Without the 2:1 reduction gear no one with a displacement hull boat is getting more than maybe 2400-2600 RPMs out of the A4.
Joe Della Barba j...@dellabarba.com From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Chuck S via CnC-List Sent: Thursday, January 29, 2015 6:30 PM To: Bill Coleman; CNC boat owners, cnc-list Subject: Re: Stus-List Universal M4-30 (Eric Baumes) FWIW, The atomic 4 was supposed to achieve 30Hp at 3500 RPM, less Hp at lower RPMs. Found this on website selling engines replacements: "Several Beta Marine diesel engines are available to replace the Atomic 4 gasoline engine for your Sailboat engine repower depending upon the vessel's displacement. General guidelines for displacement hulls follow, but please contact Joe DeMers for a specific recommendation concerning your boat and application. * Boats displacing up to 7,500 pounds may use the Beta 10 Ten engine. * Boats up to 10,000 pounds may use the Beta Marine 13.5 hp engine. * Boats between 10,000 and 14,000 pounds need the 20 hp Beta Marine engine. * Boats between 14,000 and 18,000 pounds require the 28 hp Beta Marine engine." Google, "Beta Marine" to find it. Chuck Resolute 1990 C&C 34R Broad Creek, Magothy River, Md _____ From: "Bill Coleman via CnC-List" <cnc-list@cnc-list.com <mailto:cnc-list@cnc-list.com> > To: cnc-list@cnc-list.com <mailto:cnc-list@cnc-list.com> Sent: Thursday, January 29, 2015 5:41:49 PM Subject: Re: Stus-List Universal M4-30 (Eric Baumes) That’s what she s- Darn, I’ve got to stop saying that! Bill Coleman C&C 39 I have to ask the question: will it fit in the hole? That's a lot of engine for a 29ft boat. The A-4 only put out About 18hp at the RPM that it probably generated pushing your boat. My yanmar 2gm20f seems to have more power than my A-4 did YMMV ROB _______________________________________________ Email address: CnC-List@cnc-list.com <mailto:CnC-List@cnc-list.com> To change your list preferences, including unsubscribing -- go to the bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
_______________________________________________ Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go to the bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
