Hey Ron, I think you meant feathering prop right? I don't recall PYI making a folding prop. And you're right the 2 blade just doesn't transfer the power to the water as efficiently. It is likely that the hull clearance has limited the size of your prop to 16". In this case more pitch is the only way to get more thrust from the prop. This could cause the engine to not reach full rated speed. Remember frequently running the engine at ~80% load is best for it.
Josh On Jan 12, 2015 11:42 AM, "Ron Ricci via CnC-List" <cnc-list@cnc-list.com> wrote: > My C&C 37+ has a 30 HP Yanmar 3HM35F with a two-bladed folding PYI Max > Prop. I don't know the diameter or pitch settings. At around 2500 rpm, > the boat can make about 5 knots, beyond that I just get more noise at max > engine speed of about 3000 RPM. My feeling the prop is not very efficient > but probably presents very little drag when sailing. If I wanted the boat > to go faster on the engine a new prop would be in order. The engine is > fine for my boat. > > > > Regards, > > *Ron* > > Ronald V. Ricci > > S/V Patriot > > C&C 37+ > > Bristol, RI > > ron.ri...@1968.usna.com > > > > > > > > > > *From:* Danny Haughey [mailto:djhaug...@juno.com] > *Sent:* Monday, January 12, 2015 7:10 AM > *To:* cscheaf...@comcast.net; cnc-list@cnc-list.com > *Subject:* Re: Stus-List C&C 37+ engine size > > > > I think my point is; > > > > Where we sail there are some pretty good currents and the chop picks up > quite often. Sometimes, you have to make it home heading into both. > That's when you want the extra hp. We sometimes have guests that get a > little nervous when the conditions get exciting and we try to get them in > as quickly as possible. Sure, you can move along at hull speed in > favorable conditions but, the only time I'd be able to notice that the > stern dug in a few inches would be in the harbour, sometimes. We almost > never experience flat water and are typically dealing with a 3 to 4 knot > current. Sometimes it is our favor and usually try to time our trips so it > is. But day sailing, I don't really care as much. I sometimes could only > get 3 knots under full power trying to round a mark to get into a harbour. > That can be a little unnerving. > > > > Danny > > > > > > From my Android phone > > > -------- Original message -------- > From: Chuck S <cscheaf...@comcast.net> > Date: 01/11/2015 11:45 PM (GMT-05:00) > To: Danny Haughey <djhaug...@juno.com>,"CNC boat owners, cnc-list" < > cnc-list@cnc-list.com> > Subject: Re: Stus-List C&C 37+ engine size > > ". . . bigger is better. . . "? Is a bigger booty better? Will a bigger > anchor make my sailboat go faster? > > What helps sailing is "no engine". Light means flight. > > Research the brochures and look to buy a boat with the "designed right > size engine", not bigger. An upgrade would be a smaller diesel w a turbo. > Just sayin. > > > > Chuck > > > > > ------------------------------ > > *From: *"Danny Haughey via CnC-List" <cnc-list@cnc-list.com> > *To: *cnc-list@cnc-list.com > *Sent: *Sunday, January 11, 2015 7:54:45 AM > *Subject: *Re: Stus-List C&C 37+ engine size > > > > Ok well, I guess it is adequate then. I just tend to see 40 hp engines in > most 40 footers. > > > > Maybe not be the ideal and will be a bargaining point if it comes to that. > > > > Bigger is better in this instance I think... > > > > Thanks for the insights guys! > > > > Danny > > > > > > From my Android phone > > > > > -------- Original message -------- > From: allen via CnC-List <cnc-list@cnc-list.com> > Date: 01/10/2015 3:53 PM (GMT-05:00) > To: Robert Abbott <robertabb...@eastlink.ca>,cnc-list@cnc-list.com > Subject: Re: Stus-List C&C 37+ engine size > > > > Our 30-2 has 20 hp Universal and easily reaches hull speed in light to > calm conditions. Originally it was powered by an 18 hp Universal that > netted 16. > > > > Allen Miles > > s/v Septima > > > > *From:* Robert Abbott via CnC-List <cnc-list@cnc-list.com> > > *Sent:* Saturday, January 10, 2015 3:41 PM > > *To:* Danny Haughey <djhaug...@juno.com> ; cnc-list@cnc-list.com > > *Subject:* Re: Stus-List C&C 37+ engine size > > > > Danny: > Some say if you have one hp per foot of boat, you are adequately powered > for a sailboat. A 35 hp diesel in a 37+ seems adequate to me. > > > > Rob Abbott > AZURA > C&C 32 - 84 > Halifax, N.S. > > > > > On 2015/01/10 12:30 PM, Danny Haughey via CnC-List wrote: > > Hi Guys, > > > > I'm eyeing a 1989 37+ but it has a 35 HP universal diesel. That, seems > kind of small for a nearly 40' boat. doesn't it? > > > > Danny > > > > > ------------------------------ > > _______________________________________________ > This List is provided by the C&C Photo Album. > > > > Please donate to the C&C Photo Album to keep this list free for all > subscribers. > > > > Email address: > CnC-List@cnc-list.com > To change your list preferences, including unsubscribing -- go bottom of > page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > > > > _______________________________________________ > This List is provided by the C&C Photo Album. > > > > Please donate to the C&C Photo Album to keep this list free for all > subscribers. > > > > Email address: > CnC-List@cnc-list.com > To change your list preferences, including unsubscribing -- go bottom of > page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > > > > > _______________________________________________ > This List is provided by the C&C Photo Album. > > Please donate to the C&C Photo Album to keep this list free for all > subscribers. > > Email address: > CnC-List@cnc-list.com > To change your list preferences, including unsubscribing -- go bottom of > page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > >
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