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Archive for April, 2012
Posted by Straight Up | Apr 22, 2012 @ 09:07 AM | 9,659 Views
A few months ago I was lucky enough to pick-up first place in the prize draw, and scored a $500 voucher from Tower Hobbies. One of Tower's planes caught my eye: the Top Flite P-51D Mustang 60 ARF. I've never owned a warbird, and this would be a serious step into that camp! This one is definitely not a park flyer!

Despite being an ARF, the build was not straightforward, and took more than the standard "week of evenings". The plane was intended for glow power, and built in the traditional way - i.e. servos and gear all in the mid section of the plane. If I had followed the intended layout it would have needed half a pound of lead in the tail to hit the recommended CG! So some re-engineering was required, focusing on getting all gear as far aft as possible. Hobby King came through with the power system:
  • Motor: Turnigy Aerodrive SK3 - 5065-320kv
  • ESC: Turnigy dlux 120A HV Brushless Speed Control
  • Batteries: Rhino 8S (4S x2) 3700mAh 30C
  • Prop: Turnigy Ultra-light wood propeller 15x10

The specified weight was 9 -10lb (4.0 - 4.5kg) and I was shooting for a power loading of ~500W/kg (230W/lb) - that nuclear power loading I'm so fond of ("F3A Pattern" setting in EAS) that enables my planes to fly in any direction I choose at my nominated speed, including plumb vertical. This translated into a target power of 2000W. It would be grossly overpowered, but only at full throttle. Therefore it should cruise very...Continue Reading