Great story! When I bought windstar (33ii) she had the original very worn folding (non-geared) Martec. A series of vibrational mis-diagnoses let me through a brand new (2014) gori folding and a slightly too-large fixed two blade. The Martec was awful in reverse, attributed (by Martec) to wear. The difference between the new gori and the fixed two blade is effectively indiscernible under power incl. in reverse, but the folding prop rules under sail in light air. That said, I rarely parallel park in an 8 kt current. The gori is a work of art in bronze. I had been told that three blade fixed was the only way to get decent reverse.... Experts.... Props are a funny subject. There are strong opinions, but realistically, (and understandably) there is very little solid comparative data available for a given model of prop with a given boat. Anyway, the point of all this is to say that I think slippery boats really benefit from good folding or feathering props esp in light air, and I think that modern geared folding props are much better than those of the past, limiting the relevance of stories of past misadventures.
Dave Date: Tue, 22 Dec 2015 21:47:23 +0000 From: Martin DeYoung <mdeyo...@deyoungmfg.com> To: "cnc-list@cnc-list.com" <cnc-list@cnc-list.com> Subject: Re: Stus-List Folding props Message-ID: <23eae197cc1b594fa8793397ebcd357de36...@dmi3.dmi.local> Content-Type: text/plain; charset="utf-8" > The time it takes between putting her into reverse and actually moving > backward with flow over the rudder is what can take several seconds with a > folder? If other things are happening nearby (current, wind, pilings, etc.), > these few seconds can seem like a very long time!. Back in the mid 70?s I was crewing on a C&C 39. The local rock star sailmaker was onboard for an event on Lake Washington related to Seattle Yacht Club?s Opening Day parade. A few adult beverages may have been consumed in the process of crossing the lake to join a party at another competitor?s lake front home. When it was pointed out to the rock star he was pointing the 39?s bow into a covered slip, he quickly hit reverse (A4 engine, Martec folding prop) and added throttle. With the standard delay in actually retarding the vessel?s forward motion the 39?s forestay (Stearn?s twin stay IIRC) made a noticeable twanging sound as it hit the metal roof over the slip. It was hard to find the rock star at the party that afternoon. Years later that rock star became Calypso?s insurance agent. I don?t think he ever forgot how long it takes to reverse direction with a folding prop. Martin DeYoung Calypso 1971 C&C 43
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