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Prop size?

Old 01-17-2009, 11:30 AM
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TedMo
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Default Prop size?

What is the proper method to determine proper size prop for a specific motor/ plane? I have an Astro wattmeter to use for this. I assume this would also be contingent on no. of cells in pack? I have not been getting much flight times and have ruined several packs by flying till cut-off.
Old 01-17-2009, 10:27 PM
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Dr Kiwi
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Default RE: Prop size?


ORIGINAL: TedMo

What is the proper method to determine proper size prop for a specific motor/ plane? I have an Astro wattmeter to use for this. I assume this would also be contingent on no. of cells in pack? I have not been getting much flight times and have ruined several packs by flying till cut-off.

Look at the max amps AND max watts the motor is rated for - never exceed either... and going no closer than about 80% of max is even better.

But don't believe every manufacturer's optimistic claims either (Rimfire for one, many (other?) Chinese makers too) - check your motor temperature after running your set-up static for 20-30 seconds - if the motor feels too hot, use a smaller prop!

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