Got a new spinner off ebay. The backing plate is aluminum so its thinner (more thread on the prop nut), lighter by 3 grams, bigger cutouts for more prop variety, and should help dissipate the heat a little better. The problem with the Dubro 1.5" spinner is that the backing plate is much thicker ( couldn't get any threads on my previous 2205 motors) and the nut inserts stick below the mating surface to the motor so they would hit 1st and you would need a washer.
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