Cal 29 prop size

I have a 1972 Cal 29-2 with a Bukh 10hp diesel. It currently has a 12" X 12" solid prop. Does this sound correct? I don't have a problem when underway, the boat will do hull speed in calm water, but backing down and acceleration are pathetic. Joe

What is the boat's waterline length, the reduction gear ratio, and at what rpm does the engine make it's maximum horsepower? Joe DeMers Sound Marine Diesel LLC www.soundmarinediesel.com From: "jjmcclosk" <jj… [at] yahoo.com> To: <Ca… [at] yahoogroups.com> Sent: Wednesday, February 25, 2009 10:27 PM Subject: [Cal_Boats] Cal 29 prop size >I have a 1972 Cal 29-2 with a Bukh 10hp diesel. It currently has a 12" > X 12" solid prop. Does this sound correct? I don't have a problem when > underway, the boat will do hull speed in calm water, but backing down > and acceleration are pathetic. > Joe > > > > ------------------------------------ > > Yahoo! Groups Links > > > > > > -- > No virus found in this incoming message. > Checked by AVG. > Version: 7.5.557 / Virus Database: 270.11.3/1969 - Release Date: 2/24/2009 > 6:43 AM > >

Waterline 24', engine RPM @10hp= 3000, reduction gear 2.5: 1 --- On Thu, 2/26/09, Joe DeMers <je… [at] mindspring.com> wrote: From: Joe DeMers <je… [at] mindspring.com> Subject: Re: [Cal_Boats] Cal 29 prop size To: Ca… [at] yahoogroups.com Date: Thursday, February 26, 2009, 8:10 AM What is the boat's waterline length, the reduction gear ratio, and at what rpm does the engine make it's maximum horsepower? Joe DeMers Sound Marine Diesel LLC www.soundmarinedies el.com From: "jjmcclosk" <jjmcclosk@yahoo. com> To: <Cal_Boats@yahoogrou ps.com> Sent: Wednesday, February 25, 2009 10:27 PM Subject: [Cal_Boats] Cal 29 prop size >I have a 1972 Cal 29-2 with a Bukh 10hp diesel. It currently has a 12" > X 12" solid prop. Does this sound correct? I don't have a problem when > underway, the boat will do hull speed in calm water, but backing down > and acceleration are pathetic. > Joe > > > > ------------ --------- --------- ------ > > Yahoo! Groups Links > > > > > > -- > No virus found in this incoming message. > Checked by AVG. > Version: 7.5.557 / Virus Database: 270.11.3/1969 - Release Date: 2/24/2009 > 6:43 AM > >

12 x 15, 2 blade [ this prop has a large blade area, making it an excellent compromise between a 3 blade and a 2 blade prop ] 12 x 14, 3 blade Joe DeMers Sound Marine Diesel LLC www.soundmarinediesel.com ----- Original Message ----- From: Joseph McCloskey To: Ca… [at] yahoogroups.com Sent: Thursday, February 26, 2009 11:48 AM Subject: Re: [Cal_Boats] Cal 29 prop size Waterline 24', engine RPM @10hp= 3000, reduction gear 2.5: 1 --- On Thu, 2/26/09, Joe DeMers <je… [at] mindspring.com> wrote: From: Joe DeMers <je… [at] mindspring.com> Subject: Re: [Cal_Boats] Cal 29 prop size To: Ca… [at] yahoogroups.com Date: Thursday, February 26, 2009, 8:10 AM What is the boat's waterline length, the reduction gear ratio, and at what rpm does the engine make it's maximum horsepower? Joe DeMers Sound Marine Diesel LLC www.soundmarinediesel.com ----- Original Message ----- From: "jjmcclosk" <jjmcclosk@yahoo. com> To: <Cal_Boats@yahoogrou ps.com> Sent: Wednesday, February 25, 2009 10:27 PM Subject: [Cal_Boats] Cal 29 prop size >I have a 1972 Cal 29-2 with a Bukh 10hp diesel. It currently has a 12" > X 12" solid prop. Does this sound correct? I don't have a problem when > underway, the boat will do hull speed in calm water, but backing down > and acceleration are pathetic. > Joe > > > > ------------ --------- --------- ------ > > Yahoo! Groups Links > > > > > > -- > No virus found in this incoming message. > Checked by AVG. > Version: 7.5.557 / Virus Database: 270.11.3/1969 - Release Date: 2/24/2009 > 6:43 AM > > ------------------------------------------------------------------------------ No virus found in this incoming message. Checked by AVG. Version: 7.5.557 / Virus Database: 270.11.3/1969 - Release Date: 2/24/2009 6:43 AM

