Jim Hi!
Sorry for delayed response....getting old.
Good to hear you have a good Hangar at Thruxton.
I still have you Mobile number and will try and give you a call.
One of the simple parts of the Arplast system is the way voltage is applied to
motor through the hollow prop mounting.
A single thickish piano wire comes from a potentiometer and 'seats' into a brass
ferrule at the moment end.
Are you sure that is positioned correctly and also clean, not corroded?
We'll have a chat and I can probably call in later next week as I have to pick
up my aircraft engine from Mike Watts in Southampton after a full overhaul.
Regards
Gerry
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