heli_madken
Senior Heliman
Location: Liverpool, England
| Hi,
Thought I would show you my 3D Pro based hybrid heli -
I designed a carbon chassis that is based around a single piece of carbon (the black line in the drawing below) which holds at the front the battery, receiver, motor, RC-Helitech belt drive jockey unit and tailboom mount and at the rear a 401 gyro -
 
I slung the motor underneath and moved the maingear above the tail drive gear so that the usual step in the chassis isnt needed. I used the stepped bearing from the kit between the main and tail drive gears so the mainshaft is running truly in three seperate bearings, the maingear is sandwiched between two. This reduces stress on the maingear and lets me use a JustGoFly 400DH motor, it also takes away the friction between both gears so the auto-rotation unit operates more freely. Moving the taildrive gear down also increases the distance between the mainblades and the tailboom reducing the risk of tail strikes -
I built up side frames in 1.5mm carbon to finish the chassis
And designed carbon based landing skids, the tray on top is for electrics -
I used an aluminium arrow shaft for the tailboom and a 397 tooth belt to extend the tail and let me use KOK 285mm blades from a Trex. I used the Microheli tail gearbox with the bearing flange drilled out together with my own design vertical and horizontal tail fins. The tail blades are from a Shogun which are slightly larger than stock -
 
I tidied up the electrics as best I could and housed the reciever in a small project box, I am using a CC ESC and seperate Medusa BEC -
   
I couldnt find a canopy that I liked so I made my own from scratch making a model first then mould and finally casting the canopy -
    
I used some waterslide inkjet decals to dress up the canopy and painted it using acrylics -
  
I havent done loads of flying with it yet as the weather hasnt been too fantastic but hovering is super stable and performance from the 400DH motor frightening. The RC-Helitech conversion has been fantastic running very smooth, coupled with the 401 the tail is rock solid and very responsive -
 
I documented the build on my website -
http://www.rcmi24v.pwp.blueyonder.co.uk/
More pictures in my gallery
Ken |
