For best speed when under sail.. let it spin or lock it in gear with blades up and down so as to be parallel to rudder. I'm not going to buy a folding prop. By the way, the boat (H34) backs perfectly with a 2 bladed prop. Spins on a dime forward or reverse. As the H31 is a twin, thought I would post here as well as on the bigger boat web site..
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Gail
Spin
Spinning wil sail faster than locked but will also cause most transmissions to turn without lubrication and cause wear. I cannot remember which transmissions are self lubricating but most are not. I lock mine in the vertical position thinking that position may result in less drag but?????????????.
Spinning wil sail faster than locked but will also cause most transmissions to turn without lubrication and cause wear. I cannot remember which transmissions are self lubricating but most are not. I lock mine in the vertical position thinking that position may result in less drag but?????????????.
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David
Actually
Gail if you check with most prop experts they say less drag for a fixed rather than a spinning prop.
Gail if you check with most prop experts they say less drag for a fixed rather than a spinning prop.
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Gail
expert
it is not my intention to start an arguement but I do not agree with the experts. It has always been my practice to unlock the prop for a knot or two increase in speed to catch or pass someone. My experience is that I always get an increase. I am sure others will comment.
it is not my intention to start an arguement but I do not agree with the experts. It has always been my practice to unlock the prop for a knot or two increase in speed to catch or pass someone. My experience is that I always get an increase. I am sure others will comment.
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Pete
Gail /unlocking the prop
Gail I know you do not want to start an argument but a spirted conversation is always a good thing! Let me first say you can believe whatever you believe about the prop and going faster lock or unlocked.However the technical data does not support your idea. As far as getting a "knot or two" extra to catch or pass someone there is no way unlocking the prop will give you that kind of extra speed.The prop just does not have that much drag!I know no amount of data will convince you but if it were true most people would sail with the prop spinning for the extra speed. You may very well get a boat speed increase but it is from something else you are doing, the only way to get a "knot or two extra" with the prop spinning is to have the engine spinning it!
Gail I know you do not want to start an argument but a spirted conversation is always a good thing! Let me first say you can believe whatever you believe about the prop and going faster lock or unlocked.However the technical data does not support your idea. As far as getting a "knot or two" extra to catch or pass someone there is no way unlocking the prop will give you that kind of extra speed.The prop just does not have that much drag!I know no amount of data will convince you but if it were true most people would sail with the prop spinning for the extra speed. You may very well get a boat speed increase but it is from something else you are doing, the only way to get a "knot or two extra" with the prop spinning is to have the engine spinning it!
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Bob Schmit
Torreson
Being a sailor who just went from a no problem prop-I pulled the outboard up and out of the water to a boat with an inboard and having seen this debate before, I decided to ask the experts on diesel at the Strictly Sail show in Chicago and the rep there said why lock it out? That puts stress on the tranny clutch too -having the water pressure pushing against the prop. He did ask what engine I had and when I told him it was a fresh water cooled 2gm20 he said it wouldn't hurt the tranny to let the prop spin. Now, on reflection, I don't know if that was his personal opinion or the company line...
Being a sailor who just went from a no problem prop-I pulled the outboard up and out of the water to a boat with an inboard and having seen this debate before, I decided to ask the experts on diesel at the Strictly Sail show in Chicago and the rep there said why lock it out? That puts stress on the tranny clutch too -having the water pressure pushing against the prop. He did ask what engine I had and when I told him it was a fresh water cooled 2gm20 he said it wouldn't hurt the tranny to let the prop spin. Now, on reflection, I don't know if that was his personal opinion or the company line...
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David
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Bob
As many opinions as there are sailors!
Wow, I'm confused! It seems that there are as many opinions on this subject as there are sailors. I'm sort of new to sailing, or at least to owning a boat. (1987 285) But when under sail I was told it was best to let the prop spin. In fact, on day my wife and I heard a "click, click, click..." sound coming from below. After looking all over the place I found the sound coming from the spinning prop or maybe the transmission area. I never heard this sound when under power but it does make me think, "What IS making that sound?" And know I'm wondering if it's doing some harm or is it much to do about nothing? Also, locking the trans in reverse? I've not heard that one before either. Not that I'm doubting the word of the writer. I'll be looking for more opinions on this subject but in the meantime I think I'll just let it spin.
Wow, I'm confused! It seems that there are as many opinions on this subject as there are sailors. I'm sort of new to sailing, or at least to owning a boat. (1987 285) But when under sail I was told it was best to let the prop spin. In fact, on day my wife and I heard a "click, click, click..." sound coming from below. After looking all over the place I found the sound coming from the spinning prop or maybe the transmission area. I never heard this sound when under power but it does make me think, "What IS making that sound?" And know I'm wondering if it's doing some harm or is it much to do about nothing? Also, locking the trans in reverse? I've not heard that one before either. Not that I'm doubting the word of the writer. I'll be looking for more opinions on this subject but in the meantime I think I'll just let it spin.
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Larry
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d j
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Bob Peters
heard reverse also
At a Yanmar diesel class, this question was asked and answer was to leave it in reverse when under sail. There isn't that much drag and it reduces wear on tran.
At a Yanmar diesel class, this question was asked and answer was to leave it in reverse when under sail. There isn't that much drag and it reduces wear on tran.
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