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"Lloyd Sumpter" wrote: On Tue, 21 Oct 2003 01:13:46 +0000, Jere Lull wrote: Lloyd Sumpter wrote: On Mon, 20 Oct 2003 00:45:25 +0000, Jere Lull wrote: Yes, they're expensive, but our 3 blade MaxProp is nearly as efficient as a 2-blade Michigan Wheel, reverse is MUCH, MUCH better and we gain a full knot under sail under many conditions. We got the one that can be adjusted (out of the water), so it's slightly adjustable. Well, for virtually 1/2 the price of the new engine, they'd better walk the dog, paint the boat, fix the head, give me sexual satisfaction and go out and get beer and pizza afterwards! ![]() I'm leaning towards a $500 fixed 3-blade now, either the Campbell Sailor or the MI Wheel "Sailor" line. [SNIP] BTW, we paid about $2k for our MaxProp just over a year ago. A few minutes after I paid for ours, I chatted with a Catalina 38 owner that got the exact same prop (16" 3 blade). [That's the largest prop they'd sell me; we could fit a 20" with our clearance and would have gotten one if they'd let us -- I'm of the bigger-prop-is-better crowd.] The $1500 differential (possibly less with a Catalina 36) isn't 1/2 the price of the new engine. Where do you get a MaxProp? Know any place in Canada? (I ask because these days it costs $100 or so to get ANYTHING across the border!) I searched the web and all I found was Property Managers. The "1/2 the price of the engine" came from the quote I got for an AutoProp: $3K. And the engine is about $6K (About $8500 CDN). (BTW: I'm not really concerned with reverse - after nearly 15 yrs, I've gotten used to Far Cove's propwalk and use it to my advantage. But extra punch in fwd would be nice!) I think we got ours from PYI http://www.pyiinc.com/ MaxProp themselves are at http://www.max-prop.com/ You might try http://www.vicprop.com/sales.htm who are in Canada and say they handle the MaxProp. I don't think you will get an extra punch in fwd. As I understand it (and I may be wrong), the reason that you get more reverse is that the prop paddles are not 'cupped' or angled like the fixed prop ones are, but are flat. The cupping is for maximum performance in forward gear, and it makes reverse less efficient. If you have a flat prop, then it is equally good in both directions. grandma Rosalie S/V RosalieAnn, Leonardtown, MD CSY 44 WO #156 http://home.mindspring.com/~gmbeasley/id2.html |
#2
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On Tue, 21 Oct 2003 16:18:38 GMT, Rosalie B.
wrote: I don't think you will get an extra punch in fwd. As I understand it (and I may be wrong), the reason that you get more reverse is that the prop paddles are not 'cupped' or angled like the fixed prop ones are, but are flat. The cupping is for maximum performance in forward gear, and it makes reverse less efficient. If you have a flat prop, then it is equally good in both directions. The MaxProp turns the blade when reversing, presenting the same "forward" edge of the blades in both forward and reverse, thus providing a very good thrust also in reverse since there is no compromise between fwd and reverse efficiency in the blade design. IMO, the only "better" prop than MaxProp is the Gori folding-feathering (or what to call it), but that's even more expensive. /Marcus -- Marcus AAkesson Gothenburg Callsigns: SM6XFN & SB4779 Sweden Keep the world clean - no HTML in news or mail ! |
#3
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Rosalie B. wrote:
I don't think you will get an extra punch in fwd. As I understand it (and I may be wrong), the reason that you get more reverse is that the prop paddles are not 'cupped' or angled like the fixed prop ones are, but are flat. The cupping is for maximum performance in forward gear, and it makes reverse less efficient. If you have a flat prop, then it is equally good in both directions. Agreement, from our experience. (Dang, I snipped my comment that our 16" 3-blade MaxProp was *nearly* as efficient as a 15" two-blade. Sorry.) -- Jere Lull Xan-a-Deux ('73 Tanzer 28 #4 out of Tolchester, MD) Xan's Pages: http://members.dca.net/jerelull/X-Main.html Our BVI FAQs (290+ pics) http://homepage.mac.com/jerelull/BVI/ |
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