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Wind-vane self steering .. questions, thoughts, ..
Yesterday; closing up the boat. Talking over the season with the other
victims { oops, I mean sailors of sailboats } .. Anyway, after we got done talking about the rain in May and June ; the heat of July and August; the ripoff marina's we visited; the beautiful anchorages we found, the fog, the wind, ............. we started on the crew. Or, lack there of. Then we all walked over to the boat/sailboat with the wind-vane. "Sure does look cool", "kinda says I am going solo and my windvane is steering". said one of the boat owners. Sailboats with wind-vanes look like boats that have been somewhere. They have that something about them that sets them apart from the sailboats that go out for a day sail. But what about the wind-vane? Should I get one? Would it be practical for cruising up and down the coast of New England? Huum. Sure would be better than the blue bungy-cord self steering device I use now. We got to talking ... "I should get one of these" said the red hulled sailor. "But what about the cost" said the blue hulled sailor. "Probably be able to find one cheap on ebay" said the 26' boat owner as "she" kept working away. "Ya think so"? said I. "Sure, look at all the ya-hoos around here who talk about going to the Caribbean or somewhere else and never get further than Cape Ann" she said. "Why don't you look on the net, see what you can find, get an idea of price, and then next time your here we can talk wind-vanes" the 26' owner said. So .. what do you all think? Any wind-vane owners out there? Do you use yours much? Are they a good addition? What about second hand? What brand is the best? Do they need to be sized for the boat? Will they work with a tillar? Lots and lots of questions. All answers will be printed, and passed on to the owners of a red boat, blue boat, 26' boat, two guys looking for a boat, one motor boat, ........................................... Gotta have a wind-vane if your going to look like the boat that is going to Antigua. Even if the red boat owner tells me the boat going to Antigua has been going to Antigua for ten years! |
Wind-vane self steering .. questions, thoughts, ..
In iU5Wg.1711$ms1.851@trndny05 "Benning Wentworth" writes:
Yesterday; closing up the boat. Talking over the season with the other victims { oops, I mean sailors of sailboats } .. Anyway, after we got done talking about the rain in May and June ; the heat of July and August; the ripoff marina's we visited; the beautiful anchorages we found, the fog, the wind, ............. we started on the crew. Or, lack there of. Then we all walked over to the boat/sailboat with the wind-vane. "Sure does look cool", "kinda says I am going solo and my windvane is steering". said one of the boat owners. Sailboats with wind-vanes look like boats that have been somewhere. They have that something about them that sets them apart from the sailboats that go out for a day sail. But what about the wind-vane? Should I get one? Would it be practical for cruising up and down the coast of New England? Huum. Sure would be better than the blue bungy-cord self steering device I use now. We got to talking ... "I should get one of these" said the red hulled sailor. "But what about the cost" said the blue hulled sailor. "Probably be able to find one cheap on ebay" said the 26' boat owner as "she" kept working away. "Ya think so"? said I. "Sure, look at all the ya-hoos around here who talk about going to the Caribbean or somewhere else and never get further than Cape Ann" she said. "Why don't you look on the net, see what you can find, get an idea of price, and then next time your here we can talk wind-vanes" the 26' owner said. So .. what do you all think? Any wind-vane owners out there? Do you use yours much? Are they a good addition? What about second hand? What brand is the best? Do they need to be sized for the boat? Will they work with a tillar? Lots and lots of questions. All answers will be printed, and passed on to the owners of a red boat, blue boat, 26' boat, two guys looking for a boat, one motor boat, .......................................... Gotta have a wind-vane if your going to look like the boat that is going to Antigua. Even if the red boat owner tells me the boat going to Antigua has been going to Antigua for ten years! I bought a Windpilot windvane some years ago. I made some marketing research, visited boat shows, discussed with the makers and wendors, actually installed one in a friend's boat and sailed a couple of days with him after it was installed. I bought my several years after this experience. So why did it take so long to make up my mind. First reason was perhaps that the shock cord did a decent job steering the boat on the beat and the electronic tiller pilot was reasonable in anything but heavy weather and secondly a good windvane would cost about ten low end tiller pilots. So what was different after I got the windvane? The first thing you notice, is that it is working SILENT. I have used for years a slogan: The engineers can do anything, but nothing silent. My tillepilot Autohelm ST4000 is not the really noicy type, but no squacing anymore. The second difference was apparent when the wind picked up and there was some confused seas. When the conditions became demanding, the windvane was more and more superior to