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Uh huh, and the point would be?
"JAXAshby" wrote in message ... Rosalie, your prop was also turning while you were running the engine. that alone is one hell of a drag. "Paul L" wrote: You will definitely will see a decent speed improvement under sail with a folding prop. Depending on the prop you buy, you should see better power/control in reverse too. They are very reliable now, so I don't think that is a down side. The biggest downside is their cost. I have a Max prop and think it great. Paul www.jcruiser.org "MLapla4120" wrote in message ... I'm going to re-power soon and am also going to get new shaft and prop. It seems that in my boat class (Westsail 32), some people are going to folding props to help speed under sail. I'm for increased speed, but also want reliability. My current bronze propeller is pitted and old. Every time I turn around and look at it, it is full of sea growth. That makes me think I'm getting poor performance. So, I'm for an improvement, but I am unsure of what kind. Any opinions from boaters that have encountered this situation would be appreciated. We have a feathering prop (vs a folding prop) and we do get an increase of about 1/2 knot under sail, and it also backs better under power. I haven't tried to quantify the backing under power - it is just what we feel. Disadvantages are - you lose a bit of power forward because the blades are flat and the prop takes a bit more maintenance than a fixed prop. [We were sailing but had the engine on in neutral so the prop was not feathered - we were running the refrigeration- and when we had finished that, we turned off the engine and feathered the prop, and our speed increased 1/2 knot - same wind and current. Now I know this is not a completely scientific test, but it is significant to us. There are also people in our group who did tests with a fixed prop over a measured course, and then did the same tests with a folding prop over the same course and found a similar result.] grandma Rosalie |
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