Restored Graupner Helimax 40 helcopter
This is a radio controlled helicopter from the early 1980s.
I obtained this as a box of bits and spend many hours cleaning and restoring it.
I have had the engine running on the bench (with a propeller fitted for starting) but I haven't started it in the model as I don't have a starter.
It has a OS Max 45F nitro / glow engine installed. This ran very well when on the bench.
Servos are installed and set up for mechanical mixing (one servo "adjusts" another for cyclic / collective mixing).
An alternative servo box for electronic (transmitter) based mixing is included.