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#1 2005-11-07 09:05:19

Guest

Folding Prop

Hello fellow members:
At one time I sent out the question "are C&C 27’s a fast boat? Am I on the right boat to compete with the rest of the fleet"? Well all I can say is that this was the first year we had our 1973 Mark II C&C named the Sweet Gherkin (pickle boat) in the water. The crew was very green and so is the boat. All we wanted to do was have a lot fun and just get familiar with the boat. Well, with a good teacher and helpful hints from this sight we ended up taking third in spring, third in fall, second in long distance and second overall in the series not to mention the additional nine place flags we earned and won.
There are still a few strong boats in our class that we would like to better compete with. These boats are like bars of soap with sails and in the lighter air they tend to pull away.
So now here lies the question.
I am looking to add a folding prop to our C&C and I’m not sure on what type of application will best fit our Mark II. The boat has a 7/8 shaft but I’m getting lost in determining what I need for the size and pitch of the blades. I am hoping that this with other adjustments and experience will help with the lighter air issues we encounter during our racing.
Thanks, Paul
Sweet Gherkin

#2 2005-11-08 00:13:40

davidww1
Member

Re: Folding Prop

A folding prop will definitely improve your sailing experience. You'll notice the effect most particularly in light air, but I think a boat feels better balanced, just more "right" when you don't have all that turbulence and drag under you.

Unless someone has replaced the prop shaft, you have a 7/8" shaft with an SAE taper. If you have an Atomic 4, you need RH (right-hand) blades. I had an A4 turning a Flexofold prop with 12x7 RH blades and I thought that was just about perfect, in the sense of driving the boat well in forward and reverse.

As props do differ, that recommendation should be treated as fairly specific to Flexofold. The original 2-blade is 11x7 RH and I seem to remember that my old Martec had slightly less pitch than the Flexofold.

You'll find a lot more discussion of props and pitch using the Search function. If you search for 'prop', you'll get a lot of hits (our search function doesn't discriminate between 'prop' and 'properly'), but you can scroll through the off-topic ones quite quickly.

David Weatherston
Towser, Toronto
C&C 27 Mk IV

Last edited by (2006-01-11 04:52:49)


David Weatherston
Towser, Toronto
C&C 27 Mk IV

Offline

#3 2006-01-10 10:21:27

Guest

Re: Folding Prop

My 1976 C&C 25 owners manual says that the 25 Vire, 27 and 30 with standard Atomic Four had and original equipment option (supplied by C&C) of a 12 x 5 x 7/8" R. H. folding propeller.
Cheers!
Jammin'

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