[Graeme Smith]

This is looking great @Graeme Smith! Have you considered doing anything about the TR blade grips/pitch horns being held in by snap rings? I recall there being an incident with a TR blade flying off after maintenance due to potentially incorrect installation of the snap ring. While unrelated, it was just a thought that came up. Seems to me that is an area that should be addressed at some point as well.

Hi Jared, simple answer no, I have enough on my plate ATM, and the reason I am doing this is to replace the tail rotor belts as they destroyed my last build, and I thought why not, the shaft drive at its slightly higher RPM = more thrust, no tail rotor belt adjustments and maybe an answer to the ballast???
making the shaft to suit the existing RW T/R pitch horns makes my current life a little easier and cheaper.

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Update .... I have decided to spin the tail rotor blades the opposite way to a std RW, there is a mountain of evidence that you do gain extra authority from the advancing blade travelling upwards into the down wash of the main rotor, I am as a consequence of that decision also having new pitch horns made to put the RW weights on the outside as they are in the RW setup.
Also we have gone back to the books and revamped the tail rotor gearbox and reduced its initial weight by 4kg, we are now at just above the belt driven RW tail rotor setup.
Not finished yet as our CAR35 engineer is looking at what we have done, my hat is off to the engineer with his tenacity to reduce weight and yet maintain a significant safety margin.
Along with the opposite rotation we are also speeding it up a little, so I am very confident that the finished tail rotor drive system will offer significant extra tail rotor authority to the std belt drive system, along with no slippage and no belt breakages.

So all up we should be very close to the RW weight of its drive belts, pullies, hanging pendulums etc. fingers crossed.