what size prop

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04-26-2009, 10:48 AM

BillS

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what size prop

I have a Great Planes Thrust Master brush motor and a 3 cell 123-battery pack. Anyone know what size prop is needed to draw about 20 amp? Thanks.

Bill

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04-26-2009, 06:23 PM

Matt Kirsch

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RE: what size prop

If it's a Thrustmaster 550, then I believe a 6x4 is what you need.

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04-26-2009, 08:53 PM

BillS

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RE: what size prop

Thanks. The motor looks like a 550 but is not marked.

Bill

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