My prop guy did comment that a 2:1 gear would be preferred, so a 12 x 9, 3 blade prop could be used. That shallower pitch is preferable for a sailboat. Joe DeMers Sound Marine Diesel LLC www.soundmarinediesel.com ----- Original Message ----- From: Joe DeMers To: Ca… [at] yahoogroups.com Sent: Thursday, February 26, 2009 12:45 PM Subject: Re: [Cal_Boats] Cal 29 prop size 12 x 15, 2 blade [ this prop has a large blade area, making it an excellent compromise between a 3 blade and a 2 blade prop ] 12 x 14, 3 blade Joe DeMers Sound Marine Diesel LLC www.soundmarinediesel.com ----- Original Message ----- From: Joseph McCloskey To: Ca… [at] yahoogroups.com Sent: Thursday, February 26, 2009 11:48 AM Subject: Re: [Cal_Boats] Cal 29 prop size Waterline 24', engine RPM @10hp= 3000, reduction gear 2.5: 1 --- On Thu, 2/26/09, Joe DeMers <je… [at] mindspring.com> wrote: From: Joe DeMers <je… [at] mindspring.com> Subject: Re: [Cal_Boats] Cal 29 prop size To: Ca… [at] yahoogroups.com Date: Thursday, February 26, 2009, 8:10 AM What is the boat's waterline length, the reduction gear ratio, and at what rpm does the engine make it's maximum horsepower? Joe DeMers Sound Marine Diesel LLC www.soundmarinediesel.com ----- Original Message ----- From: "jjmcclosk" <jjmcclosk@yahoo. com> To: <Cal_Boats@yahoogrou ps.com> Sent: Wednesday, February 25, 2009 10:27 PM Subject: [Cal_Boats] Cal 29 prop size >I have a 1972 Cal 29-2 with a Bukh 10hp diesel. It currently has a 12" > X 12" solid prop. Does this sound correct? I don't have a problem when > underway, the boat will do hull speed in calm water, but backing down > and acceleration are pathetic. > Joe > > > > ------------ --------- --------- ------ > > Yahoo! Groups Links > > > > > > -- > No virus found in this incoming message. > Checked by AVG. > Version: 7.5.557 / Virus Database: 270.11.3/1969 - Release Date: 2/24/2009 > 6:43 AM > > ---------------------------------------------------------------------------- No virus found in this incoming message. Checked by AVG. Version: 7.5.557 / Virus Database: 270.11.3/1969 - Release Date: 2/24/2009 6:43 AM ------------------------------------------------------------------------------ No virus found in this incoming message. Checked by AVG. Version: 7.5.557 / Virus Database: 270.11.3/1969 - Release Date: 2/24/2009 6:43 AM

Joe Thanks for the info. Sounds like this would give me more thrust. Do you know if this size would apply to the Martec folding prop? --- On Thu, 2/26/09, Joe DeMers <je… [at] mindspring.com> wrote: From: Joe DeMers <je… [at] mindspring.com> Subject: Re: [Cal_Boats] Cal 29 prop size To: Ca… [at] yahoogroups.com Date: Thursday, February 26, 2009, 12:45 PM 12 x 15, 2 blade [ this prop has a large blade area, making it an excellent compromise between a 3 blade and a 2 blade prop ] 12 x 14, 3 blade Joe DeMers Sound Marine Diesel LLC www.soundmarinedies el.com ----- Original Message ----- From: Joseph McCloskey To: Cal_Boats@yahoogrou ps.com Sent: Thursday, February 26, 2009 11:48 AM Subject: Re: [Cal_Boats] Cal 29 prop size Waterline 24', engine RPM @10hp= 3000, reduction gear 2.5: 1 --- On Thu, 2/26/09, Joe DeMers <jedsail@mindspring. com> wrote: From: Joe DeMers <jedsail@mindspring. com> Subject: Re: [Cal_Boats] Cal 29 prop size To: Cal_Boats@yahoogrou ps.com Date: Thursday, February 26, 2009, 8:10 AM What is the boat's waterline length, the reduction gear ratio, and at what rpm does the engine make it's maximum horsepower? Joe DeMers Sound Marine Diesel LLC www.soundmarinedies el.com From: "jjmcclosk" <jjmcclosk@yahoo. com> To: <Cal_Boats@yahoogrou ps.com> Sent: Wednesday, February 25, 2009 10:27 PM Subject: [Cal_Boats] Cal 29 prop size >I have a 1972 Cal 29-2 with a Bukh 10hp diesel. It currently has a 12" > X 12" solid prop. Does this sound correct? I don't have a problem when > underway, the boat will do hull speed in calm water, but backing down > and acceleration are pathetic. > Joe > > > > ------------ --------- --------- ------ > > Yahoo! Groups Links > > > > > > -- > No virus found in this incoming message. > Checked by AVG. > Version: 7.5.557 / Virus Database: 270.11.3/1969 - Release Date: 2/24/2009 > 6:43 AM > > No virus found in this incoming message. Checked by AVG. Version: 7.5.557 / Virus Database: 270.11.3/1969 - Release Date: 2/24/2009 6:43 AM