the tillerpilot. I promise you, I know how to use the tillerpilot, this is my sixth and I have had ond vor some 20 years, the last two ones of the same make have been with me for some 10 years, so I amu sure I have learned most of the tricks of how to use one. I am sailing in the Baltic, where we most of the time cruising is day sailing from port to port from an island to another, with anchoring from the rear with the pow tied to some pines or rocks on the shore. Some trips go overnight, but we do cross the Baltic in one or two nights, but can stay out for perhaps four days. So this is not what you really call blue water cruising, where you stay out for a couple of weeks. My vife was a bit hesitant for us to keeps a watch alone because she did not have all that confidence in the autopilot. She knew how to use it, but now she does not have any objections for even multiple nights crossings as she is confident the windvane will steer the boat whatever the weather is throwing at us. We have the tillerpilot, it is used when we are leawing the harbour and coming and and while motoring, but when we get underway, the windvane takes over. Remember it is silent and it does not use any electricity. Moderate heavy reach and run caused battery drain of some 4 to 6 amperes. With the windwane our Aerogen 4 is producing more electricity than the navigation instrumentrs and cooler and lights consume. If we are sailing in some narrow channels, there are many of them in the Finnish and Swedish archipelago, where the islands and high trees are affecting the wind, the windvane is not a good servant, as you have to adjust it frequently, but as soon as there is some space around you, it is doing its job properly. After the first season with the windvane, my vife asked: Why did you not by this earlier, what took you so long to make up your mind. You can get plenty of information of all makes of windvanes: http://www.windpilot.com/ You can download Peter Foerthmann's book Selfsteering under Sail. I recommend that for you to read, even if you thing you would buy another make. If you buy a windvane, buy a good one, it will last practically for ever. The good ones will do their job day in day out and becayse this is a safety factor as well do not go for the good one. - Lauri Tarkkonen |
Wind-vane self steering .. questions, thoughts, ..
Lauri ,, I looked up the book ... what a great find! The whole book is
FREE! Good reading ......................... I still have much more to learn. But ??? Maybe ???? ========== "Lauri Tarkkonen" wrote in message ... In iU5Wg.1711$ms1.851@trndny05 "Benning Wentworth" writes: Yesterday; closing up the boat. Talking over the season with the other victims { oops, I mean sailors of sailboats } .. Anyway, after we got done talking about the rain in May and June ; the heat of July and August; the ripoff marina's we visited; the beautiful anchorages we found, the fog, the wind, ............. we started on the crew. Or, lack there of. Then we all walked over to the boat/sailboat with the wind-vane. "Sure does look cool", "kinda says I am going solo and my windvane is steering". said one of the boat owners. Sailboats with wind-vanes look like boats that have been somewhere. They have that something about them that sets them apart from the sailboats that go out for a day sail. But what about the wind-vane? Should I get one? Would it be practical for cruising up and down the coast of New England? Huum. Sure would be better than the blue bungy-cord self steering device I use now. We got to talking ... "I should get one of these" said the red hulled sailor. "But what about the cost" said the blue hulled sailor. "Probably be able to find one cheap on ebay" said the 26' boat owner as "she" kept working away. "Ya think so"? said I. "Sure, look at all the ya-hoos around here who talk about going to the Caribbean or somewhere else and never get further than Cape Ann" she said. "Why don't you look on the net, see what you can find, get an idea of price, and then next time your here we can talk wind-vanes" the 26' owner said. So .. what do you all think? Any wind-vane owners out there? Do you use yours much? Are they a good addition? What about second hand? What brand is the best? Do they need to be sized for the boat? Will they work with a tillar? Lots and lots of questions. All answers will be printed, and passed on to the owners of a red boat, blue boat, 26' boat, two guys looking for a boat, one motor boat, .......................................... Gotta have a wind-vane if your going to look like the boat that is going to Antigua. Even if the red boat owner tells me the boat going to Antigua has been going to Antigua for ten years! I bought a Windpilot windvane some years ago. I made some marketing research, visited boat shows, discussed with the makers and wendors, actually installed one in a friend's boat and sailed a couple of days with him after it was installed. I bought my several years after this experience. So why did it take so long to make up my mind. First reason was perhaps that the shock cord did a decent job steering the boat on the beat and the electronic tiller pilot was reasonable in anything but heavy weather and secondly a good windvane would cost about ten low end tiller pilots. So what was different after I got the windvane? The first thing you notice, is that it is working SILENT. I have used for