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Sport Plane Example

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The SR X250 is an aerobatic 4-channel sport plane that yields over 7 minutes of fully-aerobatic flight and can be easily flown in confined spaces. It has a 36'' wingspan and weighs 20-24 ounces. A recommended configuration uses a 2.3:1 geared Speed 400 motor on 10 500 mAH ``AA'' cells, and spins a 9x5 Graupner prop for 18 ounces of thrust. Not quite vertical performance, but not too distant from that goal. The motor costs under $10, and the transferable gearbox costs a little over $20.



Craig Kulesa
Fri Dec 1 16:54:18 MST 2000