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 _______________________________________________ http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats I doubt that prop pitch is very important on such a light boat. Those considerations are more for a heavy displacement yacht. ************************************** Get a sneak peek of the all-new AOL at http://discover.aol.com/memed/aolcom30tour
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
_______________________________________________ http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats
I doubt that prop pitch is very important on such a light boat. Those considerations are more for a heavy displacement yacht.
************************************** Get a sneak peek of the all- new AOL at http://discover.aol.com/memed/aolcom30tour _______________________________________________ http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats
The Honda 2 hp 4 cycle uses a plastic prop. There was an article in Messing about in boats about how to change the pitch by clamping the tip of the blade, using a heat gun at the base and twisting in the desired direction. The tip clamp can include a longer piece of wood to help set the desired angle. I was going to try it but my local dealer was out of stock on new props and I didn't want to try it on the only one I had. I subsequently lost interest as the Honda works so well as is. I do believe that we could get better performance in waves with a more power oriented prop than comes as standard. Thanks Doug Kelch Gary M Hyde <gmhyde1@mac.com> wrote: 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
_______________________________________________ http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats
I doubt that prop pitch is very important on such a light boat. Those considerations are more for a heavy displacement yacht.
************************************** Get a sneak peek of the all- new AOL at http://discover.aol.com/memed/aolcom30tour _______________________________________________ http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats
_______________________________________________ http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats --------------------------------- Luggage? GPS? Comic books? Check out fitting gifts for grads at Yahoo! Search.
Thanks Skipper It seems that if we are figuring on screwing ourselves through the water (if you will pardon the expression) at 4 knots the propeller should be advancing so as not to "strip the thread" If it were turning a 500 rpm it would turn 500 x 60 = 30000 rev in one hour. Each rev would be 4/30000 nautical miles or 4/30000x6080x12=9.728in This would be the ideal prop pitch. If the prop spins at say 1000 rpm the pitch would be 9.728 x 500/1000=4.864in etc. I found a interesting site on prop design here is the link http://www.boatfix.com/how/props.html Thanks for the information Captain Jim Sadler Skipper sailing vessel Pelican -----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 Doug Kelch Sent: Thursday, August 30, 2007 6:29 AM To: For and about Montgomery Sailboats Subject: Re: M_Boats: M-15 Prop pitch The Honda 2 hp 4 cycle uses a plastic prop. There was an article in Messing about in boats about how to change the pitch by clamping the tip of the blade, using a heat gun at the base and twisting in the desired direction. The tip clamp can include a longer piece of wood to help set the desired angle. I was going to try it but my local dealer was out of stock on new props and I didn't want to try it on the only one I had. I subsequently lost interest as the Honda works so well as is. I do believe that we could get better performance in waves with a more power oriented prop than comes as standard. Thanks Doug Kelch Gary M Hyde <gmhyde1@mac.com> wrote: 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
_______________________________________________ http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats
I doubt that prop pitch is very important on such a light boat. Those considerations are more for a heavy displacement yacht.
************************************** Get a sneak peek of the all- new AOL at http://discover.aol.com/memed/aolcom30tour _______________________________________________ http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats
_______________________________________________ http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats --------------------------------- Luggage? GPS? Comic books? Check out fitting gifts for grads at Yahoo! Search. _______________________________________________ http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats
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
_______________________________________________ http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats
I doubt that prop pitch is very important on such a light boat. Those considerations are more for a heavy displacement yacht.
************************************** Get a sneak peek of the all- new AOL at http://discover.aol.com/memed/aolcom30tour _______________________________________________ http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats
_______________________________________________ http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats
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
_______________________________________________ http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats
I doubt that prop pitch is very important on such a light boat. Those considerations are more for a heavy displacement yacht.
************************************** Get a sneak peek of the all- new AOL at http://discover.aol.com/memed/aolcom30tour _______________________________________________ http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats
_______________________________________________ http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats _______________________________________________ http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats --------------------------------- Boardwalk for $500? In 2007? Ha! Play Monopoly Here and Now (it's updated for today's economy) at Yahoo! Games.
jim: yes the Honda 2HP motor will easily move the M15 at 4 knots. when i motor i throttle the motor to get this speed (as matched to the GPS) ... hey, its a sailboat and who is in a hurry. the throttle setting is someplace between 1/2 and 2/3 depending on wind and tide. at the above throttle setting i'll easily run an hour to an hour &15min. (honda says the motor will run 55min a full throttle.) using the above speed this mean i'm running about 4-5nm / tank. tank holds ~1/4 gallon so getting 15-20nm/gal. during the monty san juan cruise motor time was 12hr 50min out of 33hr 10min moving (20hr 20min was spent sailing). total distance was 102nm (remember that sailing required tacking and increased nm's traveled v. 'strait line' course when motoring). i departed on the cruise with ~3.5 gallons of fuel. returned with something between 1.5 and 1.75 gallons (based on the small 1.2 gal tank being full and some in the 2.3 gal tank); making a total fuel use of 2-ish gallons. and then there is this statement, "you experience may vary." ;-) dave scobie M15 #288 - not yet named Jim Sadler <jimsadler@jascopacific.com> wrote: .... Will the 2hp actually move an M-15 at 4 Knots? Captain Jim Sadler Skipper sailing vessel Pelican M-15 --------------------------------- Park yourself in front of a world of choices in alternative vehicles. Visit the Yahoo! Auto Green Center.
Yes, 28.0 nmpg, and yes, 4 knots. --Gary Hyde 2005 M17 sailboat #637 'Hydeaway 2' We can't change the wind, but we can trim our sails. On Aug 30, 2007, at 8:54 AM, Jim Sadler 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
_______________________________________________ http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats
I doubt that prop pitch is very important on such a light boat. Those considerations are more for a heavy displacement yacht.
************************************** Get a sneak peek of the all- new AOL at http://discover.aol.com/memed/aolcom30tour _______________________________________________ http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats
_______________________________________________ http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats
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participants (5)
-
Doug Kelch -
Gary M Hyde -
Jim Sadler -
Sandyal55＠aol.com -
W David Scobie