On a 64dp pinion the teeth are closer and smaller, and have very little give so if you have a bit to much slack between the pinion and spur it has a high chance of breaking but is a little bit smoother, on the other hand, on a 48dp it has more give, perfect for offroad but not quite as smooth.
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B4 5.5 L4 19T RC18t Mamba 9200Kv
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