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post #3 of Old 09-19-2007
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Thumbs up Scientific wonder ???

I don't know about the scientific wonder term. All Roger MacGregor did was take the rotating mast off a catamaran and adapt is to his boat design.

Does it work? Yes it does give the Mac 26M better speed ... when it works. It hinders performance when it doesn't. The mast sits on a stack of three washers and rotates to follow wind pressures on the main (at least that's the theory). In reality, improper tension on the standing rigging and/or "dry" washers can lead to a mast that rotates to one side and stays there (and that really screws with the air flow).

Like anything on a boat, it is a maintenance issue. Some people report problems, most don't. Blue Water Yachts sells an after-market ball bearing assy ($20) as a replacement for the washer stack. Took me 15 minutes to install and my mast rotates freely in even the lightest of winds.

`99 Beneteau Oceanis 352, #282 WiTCHCRAFT
Milwaukee, WI
Sailing Lake Michigan and the Great Lakes
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