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Old Oct 30, 2011, 06:32 PM
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USA, IN, Hobart
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what happens if you under-prop a brushless motor

anyone know what would be the consequences of using a smaller than recommended prop on say a 5055-320kv motor
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Old Oct 30, 2011, 06:34 PM
Team CJ Youngblood
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United States, WV, Wheeling
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Quote:
Originally Posted by flying_rhyno View Post
anyone know what would be the consequences of using a smaller than recommended prop on say a 5055-320kv motor
The motor wouldn't get hot, you would get more flight time, and you wouldn't have as much power as if you used the recommended prop size
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Old Oct 30, 2011, 06:35 PM
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any experts out there on propping motors???

when is it favorable to use 3 or 4 bladed props
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Old Oct 30, 2011, 06:37 PM
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Smaller prop just means you will draw less current.
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Old Oct 30, 2011, 06:40 PM
Barefoot Birkinsomething
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United States, KS, Overland Park
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Quote:
Originally Posted by flying_rhyno View Post
when is it favorable to use 3 or 4 bladed props
in rc, the only advantage to multi blade props are ground clearance and looks. they are extremely inefficient in small sizes (read rc as compared to full scale)
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Old Oct 30, 2011, 07:00 PM
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thanks everyone. Birk what do you mean by "read rc as compared to full scale? thanks
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Old Oct 30, 2011, 07:45 PM
Barefoot Birkinsomething
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just meant that on a full scale, the multi blade props all contribute to thrust, but on small scale stuff, the extra blades just get in the wake of the other blades and dont do as much
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Old Oct 31, 2011, 08:26 AM
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I see no disavantage as long as the plane flies the way you want it to.

On the plus side, everything runs cooler for more duration with less stress on the ESC, BATTERY, and MOTOR which can result in longer component life.

Roger aka GIFLYRC
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