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Old 03-06-2019, 02:51   #1
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Boat: Wylo2, 32foot, gaffer
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Wind vane steering

Hearty greetings to you all. Im a new-one in this community. Thanks for having me.
I sail a Wylo2 gaffer in the Cape of storms, out of Saldanha Bay Yacht Club.
I love the boat but sitting flat on my but at the tiller all the time isn't fun. I'm an "old school" sailor so a wind vane steering system is going to happen soon!
Commercial wind vane steering gears are just not available here or are just too expensive to import.
Compounding matters is if I were to buy and import one of the commercially available units to relieve me at the helm, which one and how will it work on a Wylo?
Looking at the original drawings of the Wylo self steering system on the web I note certain details lacking and research tells me things have moved on since then.
I am a dab hand in the workshop so have finalised the design and have built a prototype that proves my concept.
Now here is the crux of my request from you all for some modern input.
I will use a horizontally pivoted vane driving a trim tab on the transom hung rudder.
At what angle off the horizontal are modern vanes mounted? I see anything from horizontal to 20 degrees in what I can find to read.
Please tell me what unit you use and the angle the vane is to horizontal?
I am afraid the theory of why this offset angle is so important is a bit vague in my one cell brain so if anyone could enlighten me there I'd be forever indebted...
Wishing you all fair winds in your sails!
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Old 03-06-2019, 03:12   #2
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Re: Wind vane steering

Monitor is one of the better brands out there.

Disclaimer: I’ve never used oneWindvane (Monitor) for Mariner 31/32 and Fuji 32
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Old 03-06-2019, 03:24   #3
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Re: Wind vane steering

I have an auxiliary rudder wind vane designed by Bill Belcher and home built by the previous owner. His book with the design is now hard to find. I can’t recall, it may explain the angle. The vane is dead vertical.

I think I have the book in the first link below. Not that I’d pay that price.

https://www.amazon.com/Wind-Vane-Sel.../dp/1877197009

https://www.abebooks.com/Wind-Vane-S...4aAm2vEALw_wcB
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Old 03-06-2019, 05:56   #4
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Re: Wind vane steering

That one picture tells me more than a months reading has.
Thank you! Does your vane gear work well and does it tend to oversteer at all? Most interested to know...
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Old 03-06-2019, 08:46   #5
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Re: Wind vane steering

I don’t use it a lot, as a wind vane. When I have used it it was fine.

I do use it more with a tiller pilot. Because the aux rudder is so far aft it is very effective steering. When motoring I lock the main rudder to neutralize prop walk and then drive the aux rudder with the tiller pilot. The only problem I have is the Raymarine tiller pilots keep breaking. I’ve recently bought a Pelegic system that i will be fitting shortly.
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Old 03-06-2019, 09:55   #6
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Re: Wind vane steering

"I have an auxiliary rudder wind vane designed by Bill Belcher and home built by the previous owner. His book with the design is now hard to find. I canít recall, it may explain the angle. The vane is dead vertical."

Thanks for the picture. I have the identical unit and wondered where the design came from. Never used it yet but seems elegantly simple.
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Old 03-06-2019, 09:56   #7
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Re: Wind vane steering

One detail, on the question of oversteer. The vane shaft has two lead weights which can slide up and down the shaft to adjust sensitivity.
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Old 03-06-2019, 11:21   #8
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Re: Wind vane steering

We use a Monitor steering vane on our Bristol 29.9, it is a great piece of kit.
They come up used as do other brands, maybe check your local Craig’s list type of thing.

Fair winds,
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