And BTU per liter is higher for diesel. Josh On Jan 13, 2015 1:43 PM, "Russ & Melody via CnC-List" <cnc-list@cnc-list.com> wrote:
> > Fuel cost comparison is a red herring. > For most people on this list the amount spent on motoring boat fuel this > winter is remarkably the same whether the auxiliary power is electric, > gasoline or diesel. :) > > Cheers, Russ > *Sweet *35 mk-1 > > At 07:13 PM 12/01/2015, you wrote: > > As gasoline engines go the Atomic 4 has a flat torque curve. > There are various version of the A4 around, but the common 30 HP > variant had about 35 ft/lbs at 1000 RPM, and "peaks" around > 43 ft/lbs. From about 1800 RPM to 3500 RPM it stayed within > about +/- 1.5 ft/lbs. > > If you compare the Beta Marine 25 HP diesel ( BD902 ) it has a > similar curve, maybe +/- 2.5 ft/lbs from 1600 to 3600. > > Since HP come from torque x RPM the HP curves are similar. > > On a 27 - 32 moderate displacement sailboat the Atomic 4 and > a 1:1 transmission was an adequate match. A target would be to > maintain 70 - 80% of hull speed at around 1800 RPM with some > head wind and seas. On an A4 that would be around 13 HP. > > Fuel economy? I went by a gas station earlier today. Gas was > $0.81 a litre, diesel was $1.15 a litre. Ouch! > > Michael Brown > Windburn > C&C 30-1 > > > _______________________________________________ > 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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