Today everybody and their dog seem to be working on a quad project. And with my own quad having reached a relatively mature stage with stable flight some time ago, I thought it would be nice to try something different.

So inspired by the full-size Osprey tilt rotor design I just started an experimental duo/tilt copter build. Frankly I am far from sure if it will ever fly, but that is what makes it fun!


Mechanical:

My tilt design is one I used in an earlier tri-copter build. I insert a 8mm CF rods into a 750x10,5mm CF square tube and glued then together. A modified T-Rex 600 blade-holder is then inserted on the 8mm tube and fastened using glue. Finally a servo is epoxied at the side of the square tube and linked to the 600 blade-holder. Motor and ESC is a cheap TowerPro combo from HobbyKing. Cheap and easy to replace when experimenting, and the ESC has no problem handling 333mhz PWM pulses.


Hardware / software:
For control and stabilization I will use the same hardware that I used in a Quad I built earlier. A FASST R617FS receiver modified with PPM output, and the ArduIMU V2 board with custom software for stabilization and servo/ESC control.

Main body / tail:

I have yet to decide what I will do for a main body. At the very least I will need some kind of tail with a lift surface to get some balancing momentum in the pitch axis, and tail drag when in forward flight. Lots of fun experimenting to be done!

Parts:
Carbon Fiber Square Tube 750x10.5mm
Carbon Fiber Tube (hollow) 8x750mm
Align T-Rex 600 Blade holders and bearings
Turnigy S3101S Servo 17g / 2.5kg / .14sec
TowerPro BM2410-9T / 18A BEC/ 1047 Prop Combo
Futaba FASST R117FS receiver
ArduIMU+ V2 (Flat)

Views: 3855

Comment by Michael Lingg on August 5, 2010 at 10:36am
You might find this interesting as to pitch control of a tilt copter: http://baronshobbies.com/2009/08/gress-aero-bi-rotor-vtol-aircraft-...
Comment by Will on June 2, 2011 at 12:21pm
John, have you made any progress with your tiltcopter? I'm interested in building a similar model and wanted to know if you have worked out the controls or written any code for the Arducopter?
Comment by aditya k on April 24, 2013 at 11:03pm

great work! thumbs up! ;)
i'm trying to make a bicopter without control board, and since i'm new to RC, i'm unable to understand if its right to connect two esc's to a single battery,...and i want to know how to setup FLYSKY FS-T6 for a bicopter.. with channel mixing for servos...
please help me out... i'm done with the fabrication of the model.. all thats left is the electronics setup :)

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