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FW-190 Power System

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Old 09-16-2014, 12:16 PM
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voodoodb
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Default FW-190 Power System

Am hopeing one of you guys or gals can help me as I am too new to electrics what to do. I have a FW190 that i AM BUILDING and have decided to go electric so I dont have to moleste the cowling for a big gas engine. I have the following:

XM 6360 CA-11 210RPM Motor

XC 9036 HV 90amp 2-12 Lipo ESC

Flytown 4200mah 10S 30c Pack

Flttown 3000mah 10S 30c Pack

My question regards what prop to use. The literature with the motor says 20-22x14, but when I use that in the calc programs it comes back as running to hot and prop stall. Using the 400mah pack it gives me a WOT time of 3.21sec.

Can one of you gurus tell me if this is true and if so what would be a better option? I am looking for a good combination of speed and power as anyone would want with a warbird.

Thanks
in advance!!!!
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Old 09-22-2014, 04:33 PM
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chuckk2
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The first critical question is what do you expect/plan the all up weight to be?
The motor maxes out a 3600W using a 12S Lipo.
A 10S lipo will produce ~ 8000-9000 RPM using the KV rating.
I'd figure 125W per pound for spirited bu not insane power, or 150+ if 3D behavior is contemplated.
You stated that you had a 4000mah pack. a 400mah pack would give you about a 10th of the flight time.
I'd think that two 6S packs in series might be better for your application, using an appropriate ESC.
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Old 09-22-2014, 06:34 PM
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Chuck thanks for the reply. I'm expecting the weight at 22-23lbs ready to fly including power system. Not wanting 3d as it's a warbird but would like a nice mix of power and speed so the 125 watt might be better.
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Old 10-12-2014, 09:12 PM
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chuckk2
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So, the required wattage is about 3000W and using a 12S battery the RPM should be about 10-11 thousand.
Your motor should work well. A 12S ESC is not going to be cheap!
Castle Creations, here you come!
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