Building a Towel? What?
Well a Towel is a delta shaped Remote Controlled Aircraft with an airframe that’s pretty much made of scrap materials.
Firstly a little background:
Being a bit of a plane nut, I decided to have a go at building one.
RC Materials were sourced from Hobbyking online, Hobbyrama in Stafford, Brisbane. I’m using; Turnigy 9X RC Tx/Rx Combo, Hobbyking SS Series 18-20A ESC (Motor controller), a T2830-1000 Turnigy motor and a couple of HKSCM16-5 mini servos.
The foam sheet was purchased from Fix-A-Frame at Mt Gravatt (about $25 for white 4mm thick, 1500 x 1000) and the ‘Coroplast’ material for the deck was from a recycled real estate sign. I had scrap aluminium for motor mounting, cable ties, tape etc, etc.
Building it took pretty much 7-8 hours. That included learning how the RC transmitter worked, and setting up the Elevon feature on it. If you do use the 9x transmitter, you can actually power up the servos and set up the Elevon mixing in real time, which was a lot easier for me to visualise. I use it in Mode 2 (throttle on left joystick up/down, elevator – right joystick up/down which is mixed with aileron – right joystick left/right controls).
Things I found – my servo wires were short, a tight reach on my plane. Foam board folds easily in the wrong place if you stress it. Channels 1 – Aileron#1, 2 – Aileron#2, 3 – Throttle (ESC).
TGY9X Elevon setting –
State – ACT, AIL 1 -100 -100, AIL2 -100 -100, ELE1 -100, ELE2 100
It’s sitting here built, but it’s blowing a gale outside so not flown yet.
Update: Well, that went well! 20m flight and the prop nut came off, crashed. Nose bent. New 5mm nut sourced ready for try out number two!