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I have an old Flair Fledgling I am looking to convert to electric (It's a slope soarer). My aim is to use the motor to get it up, then float it around for a bit, then boost it back up again, so it's low speed, general pottering about that I am looking for.
So far I have worked out the following:
I'd like to swing an 8 x 4 folding prop (no undercarriage)
Model weight approx 1.5Kg. prior to fitting engine and battery.
Power loading - 75W/lb should do the trick, which approximates to ~250W
Current - Max 30A should do.
Lipo: 250W / 30A = ~8.3V, so at 3.7V/cell, rounded up, gicves a 3 cell pack.
Probably aiming for 5000mAh, so a 3s 20C should do (20 x 5.0 = 100, so 20C should be fine
The part I am struggling with is the motor requirement - I believe I need a fairly low kV figure - it's a glider, not some screaming drone, so I am not looking at super high rpm, just lots of torque at lower rpm
Budget is always tight.
Does anyone have any suggestions for UK warehouse Hobbyking motors which would fit the bill ? And any favourite BEC Speed controllers too, I guess.