years a slogan: The engineers can do anything, but nothing silent. My tillepilot Autohelm ST4000 is not the really noicy type, but no squacing anymore. The second difference was apparent when the wind picked up and there was some confused seas. When the conditions became demanding, the windvane was more and more superior to the tillerpilot. I promise you, I know how to use the tillerpilot, this is my sixth and I have had ond vor some 20 years, the last two ones of the same make have been with me for some 10 years, so I amu sure I have learned most of the tricks of how to use one. I am sailing in the Baltic, where we most of the time cruising is day sailing from port to port from an island to another, with anchoring from the rear with the pow tied to some pines or rocks on the shore. Some trips go overnight, but we do cross the Baltic in one or two nights, but can stay out for perhaps four days. So this is not what you really call blue water cruising, where you stay out for a couple of weeks. My vife was a bit hesitant for us to keeps a watch alone because she did not have all that confidence in the autopilot. She knew how to use it, but now she does not have any objections for even multiple nights crossings as she is confident the windvane will steer the boat whatever the weather is throwing at us. We have the tillerpilot, it is used when we are leawing the harbour and coming and and while motoring, but when we get underway, the windvane takes over. Remember it is silent and it does not use any electricity. Moderate heavy reach and run caused battery drain of some 4 to 6 amperes. With the windwane our Aerogen 4 is producing more electricity than the navigation instrumentrs and cooler and lights consume. If we are sailing in some narrow channels, there are many of them in the Finnish and Swedish archipelago, where the islands and high trees are affecting the wind, the windvane is not a good servant, as you have to adjust it frequently, but as soon as there is some space around you, it is doing its job properly. After the first season with the windvane, my vife asked: Why did you not by this earlier, what took you so long to make up your mind. You can get plenty of information of all makes of windvanes: http://www.windpilot.com/ You can download Peter Foerthmann's book Selfsteering under Sail. I recommend that for you to read, even if you thing you would buy another make. If you buy a windvane, buy a good one, it will last practically for ever. The good ones will do their job day in day out and becayse this is a safety factor as well do not go for the good one. - Lauri Tarkkonen |
Wind-vane self steering .. questions, thoughts, ..
Benning,
Mine is 25 years old, home made by the guy that finished the inside of the boat. It is the "obsolete" axillary rudder with trim tab type. I can only vouch for it. But IT is wonderful. My advice? Get one. You have to figure out the type. I'll be interested in other peoples comments as someday mine will break and I'll have to replace it. But replace it I will. FWIW, the axillary rudder gives you a spare rudder to steer by, should anything happen to your main. It strikes me the single disadvantage of the aux rudder is that it makes backing difficult. Howard Benning Wentworth wrote: Yesterday; closing up the boat. Talking over the season with the other victims { oops, I mean sailors of sailboats } .. Anyway, after we got done talking about the rain in May and June ; the heat of July and August; the ripoff marina's we visited; the beautiful anchorages we found, the fog, the wind, ............. we started on the crew. Or, lack there of. Then we all walked over to the boat/sailboat with the wind-vane. "Sure does look cool", "kinda says I am going solo and my windvane is steering". said one of the boat owners. Sailboats with wind-vanes look like boats that have been somewhere. They have that something about them that sets them apart from the sailboats that go out for a day sail. But what about the wind-vane? Should I get one? Would it be practical for cruising up and down the coast of New England? Huum. Sure would be better than the blue bungy-cord self steering device I use now. We got to talking ... "I should get one of these" said the red hulled sailor. "But what about the cost" said the blue hulled sailor. "Probably be able to find one cheap on ebay" said the 26' boat owner as "she" kept working away. "Ya think so"? said I. "Sure, look at all the ya-hoos around here who talk about going to the Caribbean or somewhere else and never get further than Cape Ann" she said. "Why don't you look on the net, see what you can find, get an idea of price, and then next time your here we can talk wind-vanes" the 26' owner said. So .. what do you all think? Any wind-vane owners out there? Do you use yours much? Are they a good addition? What about second hand? What brand is the best? Do they need to be sized for the boat? Will they work with a tillar? Lots and lots of questions. All answers will be printed, and passed on to the owners of a red boat, blue boat, 26' boat, two guys looking for a boat, one motor boat, .......................................... Gotta have a wind-vane if your going to look like the boat that is going to Antigua. Even if the red boat owner tells me the boat going to Antigua has been going to Antigua for ten years! |
Wind-vane self steering .. questions, thoughts, ..
