I believe he meant 28 nm/gal. I consistently run 1 1/4 - 1 1/2 hr on an internal tank of gas(1/4 gal) at 3.8 - 4 kts without running the tank dry. This is around 24 nm/gal without accounting for what is left in the tank on each refill. Message here is "don't buy a 3 gallon gas tank as it will last you a couple of years if the wind is available.:-) Doug Kelch Jim Sadler <jimsadler@jascopacific.com> wrote: Thanks Skipper Did you mean 28 nautical miles or 2.8 nautical miles per gallon? Will the 2hp actually move an M-15 at 4 Knots? Captain Jim Sadler Skipper sailing vessel Pelican M-15 -----Original Message----- From: montgomery_boats-bounces+jimsadler=jascopacific.com@mailman.xmission.com [mailto:montgomery_boats-bounces+jimsadler=jascopacific.com@mailman.xmis sion.com]On Behalf Of Gary M Hyde Sent: Wednesday, August 29, 2007 4:06 PM To: For and about Montgomery Sailboats Subject: Re: M_Boats: M-15 Prop pitch M15 theoretical hull speed is 4.8 knots. The Honda 2hp only has one size prop available as far as I know, and it works pretty well on the M15. If you back off the throttle to about 4 knots, you can get ~28 nautical miles per gallon in calm waters. --Gary Hyde 2005 M17 sailboat #637 'Hydeaway 2' We can't change the wind, but we can trim our sails. On Aug 29, 2007, at 12:24 PM, Sandyal55@aol.com wrote:
In a message dated 8/29/2007 11:24:59 AM Mountain Standard Time, jimsadler@jascopacific.com writes:
Thanks for all of the great advise on outboard motors. I have narrowed it down to 4 cycle, long shaft, 2 to 3 HP.
Have any of you skippers used a special prop on the motor? Seems like the prop pitch and diameter needs to match the the shaft RPM, motor power curve and the M-15 haul speed. What is the haul speed of M-15? Since the Pelican is still in keel surgery I have no way to make a speed run.
sincerely Captain Jim Sadler skipper sailing vessel Pelican M-15
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I doubt that prop pitch is very important on such a light boat. Those considerations are more for a heavy displacement yacht.
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