how to figure what motor I need
08-24-2003, 02:24 AM
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how to figure what motor I need
I have a porterfield colllegant. It weighs 52 oz's. Without a motor.
How do I figure what size motoer and prop I need. Also do you figure for glow the same way? tHANKS
kEVIN
How do I figure what size motoer and prop I need. Also do you figure for glow the same way? tHANKS
kEVIN
08-26-2003, 12:13 PM
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Power for 52oz [=80+oz] plane
Hi again Kevin - if you go the electric route (e.g. via the Astro Cobalt motors I mentioned in the other post) you are going to be adding 10-14oz for the motor, plus about 16oz or more for batteries (is your 52oz with receiver, servos, ESC etc?). I reckon your AUW is going to be in excess of 80oz (5lb), so by rule of thumb you are going to need at least half that (40oz min) in static thrust to get it to fly. You might look at one of the big belt drive motors or better yet, one of the really big AXI brushless outrunner motors (e.g. Model #4120/18) [huge torque and less weight because they don't use a gearbox].
Check out Hobby-Lobby and others for specs on these.
Cheers, Phil
Check out Hobby-Lobby and others for specs on these.
Cheers, Phil