I've used wind vanes on passages and agree that they are very good
things. I've even considered putting one on my catamaran which has carried me many thousands of off shore miles. However, I believe that the costs associated with vanes are too high compared to the benefits on my boat. Each case will be different, but here is my thinking on this for my boat: I. Benefits: 1) wind/water powered, works even if engine and electrical fail. 2) simple can be fixed in remote locals. 3) power savings allow for greater use of electronic nav aids like RADAR. 4) silent. 5) amusing. 6) looks salty. II. Costs: 1) very expensive compared to electronic self steering unless home built. 2) Adds a lot of weight to the end of the boat reducing available payload, increasing ptiching moment and increasing drag. Speed and seakeeping costs are larger on total and percantage basis as boats get lighter and faster. 3) Add wind and water drag. Drag increases greatly as boat velocity increases so fast boats pay more than slow ones here, too. 4) Does not function in calms. 5) Functions poorly or even dangerously when boat speed approaches wind speed. Again, a problem only for fast boats. 6) Exposed to elements, part failures, eg oars and vanes, common. Fast boats will put more strain on the gear and should expect greater failure rates. 7) Increased dock fees based on LOA. 8) Complicates davit arrangements 9) May make boat more difficult to manuver esp. in reverse. 10) Setting and retrieving oar or rudder can be difficult. 11) Does not steer a compass course, makes DR much more diffiuclt. 12) Look industrial. -- Tom. |
Wind-vane self steering .. questions, thoughts, ..
In .com " writes:
I've used wind vanes on passages and agree that they are very good things. I've even considered putting one on my catamaran which has carried me many thousands of off shore miles. However, I believe that the costs associated with vanes are too high compared to the benefits on my boat. Each case will be different, but here is my thinking on this for my boat: Because it is different for different boats, it is perhaps necessary to bring some other angles into this. I. Benefits: 1) wind/water powered, works even if engine and electrical fail. If you have a "servo-pendulum" windvane, where the boat speed is giving the mechanical power to steer the boat is is superior to cheap tillerpilots, as the boat speed will determine the speed and power of rudder action, as the cheap tillerpilots have electric motor of single speed. 2) simple can be fixed in remote locals. Tolerates better water than electronic gears, failure rates lover. Thus more reliable. 3) power savings allow for greater use of electronic nav aids like RADAR. 4) silent. 5) amusing. 6) looks salty. II. Costs: 1) very expensive compared to electronic self steering unless home built. Expensive compared to cheap electronics, but one should not compare the price of a state of the art windvane to the cheapest electronic pilots. 2) Adds a lot of weight to the end of the boat reducing available payload, increasing ptiching moment and increasing drag. Speed and seakeeping costs are larger on total and percantage basis as boats get lighter and faster. Windpilot Pacific (boats from 30 to 65 feet) weights 44 lbs (20 kg), I would not call this a lot. I am positive that in a 40 foor boat you can not see or feel the difference in pitching. 3) Add wind and water drag. Drag increases greatly as boat velocity increases so fast boats pay more than slow ones here, too. Applies only for multihulls and ULDB boats, not on the majority of cruising boats. 4) Does not function in calms. I have not seen a sailing boat moving in calm. If you are motoring in calm you can use the tiller pilot. If there is enough wind to move the boat for some 3 knots, there is enough wind to steer with the Windpilot. 5) Functions poorly or even dangerously when boat speed approaches wind speed. Again, a problem only for fast boats. Racing multihuls and ULDB:s, not ordinary cruising boats. 6) Exposed to elements, part failures, eg oars and vanes, common. Is not true for the good ones. I would dare to make a bet that a proper windvane, say Windpilot, will outlast almost any electronic pilot. Fast boats will put more strain on the gear and should expect greater failure rates. The same applies to electronic gear. 7) Increased dock fees based on LOA. Not true for Windpilot Pacific. When you turn the oar up, it will be inside the stern level. I would not recommed the windvanes with steering rudders, as they are more vulnerable in the stern. Some makes are taking much more space behind the boat, avoid them (Monitor, Aries etc.) 8) Complicates davit arrangements Some of the complications can be avoided by crafty plannind. 