[Graeme Smith]

Here is some more "why it is better a shaft drive or a belt drive". I had a friend drop in today with his 162F so I asked him if he would let be do some measurements on his tail rotor RPM.
I asked him to keep the collective in the pocket and run up the RW to 100%, he does have a governor, at 100% RRPM the tail rotor was spinning at 2740RPM I then asked him to keep 100% and push in right pedal, that decreased the Tail rotor RPM to 2547RPM a reduction through slippage of 193 RPM so the belts that were checked to be at the correct tension were slipping.
I used a digital laser rpm gauge, with new batteries