When sailing how do I get the prop in the correct position or collapsed. Do I put the transmission in rev? I have a 2 blad mertec folder prop and a 2gm20F Yanmay and a Kenzaki KM2P transmission?
On Wed, Jan 15, 2014 at 12:48 PM, Jerome Tauber <jrtau...@aol.com> wrote: > I had a 29-2 for 10 years. It is actually a 28.5 foot boat with a 13 hp > engine. I used a martec folding prop and it worked fine. If I were going > to a new prop kiwi props are lighter, less drag and will outperform the > heavy brass bronze props made by Gori, Flexofold, etc. They are also more > economical and adjustable. A friend put one on his Sweden 38 and he raves > about it. Jerry. C&C 27-v. > > Sent from my iPhone > > On Jan 15, 2014, at 12:32 PM, "Rick Brass" <rickbr...@earthlink.net> > wrote: > > I’m a bit surprised at the recommendation from Flex-o-fold. Seems like a > lot of prop for a boat that is essentially 30 ft with a 15 HP engine. > > > > For perspective, a friend’s J/30 with an 18HP Yanmar has a 12x9 Martec. > The Gori for my C&C 38 with a 36 HP Universal @3000 RPM is a 16x10, and the > Martec recommendation was 16x10 ½. > > > > Suggest you contact Flex=o=fold and discuss the recommendation with them. > They may have made a mistake in one of the inputs for the recommendation. > For example, the reduction gear: A prop for a 2:1 reduction gear would have > more pitch than one for a 1.5:1 reduction. IIRC there are more than 1 > reduction gears available on the Yanmar engines. > > > > I would also contact Campbell, MaxProp, and Gori to see what they > recommend. > > > > Rick Brass > > > > *From:* CnC-List > [mailto:cnc-list-boun...@cnc-list.com<cnc-list-boun...@cnc-list.com>] > *On Behalf Of *Martin Kane > *Sent:* Wednesday, January 15, 2014 10:01 AM > *To:* cnc-list@cnc-list.com > *Subject:* Stus-List Prop Size C&C 29-2 > > > > I’d like to tap into the collective experience of C&C 29-2 and/or Yanmar > 2GM (15hp @3600) owners. > > > > My 29-2 , acquired 3 years ago, had a 15x9 3 blade fixed prop installed > and 15x10 2 blade Gori spare. This was my first diesel engine and initially > I was quite pleased when I could reach 5knts at about 1800 +/- rpm and > would top out around 2200 rpm. After learning more about diesels I realized > the boat was overpropped. The next season I installed the 15x10 Gori and > the overpropping is worse – black smoke starting around 2100rpm and reduced > ability to push thru wind/waves. The Yanmar tach shows 3600 max rpm in > neutral and also matches the reading on a laser tach at 2000rpm. > > > > I’m looking for a new prop and am considering a Campbell Sailor, 2 blade > Flexofold, or 2 blade Max Prop. On the basis of the current performance > and C&C owner’s manual I was thinking that a correctly sized 2 blade prop > would be 14” diameter and 8 or 9” pitch. > > I submitted a sizing/quote request to Flexofold and they recommended a > 15x11 – which was not what I was expecting. > > > > I’d be grateful to hear what type/size props other listers have on their > 29-2s or Yanmar 2GM-15s and how satisfied they are. > > > > Martin > > C&C 29-2 Recalculating > > Mimico Cruising Club > > > > _______________________________________________ > > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com > CnC-List@cnc-list.com > > > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com > CnC-List@cnc-list.com > > -- *At sea, I learned how little a person needs, not how much.- Robin Lee Graham*
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