9) May make boat more difficult to manuver esp. in reverse. Do not buy one with own steering rudder, because it is a nuisance when manouvering. 10) Setting and retrieving oar or rudder can be difficult. Depends on the make. Why to buy one where this is true. In Windpilot Pacific it is very easy, you just let it fall into the sea and you pull it up by a piece of string. 11) Does not steer a compass course, makes DR much more diffiuclt. I do not know why you should steer a sailboat with a windvane to a compas course, but if you really need to do it, you can take the smallest and cheapest autopilot, and let it steer you servo-pendulum windvane instead of the wind. By the way, I do not see the point of this, as the sailing boat does not sail by itself to a compas course accurate enough for DR. 12) Look industrial. You may keep your opinion on the looks. - Lauri Tarkkonen -- Tom. |
Wind-vane self steering .. questions, thoughts, ..
You're partial to Windpilot. Any interest (moneywise) in that company? How
would you mount a windpilot when there is an outboard in the middle of the stern? Gordon "Lauri Tarkkonen" wrote in message ... In .com " writes: I've used wind vanes on passages and agree that they are very good things. I've even considered putting one on my catamaran which has carried me many thousands of off shore miles. However, I believe that the costs associated with vanes are too high compared to the benefits on my boat. Each case will be different, but here is my thinking on this for my boat: Because it is different for different boats, it is perhaps necessary to bring some other angles into this. I. Benefits: 1) wind/water powered, works even if engine and electrical fail. If you have a "servo-pendulum" windvane, where the boat speed is giving the mechanical power to steer the boat is is superior to cheap tillerpilots, as the boat speed will determine the speed and power of rudder action, as the cheap tillerpilots have electric motor of single speed. 2) simple can be fixed in remote locals. Tolerates better water than electronic gears, failure rates lover. Thus more reliable. 3) power savings allow for greater use of electronic nav aids like RADAR. 4) silent. 5) amusing. 6) looks salty. II. Costs: 1) very expensive compared to electronic self steering unless home built. Expensive compared to cheap electronics, but one should not compare the price of a state of the art windvane to the cheapest electronic pilots. 2) Adds a lot of weight to the end of the boat reducing available payload, increasing ptiching moment and increasing drag. Speed and seakeeping costs are larger on total and percantage basis as boats get lighter and faster. Windpilot Pacific (boats from 30 to 65 feet) weights 44 lbs (20 kg), I would not call this a lot. I am positive that in a 40 foor boat you can not see or feel the difference in pitching. 3) Add wind and water drag. Drag increases greatly as boat velocity increases so fast boats pay more than slow ones here, too. Applies only for multihulls and ULDB boats, not on the majority of cruising boats. 4) Does not function in calms. I have not seen a sailing boat moving in calm. If you are motoring in calm you can use the tiller pilot. If there is enough wind to move the boat for some 3 knots, there is enough wind to steer with the Windpilot. 5) Functions poorly or even dangerously when boat speed approaches wind speed. Again, a problem only for fast boats. Racing multihuls and ULDB:s, not ordinary cruising boats. 6) Exposed to elements, part failures, eg oars and vanes, common. Is not true for the good ones. I would dare to make a bet that a proper windvane, say Windpilot, will outlast almost any electronic pilot. Fast boats will put more strain on the gear and should expect greater failure rates. The same applies to electronic gear. 7) Increased dock fees based on LOA. Not true for Windpilot Pacific. When you turn the oar up, it will be inside the stern level. I would not recommed the windvanes with steering rudders, as they are more vulnerable in the stern. Some makes are taking much more space behind the boat, avoid them (Monitor, Aries etc.) 8) Complicates davit arrangements Some of the complications can be avoided by crafty plannind. 