Converting scale aircraft to electric is becoming commonplace. Here's a neat trick that solves a simple but perplexing problem often encountered when using a "nitro" spinner on electric-powered models. Many times, there is a problem keeping the prop and spinner aligned on the brushless motor when tightening the prop nut. Glue a disc of sandpaper to the front and back of the spinner backplate and that problem is immediately solved. You can use a 1-inch hole saw to cut the sandpaper discs and CA them to both sides of the spinner backplate.
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