Hi Elliott,

Thanks for the reply and the PM (pls see my PM reply).

The story of the hub is slowly evolving. I was able to acquire the Rotol series 4 and 5 maintenance manual for internal cylinder props. This is very useful, but lacks the detail I seek. I also have RX manuals, but the later external cylinder props are quite different and share little in common. If there are any other R series manuals, I would be interested to know of them.

I have not visited the FAAM, although I did email someone there without reply. I shall call next week.

My intention is to dismantle the hub and assess whether the hub can be the basis of an safe and accurate rebuild for ground running. I would like to know the profile for the 191/A blades as part of this assessment.

I appreciate any information you and other Rotol experts can assist with.

Regards,

DAI