9) May make boat more difficult to manuver esp. in reverse. Do not buy one with own steering rudder, because it is a nuisance when manouvering. 10) Setting and retrieving oar or rudder can be difficult. Depends on the make. Why to buy one where this is true. In Windpilot Pacific it is very easy, you just let it fall into the sea and you pull it up by a piece of string. 11) Does not steer a compass course, makes DR much more diffiuclt. I do not know why you should steer a sailboat with a windvane to a compas course, but if you really need to do it, you can take the smallest and cheapest autopilot, and let it steer you servo-pendulum windvane instead of the wind. By the way, I do not see the point of this, as the sailing boat does not sail by itself to a compas course accurate enough for DR. 12) Look industrial. You may keep your opinion on the looks. - Lauri Tarkkonen -- Tom. |
Wind-vane self steering .. questions, thoughts, ..
On Mon, 9 Oct 2006 17:06:46 -0700, "Gordon"
wrote: How would you mount a windpilot when there is an outboard in the middle of the stern? Not too many off shore cruising boats have that issue. Use a tiller pilot instead. |
Wind-vane self steering .. questions, thoughts, ..
Lauri ,, I looked at the Windpilot Windvane by searching Google on net.
Very interesting ,, Now, where would I go to buy one? While I may not know much about them, it didn't seem as if there was much to them. Any ideas on where to shop for one .. Any idea on price .. thanks, ------------- "Lauri Tarkkonen" wrote in message ... In .com " writes: I've used wind vanes on passages and agree that they are very good things. I've even considered putting one on my catamaran which has carried me many thousands of off shore miles. However, I believe that the costs associated with vanes are too high compared to the benefits on my boat. Each case will be different, but here is my thinking on this for my boat: Because it is different for different boats, it is perhaps necessary to bring some other angles into this. I. Benefits: 1) wind/water powered, works even if engine and electrical fail. If you have a "servo-pendulum" windvane, where the boat speed is giving the mechanical power to steer the boat is is superior to cheap tillerpilots, as the boat speed will determine the speed and power of rudder action, as the cheap tillerpilots have electric motor of single speed. 2) simple can be fixed in remote locals. Tolerates better water than electronic gears, failure rates lover. Thus more reliable. 3) power savings allow for greater use of electronic nav aids like RADAR. 4) silent. 5) amusing. 6) looks salty. II. Costs: 1) very expensive compared to electronic self steering unless home built. Expensive compared to cheap electronics, but one should not compare the price of a state of the art windvane to the cheapest electronic pilots. 2) Adds a lot of weight to the end of the boat reducing available payload, increasing ptiching moment and increasing drag. Speed and seakeeping costs are larger on total and percantage basis as boats get lighter and faster. Windpilot Pacific (boats from 30 to 65 feet) weights 44 lbs (20 kg), I would not call this a lot. I am positive that in a 40 foor boat you can not see or feel the difference in pitching. 3) Add wind and water drag. Drag increases greatly as boat velocity increases so fast boats pay more than slow ones here, too. Applies only for multihulls and ULDB boats, not on the majority of cruising boats. 4) Does not function in calms. I have not seen a sailing boat moving in calm. If you are motoring in calm you can use the tiller pilot. If there is enough wind to move the boat for some 3 knots, there is enough wind to steer with the Windpilot. 5) Functions poorly or even dangerously when boat speed approaches wind speed. Again, a problem only for fast boats. Racing multihuls and ULDB:s, not ordinary cruising boats. 6) Exposed to elements, part failures, eg oars and vanes, common. Is not true for the good ones. I would dare to make a bet that a proper windvane, say Windpilot, will outlast almost any electronic pilot. Fast boats will put more strain on the gear and should expect greater failure rates. The same applies to electronic gear. 7) Increased dock fees based on LOA. Not true for Windpilot Pacific. When you turn the oar up, it will be inside the stern level. I would not recommed the windvanes with steering rudders, as they are more vulnerable in the stern. Some makes are taking much more space behind the boat, avoid them (Monitor, Aries etc.) 8) Complicates davit arrangements Some of the complications can be avoided by crafty plannind. 