Hydrovane

Interestingly a Hydrovane has just come up on yachts and yachty bits group on Facebook in the last hour. It would suit the OP as it has two H brackets which, if memory serves, is the correct configuration for the Westerly 33.
 
The Monitor would steer my boat on a tight reach with the kite up. whilst we trimmed like demons. Missed winning a RORC race by 40 seconds (Class and overall). Our other party piece was to have the Monitor drive upwind whilst we hiked on the rail.

On a long fin cruising boat the Hydrovane struggled in any sort of a quartering sea. It's just not powerful enough. Plus the rudder arrangement is pretty Mickey Mouse. The Windpilot was OK though it didn't like it below 4kts of boatspeed and 10tks of wind. It got the nickname 'The sulky Hun'.

How many of the Hydrovane fans have tried anything else?
 
The Monitor would steer my boat on a tight reach with the kite up. whilst we trimmed like demons. Missed winning a RORC race by 40 seconds (Class and overall). Our other party piece was to have the Monitor drive upwind whilst we hiked on the rail.

On a long fin cruising boat the Hydrovane struggled in any sort of a quartering sea. It's just not powerful enough. Plus the rudder arrangement is pretty Mickey Mouse. The Windpilot was OK though it didn't like it below 4kts of boatspeed and 10tks of wind. It got the nickname 'The sulky Hun'.

How many of the Hydrovane fans have tried anything else?
We have a friend with lots of experience of both Hydrovane and Windpilot. He has had them both on performance oriented boats. He has owned an aluminium race boat he had built, a Pogo and a 40ft cruiser racer. He explained to me that the Windpilot suits heavier boats better than the Hydrovane. The Hydrovane suits lighter displacement boats that will surf on waves. He said that on his 40ft cruiser racer the Hydrovane was so slow to react that the boat would surf and the Hydrovane wouldn't sense the change in apparent wind quick enough to steer the boat. As a result the boat didn't round up. Its slow response actually worked for him. Do the same thing on that lightweight boat with a Windpilot and the boat is likely to round up due to the faster response of the Windpilot. Since we don't readily surf, the Windpilot works well for us.
Another experience we had was cruising in company with another Trintella between Bonaire and Haiti a few years a go. We have the Windpilot, they have a Hydrovane. We had a breezy trip in broad reaching conditions, 3m seas and about 30kts. The seas would try and push the stern around but the Windpilot corrected this easily and we sailed a good course. Our friends on the other Trintella with the Hydrovane were regularly rounding up. The Hydrovane couldn't cope with the large waves pushing the stern around. Simply not enough rudder area or fast enough response. The Trintellas are heavy boats with a deep fin keel. Ours is a skeg hung rudder where as the Trintella 45 of our friends is a spade rudder. We both have the same hull with 7'2" draft.
Comparing notes with our friend the Hydrovane works better than the Windpilot in light winds from behind where as the Windpilot works better with winds on the beam or quartering in heavier conditions.
 
I would still choose a Hydrovane over other designs because I want the backup rudder. But it has definite disadvantages.
We find that we often need to put a reef in the main to get the boat to balance, so you end up going a little slower under Hydrovane.
 
We have a friend with lots of experience of both Hydrovane and Windpilot. He has had them both on performance oriented boats. He has owned an aluminium race boat he had built, a Pogo and a 40ft cruiser racer. He explained to me that the Windpilot suits heavier boats better than the Hydrovane. The Hydrovane suits lighter displacement boats that will surf on waves. He said that on his 40ft cruiser racer the Hydrovane was so slow to react that the boat would surf and the Hydrovane wouldn't sense the change in apparent wind quick enough to steer the boat. As a result the boat didn't round up. Its slow response actually worked for him. Do the same thing on that lightweight boat with a Windpilot and the boat is likely to round up due to the faster response of the Windpilot. Since we don't readily surf, the Windpilot works well for us.
Another experience we had was cruising in company with another Trintella between Bonaire and Haiti a few years a go. We have the Windpilot, they have a Hydrovane. We had a breezy trip in broad reaching conditions, 3m seas and about 30kts. The seas would try and push the stern around but the Windpilot corrected this easily and we sailed a good course. Our friends on the other Trintella with the Hydrovane were regularly rounding up. The Hydrovane couldn't cope with the large waves pushing the stern around. Simply not enough rudder area or fast enough response. The Trintellas are heavy boats with a deep fin keel. Ours is a skeg hung rudder where as the Trintella 45 of our friends is a spade rudder. We both have the same hull with 7'2" draft.
Comparing notes with our friend the Hydrovane works better than the Windpilot in light winds from behind where as the Windpilot works better with winds on the beam or quartering in heavier conditions.
is yours the Pacific or the Pacific Plus?
 
The Monitor would steer my boat on a tight reach with the kite up. whilst we trimmed like demons. Missed winning a RORC race by 40 seconds (Class and overall). Our other party piece was to have the Monitor drive upwind whilst we hiked on the rail.

