Home build pendulum

fishermantwo

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Joined
20 Jul 2003
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1,665
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NSW. Australia
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This is a Walt Murray design and fairly easy but time consuming to build. This is mine from a few years ago built from SS and plastic tubing.
https://www.youtube.com/watch?v=U66-R0i2c20
This is my current one that is very similar to a Monitor, built in SS mostly. Uses bevel gears which is a more effective method of converting drive than the Walt Murray Z drive. The design of the current one is basically taken straight from an article in PBO a few years ago.
https://www.youtube.com/watch?v=isw529SdN8s

Lots of good info on Youtube
 

{151760}

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1 Nov 2014
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There's a book by Bill Belcher called Self-Steering for Yachts or something similar that has good info including plans. It's out of print, but comes up on e-bay.
An in- depth Google search will find a few web sites devoted to the subject.
 

TQA

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20 Feb 2005
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Carribbean currently Grenada
sailingonelephantschild.blogspot.com
I used the Belcher book to design and build a servo pendulum one from steel which I then galvanized.

It worked fine when I got it dialed in but the process took lots of time and fiddling with sails to get a balance it could manage. I did not have a remote adjustment on the vane so having a center cockpit ketch made it all a bit of a faff. It was just so much easier to click my old Neco on and rely on the Acquair to keep up with the battery drain.
 
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