Re: Found a premade spring chain tensioner for sale
I tried one once and it doesn't work very well. When you are coasting, the tight part of the chain is on the bottom and the top goes slack. So when you give it gas, the chain slopps around a lot feeding into the engine sprocket and it can jam in there. Not good. This caused my back wheel to lock up at about 30mph going down a hill. I didn't crash or anything but it could have been worse.
Now that I think about it, if you were using the HD wheel with a freewheel in the back it shouldn't cause any problems.
I don't remember where I got that tensioner, but it was only about $30.