9) May make boat more difficult to manuver esp. in reverse. Do not buy one with own steering rudder, because it is a nuisance when manouvering. 10) Setting and retrieving oar or rudder can be difficult. Depends on the make. Why to buy one where this is true. In Windpilot Pacific it is very easy, you just let it fall into the sea and you pull it up by a piece of string. 11) Does not steer a compass course, makes DR much more diffiuclt. I do not know why you should steer a sailboat with a windvane to a compas course, but if you really need to do it, you can take the smallest and cheapest autopilot, and let it steer you servo-pendulum windvane instead of the wind. By the way, I do not see the point of this, as the sailing boat does not sail by itself to a compas course accurate enough for DR. 12) Look industrial. You may keep your opinion on the looks. - Lauri Tarkkonen -- Tom. |
Wind-vane self steering .. questions, thoughts, ..
Lauri Tarkkonen wrote:
In .com " writes: .... Because it is different for different boats, it is perhaps necessary to bring some other angles into this. I agree with you and I want to make it clear that the "benefits" and "costs" I listed were in relation to my current boat which is a moderatly quick and light multihull. I think that the percentage of light fast boats in the "serious" cruising fleet here in the Pacific is growing quickly but as you rightly point out a significant majority of the boats out here are well suited to wind-vane steering. Long range cruisers in small boats (say less than 65 feet) that can use wind vane steering probably ought to use it and will probably love it. .... II. Costs: 1) very expensive compared to electronic self steering unless home built. Expensive compared to cheap electronics, but one should not compare the price of a state of the art windvane to the cheapest electronic pilots. Here in the States you can get a pretty nice gyro assised AP unit for about half the price of quality vane set-up. My B&G system cost me about the same as a vane but has a lot more functionality. YMMV. 2) Adds a lot of weight to the end of the boat reducing available payload, increasing ptiching moment and increasing drag. Speed and seakeeping costs are larger on total and percantage basis as boats get lighter and faster. Windpilot Pacific (boats from 30 to 65 feet) weights 44 lbs (20 kg), I would not call this a lot. I am positive that in a 40 foor boat you can not see or feel the difference in pitching. Here I disagree. I've delivered boats in "cruise" mode and then sailed them in "race" mode and the differences are astounding. Race mode isn't just faster, it more comfortable if slowed to the same speed as cruise mode, too. I grant you that this may be a hard sell here in rbc, but weight in the ends of boats is very bad. If you put 20 kg on the stearn of most 40 ft boats the stearn will sink a cm or two. This doens't seem signifcant. Typically the owner will just move a bit of junk foreward to bring the boat on to her lines. The pitching moment has been increased by the 20 kg times the square of it's distance from the center of pitching and has also been increased by moving the other stuff to re-trim the boat. At this point the amout of time it takes for the boat to respond to a wave has been increased noticably. At least noticably to those of us who sail upwind in winds of force 6 and greater and have been spoiled by boats that do this well... .... 6) Exposed to elements, part failures, eg oars and vanes, common. Is not true for the good ones. I would dare to make a bet that a proper windvane, say Windpilot, will outlast almost any electronic pilot. I've watched 5 "classes" come through the Pacific milk run and vane failure is pretty common, but you don't need to find an EE to fix it... Fast boats will put more strain on the gear and should expect greater failure rates. The same applies to electronic gear. Not really. A well designed rudder will tend to keep steering loads light at the quadrant or tiller even at high speeds which is all the AP will feel. .... 12) Look industrial. You may keep your opinion on the looks. Sorry, I listed looks in both categories. The OP says he like them so they would be a benefit for him. .... -- Tom. |
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