All bets are off when using a Martec folding prop. These props are designed for racing, and have little in common with a fixed blade prop. Contact Martec for their suggestions. Joe DeMers Sound Marine Diesel LLC www.soundmarinediesel.com ----- Original Message ----- From: Joseph McCloskey To: Ca… [at] yahoogroups.com Sent: Thursday, February 26, 2009 12:51 PM Subject: Re: [Cal_Boats] Cal 29 prop size Joe Thanks for the info. Sounds like this would give me more thrust. Do you know if this size would apply to the Martec folding prop? --- On Thu, 2/26/09, Joe DeMers <je… [at] mindspring.com> wrote: From: Joe DeMers <je… [at] mindspring.com> Subject: Re: [Cal_Boats] Cal 29 prop size To: Ca… [at] yahoogroups.com Date: Thursday, February 26, 2009, 12:45 PM 12 x 15, 2 blade [ this prop has a large blade area, making it an excellent compromise between a 3 blade and a 2 blade prop ] 12 x 14, 3 blade Joe DeMers Sound Marine Diesel LLC www.soundmarinedies el.com ----- Original Message ----- From: Joseph McCloskey To: Cal_Boats@yahoogrou ps.com Sent: Thursday, February 26, 2009 11:48 AM Subject: Re: [Cal_Boats] Cal 29 prop size Waterline 24', engine RPM @10hp= 3000, reduction gear 2.5: 1 --- On Thu, 2/26/09, Joe DeMers <jedsail@mindspring. com> wrote: From: Joe DeMers <jedsail@mindspring. com> Subject: Re: [Cal_Boats] Cal 29 prop size To: Cal_Boats@yahoogrou ps.com Date: Thursday, February 26, 2009, 8:10 AM What is the boat's waterline length, the reduction gear ratio, and at what rpm does the engine make it's maximum horsepower? Joe DeMers Sound Marine Diesel LLC www.soundmarinedies el.com ----- Original Message ----- From: "jjmcclosk" <jjmcclosk@yahoo. com> To: <Cal_Boats@yahoogrou ps.com> Sent: Wednesday, February 25, 2009 10:27 PM Subject: [Cal_Boats] Cal 29 prop size >I have a 1972 Cal 29-2 with a Bukh 10hp diesel. It currently has a 12" > X 12" solid prop. Does this sound correct? I don't have a problem when > underway, the boat will do hull speed in calm water, but backing down > and acceleration are pathetic. > Joe > > > > ------------ --------- --------- ------ > > Yahoo! Groups Links > > > > > > -- > No virus found in this incoming message. > Checked by AVG. > Version: 7.5.557 / Virus Database: 270.11.3/1969 - Release Date: 2/24/2009 > 6:43 AM > > -------------------------------------------------------------------- No virus found in this incoming message. Checked by AVG. Version: 7.5.557 / Virus Database: 270.11.3/1969 - Release Date: 2/24/2009 6:43 AM ------------------------------------------------------------------------------ No virus found in this incoming message. Checked by AVG. Version: 7.5.557 / Virus Database: 270.11.3/1969 - Release Date: 2/24/2009 6:43 AM