There is another thread comparing pendulum servo (Monitor) and auxiliary
rudder (Hydrovane).
http://www.cruisersforum.com/forums/...ane-10991.html
I haven't sailed with the Cap Horn but people claim it is very good especially in light air. The only complaint I've heard is one fellow had a mystery problem with the angle
steering rod bending or something like that. He replaced the rod with new but vane still didn't
work as well as it had before. He was working with Yves to try and cure the problem but never heard how it turned out. I wouldn't let that instance scare me as people have had problems with all different kinds of vanes.
There are a number of Pendulum Servo vanes:
SAILOMAT WINDPILOT: selfsteering under sail A few Superlatives A few Superlatives Aries http://www.selfsteer.com/products/index.php These are just a few.
WindPilot,
Hydrovane, Scanvik, and
Hydrovane are some manufacturers of auxillary
rudder system. I've got the WindPilot Pacific Plus on my
current boat and it's uncanny how well it steers from near zero boat speed on up. Haven't had the fun of using it in winds over 40mph but below that speed, it's been superb.
The dissimilar metal problems with the
Aries can be easily handled. Disassemble it and reassemble using liberal amounts of lanolin or TefGel where you find stainless and
aluminum. On my relatively early Aries, the
bronze gears did not come in contact with the aluminum so wasn't an issue. Believe they've handled the dissimilar metals issue with the new Danish made Aries. BTW, is Nick Franklin's daughter still selling replacement
parts for the one's he made???? Miss Nick, he was a delight to do business with.