Hi everybody, this is my first post, I have had my motorized bike (the third one I've built) for a few weeks and I have been running with no chain tensioner but the chain keeps coming loose. I came up with this tensioner from parts just hanging around my garage, the only thing I had to buy was the spring. The clamp is from the rear mont of my old motor, two long bolts hold it on. The arm with the pulley is an old motor mount I made, the pulley is from a scrapped derailleur. Works GREAT so far!!!
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