Monday, October 17, 2011

The PinPiYak - Home Depot pink foam flying pizza -yak

The Picture

I had a bunch of these hexTronik DT750 Brushless Outrunners sitting around for use in a multi-rotor project I have yet to make a lot of headway on. I decided I wanted to make something that took advantage of the thrust of the motor, had 3D capabilities, and was dirt simple to make.

After searching through RCGroups, I found the PiYak. A circle with elevons and a rudder. Perfect! I grabbed my sheet of pink foam, and threw something together using the proportions given on the rcgroups thread.

The Parts

  1. hexTronik DT750 Brushless Outrunner 750kv
  2. TGY Slow Fly Prop 12*3.8SF w/ shaft adapters
  3. ZIPPY Flightmax 2200mAh 3S1P 20C
  4. HobbyKing 939MG Metal Gear Servo 2.5kg/ 12.5g/ 0.14sec
  5. FlyZone 25amp ESC
  6. Turnigy 9X 2.4GHz 8Ch Receiver (V2)
  7. Hex locknuts M4 10pc

The Results



The plane has plenty of power. I tried to balance the TGY SF 12x3.8 prop, but the thing is grossly out of balance. The motor doesn't seem to care, however, and the plane shoots vertical with ease. The 3S 2200mAh battery lasts too long considering that the recommended battery for the motor is a 1300mAh. However, the larger battery keeps the CG in the right ball park.

I can't wait to put these motors in some multi-rotor configuration!

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