Okay, I didn't do this to lighten it and I doubt it will run any better with less weight. If you've read back a ways you'll see pics of what the stock flywheel looked like. Without the ugly shrouds covering it, it was a spinning cheese grater! The fins are needed for weight but for cooling they are now useless, ugly, and scary. It was also dangerously close to my right shin - or where I suspect my shin will reside. They had to go. Here's what I cut off. I then turned the remainder down on the lathe. One day out in the winter weather will make the freshly machined surface look like the rest. Here it is back on the motor. Notice how much narrower the motor appears now. The jackshaft visible in this shot has not been shortened yet. I'm waiting for the wheels to arrive before I decide which side to drive it from. I have a feeling it will be right side drive but, if so, the sprocket will obviously be much closer in than it appears now. Measure twice - cut once. Music of the day: Never got to see them live but these guys were/are always the real deal and always sound good live.