Don’t forget the Marvel Mystery Oil! Sent from my iPhone
On Aug 24, 2020, at 4:57 PM, Paul Wyand via CnC-List <cnc-list@cnc-list.com> wrote: Yes the atomic 4 is rated at 30 HP but no one uses it near its HP peak level of RPM. So most people in sailboats use about 18-20 HP of the usable 30. Some of the older power boats may have revved that engine up to the HP peak level. I don't think I ever pushed mine over about 2200 rpm so that was around 18 HP to move my C&C 33. Great engines, last a LONG time. But they are all getting long in the tooth now. On Mon, Aug 24, 2020 at 3:53 PM Rick Brass via CnC-List <cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>> wrote: I believe the difference is between rated HP and shaft HP, which is generally lower after things like transmission loss, accessory loads, and friction. IIRC, an A4 was rated as 30HP, but the shaft HP was something like 17or 18. Which is why an2 cylinder Yanmar is a suitable replacement foe an A4. Rick Brass Washington, NC From: CnC-List [mailto:cnc-list-boun...@cnc-list.com<mailto:cnc-list-boun...@cnc-list.com>] On Behalf Of Joe Della Barba via CnC-List Sent: Monday, August 24, 2020 2:15 PM To: cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com> Cc: Joe Della Barba <j...@dellabarba.com<mailto:j...@dellabarba.com>> Subject: Re: Stus-List 37+ Cruise Speed What the heck is a 13hp Atomic 4? Mine is 30 HP. Joe Coquina On 8/24/2020 1:26 PM, Daniel A. Willis via CnC-List wrote: My 1973 30' Mk 1 had a 13hp atomic four but was re-engine 12 years ago with a 20 hp Universal. She stops on a dime and handles very well with all that power. I suspect some might simply have been re-powered over the years as our Santiago was. ________________________________ _______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray _______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
_______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
