Mystery Self Steer Wind Vane Help

[Don C L]

Originally Posted by over40pirate

Here is a few more pics.
The big pulley is attached to the vane, and the lines go straight down, to a pulley, then to the tiller, via a pulley on either side of cockpit.
I think there needs to be 2 more pulleys, below the small one on the vane, to guide the lines forward and outward. In the first picture showing the small pulley, the forward line coming off the pulley, would rub on the small metal disc, with the 6 bolts in it.
The line with the cam cleat turns the vane into the wind.
I'm sure the different sized "sails" are for wind conditions, and amount of force required.

Thanks! I think this may officially qualify you as an "old fart." That really is a nice one, either commercially made or by someone very talented.