Hello I am wondering what the relation between motor rpms and propeller rpms. I know that once you put the propeller on you are going to lose some of that speed due to drag and weight of the propeller.(adsbygoogle = window.adsbygoogle || []).push({});

Spec.

Battery: 10 Cell /37V

RPM: 231kv

Max current: 80A

Watts: 2960w

No load current: 37V/1.47A

Internal resistance: 0.028 ohm

Pole Count: 24

Weight: 849g

Diameter of shaft: 10mm

Suggested ESC: 120A 10S Compatible

Suggested Prop: 21x13 APC-W

So this shaft maximum rpm would be 231 * 37 = 8500 rpms.

So if I put that prop on that they suggest what would the rpms be of that propeller and how would I go about figuring those numbers out so I can do this for multiple motors. I need to know what the maximum thrust output is to find the most inexpensive motor that has the highest thrust output.

So to sum up is there a mathematical way to figure out the rpms of a propeller with the propeller data and the shaft rpm of the motor so I can calculate the maximum thrust that the motor and prop I choose will put out?

Thanks for the help guys I hope you under stand what I am asking

Peace

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# Calculate Propeller RPM from Motor No Load RPM

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