Hello Dave,
I do not have any professional diagram but I think I figured out how it could work.
Here is a photo published in a very good book
Sikorsky S-16 by Vadim Mikheyev. It is obvious to me that there were two pairs of control cables running from the control column.
- first pair marked with
3 – to the pulley (marked with
1) placed in the forward part of the fuselage,
- second pair marked with
2 directed back.
Here is a sketch, simplistic of course, depicting how it looked like in my opinion. Sorry for the poor quality but I am not an artist.
I hope this helps a bit.
PS. Actually, I suspect there were two pulleys placed in tandem. The second one was beneath the ammo box. However, I think you do not have to complicate your work.
Regards
Marek