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Author Topic:   NANTUCKET 190 Fuel Economy
darren posted 07-29-2004 10:26 PM ET (US)   Profile for darren   Send Email to darren  
[What is the fuel economy of a NANTUCKET 190 with 115-HP two-stroke engine when operating at 3500-RPM?] I might go to twin wercks off Ocean City, MD. I think [it is] about 25 miles. Any [advice]?
Yiddil posted 07-30-2004 12:47 AM ET (US)     Profile for Yiddil  Send Email to Yiddil     
Hmmm...even at 60 gal. @ 2miles per gal. were talking 120 miles with a full tank...but Im thinking you can do better, like 3 miles per gal...180...check around here...i think someone said 4 per gal...for 240 range...But Ive been out that way and you should take all nessessary safety geer you might need...dont wanna get stuck out there ..........Best of luck......
Jarhead posted 07-30-2004 09:08 AM ET (US)     Profile for Jarhead  Send Email to Jarhead     
Please remember the 1/3 rule.

1/3 of your fuel to get there.

1/3 to get back.

And the very important, 1/3 reserve.

For example; You plan on a trip at 3500 RPM, you're on the return trip, the next thing you know you see a storm coming up or someone gets hurt/sick, you have to get going fast! The last thing you want to worry about is if you have enough fuel to make it.

Sorry if I'm preaching to the choir darren. :)

lizabethie posted 07-30-2004 10:25 AM ET (US)     Profile for lizabethie  Send Email to lizabethie     
We've had our Nantucket for a little over a month and have run it about 180 miles (according to the chart plotter). We have the 115 Merc that comes standard. We are stealing time after work, so usually only get down to 3/4 of a tank, and have filled it with 35 gallons total. We followed the 10 hour break in period, so those were at lower RPMs, but now I cruise her around 3500-4000. I would say between 3-5 miles per gallon average.
Yiddil posted 07-30-2004 01:10 PM ET (US)     Profile for Yiddil  Send Email to Yiddil     
That sounds about right for me too in my Nantucket:))
jimh posted 07-31-2004 02:55 PM ET (US)     Profile for jimh  Send Email to jimh     
Measurements of fuel economy for current production boats are available on the Boston Whaler website. My advice is:

--visit the website and find the fuel economy measurements;
--extract the data for the 3500-RPM speed;
--estimate you range as follows: multiply your fuel tank capacity by 0.9 and divide the product by the MPG figure you located above. This will be your estimated range at 3500-RPM.
--compare the distance you anticipate necessary to reach the offshore area with the estimated range above. It may be prudent to add considerable safety factor. Wind and sea conditions may not allow you to operate at 3500-RPM. This may affect your fuel economy, making fuel consumption much higher.

jimh posted 07-31-2004 02:58 PM ET (US)     Profile for jimh  Send Email to jimh     
Measurements of fuel economy for current production boats are available on the Boston Whaler website. My advice is:

--visit the website and find the fuel economy measurements;
--extract the data for the 3500-RPM speed;
--estimate you range as follows: multiply your fuel tank capacity by 0.9 and divide the product by the MPG figure you located above. This will be your estimated range at 3500-RPM.
--compare the distance you anticipate necessary to reach the offshore area with the estimated range above. It may be prudent to add considerable safety factor. Wind and sea conditions may not allow you to operate at 3500-RPM. This may affect your fuel economy, making fuel consumption much higher.

kamie posted 07-31-2004 09:42 PM ET (US)     Profile for kamie  Send Email to kamie     
Jim,
Fuel Economy figures are not available for the 115hp on the Nantucket. The 2 stroke is no longer even an option an the fourstroke lists speed numbers but not fuel consumption.
jimh posted 08-01-2004 11:26 AM ET (US)     Profile for jimh  Send Email to jimh     
Too bad the factory has not published their measurements for the 115-HP engine. I just noticed that, myself.

Perhaps someone has accurate information on this. Or, look for other reports of this engine on similarly sized boats. I would be extreme wary of the very optimistic figures like 5-MPG that have been tossed around for this engine.

darren posted 08-01-2004 04:33 PM ET (US)     Profile for darren  Send Email to darren     
Well i went out there at about 3000rpm in a south west wind I think its like 3 mpg.she did great nice dry ride.went from oc inlet to twin wrecks caught 3 big blue fish.then went to 20 fathom fingers troll a little.then troll to the jackspot.I was inpresed with this boat.
darren posted 08-02-2004 09:04 PM ET (US)     Profile for darren  Send Email to darren     
thanks everybody for your help Darren

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