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Nov 15, 2019, 08:33 AM
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RCX Hobby BE0905 10,000kv on the test stand

The motor only just bolts up to the test stand .

1s tests , I record thrust VIA the stand and RPM VIA the GT power tach .
2s tests are through the stand ...

I started with the smallest prop that would bolt to the motor , my 65mm prop .

1s - 65mm - 24,600 rpm for 42 grams of thrust
2s - 65mm - 36,000+ rpm for 108 grams of thrust ( motor is getting warm , but not so much as to burn ) 6.7A / 51W

The data sheet shows a 3020 prop

1s - 3020 - 19,000+ rpm for 46 grams of thrust
2s - 3020 - I was very gentle in adding power to see if the motor would cook ..
Around 2A the motor was starting to really warm up ...
I got brave and pushed the motor to 5A for only about two seconds and the motor got finger burning hot ...
No I didn't kill the motor , it lives !
But obviously 3020 is just too much for this motor with 2s ... ( I had to try as it's on the data sheet )
I would run that little 65mm prop 2s , or maybe a smaller 3 blade .. ( dont have any right now ) ...

Wow , 108 grams of thrust for a small 0905 ... Even 1s was not horrible ..
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