I have some APC multi-rotor props 13x4.5 on a 6S tarot 690 hex with 420kv motors. Im using the threaded prop adapter hub, instead of the other bolt on type prop. The APC seemed to have the best efficiency I could find in an affordable prop. Unfortunately it doesn't look like they make the bolt on type prop.
I heard the props slipping on the motor on fast movements. Pulled the props off and see that there is some slip ware on the bottom of the prop, pictures attached.
I had them torqued down really good and feel like I need to incorporate some sort of lock washer into this, or else shop for bolt on type props. Any suggestions?
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