Scale Replica

Yesterday I re-installed the CSM Revlock and test flew the Mongoose and although iy appeared that the governor was working I could not set the correct headspeed which when tached, was alway lower than I had set.

After double checking my setup (ration, engine speed etc) and test flying a couple more times I decided to switch back to the Futaba GV-1 in which I set the same ratio and target headspeeds.

 Again I had a friend tach the actual headspeed when flying and it matched that set in the GV-1.

 How do you tie cables to the helicopter frame when you only have one hole.

You could go through the hole and over the side of the frame,  but this would not be very neat or often practicle.

So here is what I do.  Imagine the piece of plywood with the hole in it shown below is the the helicopter frame.

So I received my new JR 12x radio this week and tried it yesterday on my Airstar Mongoose.

  I was already using the JR X9303 2.4 Ghz radio with this helicopter so all I had to do was rebind the JR R921 receiver with the 12x.

The first thing that I noticed that was different to the 9303 was the way the throttle trim works.  On the 9303, you can set your throttle curve to 0 if you like and the throttle trim can bring it lower than o to kill the engine.  On the  12x the throttle trim will only bring the  throttle curve to a minimum of 0, so you have to adjust your throttle curve to take account of this.

This channel must be able to use a 3 position switch, preferably of the slider type to allow a gradual spool up.  The JR XP9303 has two, one on each side (Aux3 and Pitch).