheel was in place with the chain adjusters positioned nearly as far forward as possible, I discovered that the sprocket just clears the swingarm. I also discovered that the sprocket bolts didn’t clear it. My first inclination was to look for lower profile button head or countersunk hex socket screws, I couldn’t find any in M10 x 1.25. I finally found some titanium rotor bolts on Amazon, but they will take a couple weeks to arrive. In the mean time, I simply put the flanged hex bolts in the lathe and lowered their profiles myself.