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Electric Stunt => Gettin all AMP'ed up! => Topic started by: Ken Culbertson on June 17, 2025, 04:26:01 PM

Title: Twin Prop sets
Post by: Ken Culbertson on June 17, 2025, 04:26:01 PM: I am running two BadAss 2320-820 motors on my twin. I need prop recommendations. It is a large (710 squares) plane and a bit overweight at 70oz. I have no idea where to go for quality props in small sizes (9-10") in counter rotating sets.

Ken
Title: Re: Twin Prop sets
Post by: Pete Bauer on June 17, 2025, 05:49:11 PM: I use APC Propellers on all my electrics (https://www.apcprop.com). Many choices to test out (diameter, pitch).
Title: Re: Twin Prop sets
Post by: Ken Culbertson on June 17, 2025, 05:57:23 PM: Quote from: Pete Bauer on June 17, 2025, 05:49:11 PM
I use APC Propellers on all my electrics (https://www.apcprop.com). Many choices to test out (diameter, pitch).
Thanks, I have two APC sets coming Thursday, a 9x6 and a 10x5. I hope you are right.

Ken
Title: Re: Twin Prop sets
Post by: Larry Wong on June 18, 2025, 01:27:18 PM: Ken I use Badass wood 10'x5 L/R on my twin with Bad ass 2814- 870 KV
Title: Re: Twin Prop sets
Post by: Ken Culbertson on June 18, 2025, 02:39:09 PM: Quote from: Larry Wong on June 18, 2025, 01:27:18 PM
Ken I use Badass wood 10'x5 L/R on my twin with Bad ass 2814- 870 KV
I think that you have just convinced me. I spent most of yesterday trying to figure out why my 2320s were using so much power. With the help of some others we concluded that the plane wanted a 10x5 prop but the motor didn't. The only answer to using less energy was a bigger motor. Bob Hunt recommended the 23xx series so that is what I have now. What I did not factor in was that his planes are lighter than the surrounding air. Mine are more like lighter than the workbench. We hit on the 2814-870. I will be building new nacelles to house the 28s. Good thing is that the added weight will be offset by a 6s 2800 instead of a 5s 4200. This plane, heavy as she is flys so well that it is worth saving.

Ken