On a long fin cruising boat the Hydrovane struggled in any sort of a quartering sea. It's just not powerful enough. Plus the rudder arrangement is pretty Mickey Mouse. The Windpilot was OK though it didn't like it below 4kts of boatspeed and 10tks of wind. It got the nickname 'The sulky Hun'.

How many of the Hydrovane fans have tried anything else?
We have a long fin cruising boat and we’ve had no real problems with confused seas so far. Not perfect but nowhere near the disaster you describe. In 2700 miles with some very confused swells we intervened very few times.
max wind speed 35+ knots. Min 12 knots. I thought the Hydrovane would struggle in the light winds but not a bit of it.
And yes I’ve used other wind vane systems.
 
From a performance perspective, I don't think there is much to choose between Aries, Windpilot or Monitor, etc. They are all servo pendulum designs using the main rudder to steer the boat. They are powerful designs that can steer heavy boat effectively.
We had an issue on ours when we first installed the Windpilot. All servo pendulum wind steering systems are designed to turn wheel that have a lock to lock of no ore than about 2.5 turns. This is inherent in the design of all of them.
Our steering is 3.5 turns lock to lock. This meant that the windpilot couldn't apply sufficient lock. I solved the problem by addingm1:2 pulley blocks in the steering lines. This doubled the steerage at the wheel. The results was a game changer. The Windpilot is so powerful that even with our barn door none, balanced rudder, it easily develops enough power to steer the boat. It is now far less sensitive to sail trim. Its wonderful to watch the self steering pile on a full turn of the wheel in response to a large wave. It does this quicker than I could do.
In following seas and 25/30kts of wind with the boat set up goose winged with a poled out genoa and reefed main she will steer perfectly even through squalls with no balance problems. Very reassuring. The only downside is the course isn't as straight as with the autopilot. We call our Wanda the Windpilot🙂
 
The Monitor would steer my boat on a tight reach with the kite up. whilst we trimmed like demons. Missed winning a RORC race by 40 seconds (Class and overall). Our other party piece was to have the Monitor drive upwind whilst we hiked on the rail.

On a long fin cruising boat the Hydrovane struggled in any sort of a quartering sea. It's just not powerful enough. Plus the rudder arrangement is pretty Mickey Mouse. The Windpilot was OK though it didn't like it below 4kts of boatspeed and 10tks of wind. It got the nickname 'The sulky Hun'.

How many of the Hydrovane fans have tried anything else?
Interesting piece here about the use of windvanes in the Golden Globe...... Golden Globe Race windvane safety and GGR 2026 open for entries

Surprisingly only three types used on the latest race if I read correctly and they are the Hydrovane, the Aries and the Windpilot. The organisation limits the brands of vane allowed as they see them as 'safety' items and therefore vet all the brands for 'suitability'. The Monitor is allowed but only when it is fitted with GGR modifications that are not ordinarily fitted to the commercially available units....! Food for thought!
 
From a performance perspective, I don't think there is much to choose between Aries, Windpilot or Monitor, etc. They are all servo pendulum designs using the main rudder to steer the boat. They are powerful designs that can steer heavy boat effectively.
We had an issue on ours when we first installed the Windpilot. All servo pendulum wind steering systems are designed to turn wheel that have a lock to lock of no ore than about 2.5 turns. This is inherent in the design of all of them.
Our steering is 3.5 turns lock to lock. This meant that the windpilot couldn't apply sufficient lock. I solved the problem by addingm1:2 pulley blocks in the steering lines. This doubled the steerage at the wheel. The results was a game changer. The Windpilot is so powerful that even with our barn door none, balanced rudder, it easily develops enough power to steer the boat. It is now far less sensitive to sail trim. Its wonderful to watch the self steering pile on a full turn of the wheel in response to a large wave. It does this quicker than I could do.
In following seas and 25/30kts of wind with the boat set up goose winged with a poled out genoa and reefed main she will steer perfectly even through squalls with no balance problems. Very reassuring. The only downside is the course isn't as straight as with the autopilot. We call our Wanda the Windpilot🙂
For clarity G what are the specifics of your craft please?
 
Trintella 44 ketch
Very nice ! Have you offset the vane or only use when not flying the mizzen? In addition I take it you run the control lines back to the centre cockpit, which for some strange reason the makers don't seem to recommend on their website......though I can't see why!
 
Very nice ! Have you offset the vane or only use when not flying the mizzen? In addition I take it you run the control lines back to the centre cockpit, which for some strange reason the makers don't seem to recommend on their website......though I can't see why!
The Windpilot is located in the centre of the transom. Works fine when using the mizzen. Control lines run down one side of the deck and to the centre cockpit. We get so used to the lines being there we don't even think about it.
 
The Monitor is allowed but only when it is fitted with GGR modifications that are not ordinarily fitted to the commercially available units....!
It seems the concern is the 'break tube' that is the paddle arm. These are available in different lengths depending on the freeboard. My Monitor was second hand and the paddle arm was too long. Rather than import short lengths of ss tube from the USA I made my own using what I had available, but cut a notch to give a break line should the paddle be hit. Presumably, the GGR modification is a thicker/stronger paddle arm tube that won't crumple.
 
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