Single Turnigy SK3 speed vs Dual SK3

Thanks for your help, I’ve decided to go with the turnigy 190kv 6374 and the enertion motor mount that comes with a key… I’m gonna borrow a dremel.

How do we find out efficiency I want to calculate my 192kv sk3 turnigy %

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Thank you for posting a question instead of creating a new topic. I’ve usually left it at 85% and gotten reasonably accurate top speed calculations.

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Old thread i know, but as someone else revived it… there is no reason at to grind flats on motor shafts, just use retaining compound, its what its designed for.