Motoring range for a 34' with 3GM35F - Page 2 - SailNet Community
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post #11 of 15 Old 07-15-2011 Thread Starter
Mondofromredondo
 
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Bob,

I WAS suprised by the number of "28 Gallons" as for some reason I have been thinking all along that my tank held 35. I may have found that number in an old add or yachtworld add of some sort. But it troubles me to learn that I only have 28 rather than 35.
Just checked Yachtworld and it seems that other PSC 34 owners in the 1988 era are under the same impresson. But I've always noticed that when I went to refill my tank that I was always suprised that it took less to fillerup than I had expected.

In the long run its nothing a few gerry cans can't remedy.

I did a rough calc and figure with 28 gallons I have about a 200 mile motoring range.
Or about 40 hrs to burn a tank.

Just spent 6.5 boat units on Charity Rose ('88 PSC 34') new Bristol finish on the exterior and Garmin 740S radar. Saw it all yesterday. Had to mount the Radome above the inner forestay which places it higher than similar mountings I've seen. All in all very pleased.
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post #12 of 15 Old 07-15-2011
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Originally Posted by mondofromredondo View Post
Hi all,

I'm always reminding myself to take note of the distances I've clocked while motoring and correlate it with fuel burn but I always forget as I'm too excited just to get out on the boat.

Has anyone calculated the range per tank or distance per gallon?

Obviously this would vary from boat / motor combo and conditions.

But I'm looking for a number that would give me a general idea based upon my PSC 34 and 3gm35f in calm conditions at around 2500 RPM. I have a 35 gallon tank with a 3 blade prop as well.

I've noticed that my fuel tank barely drops when I motor 20 miles to Catalina and 20 back. Very fuel miserly.

Thanks to all !!!!
Range= (Fuel Capacity less 10% for reserve)/(Burn Rate at 2500 RPM) x (average speed at 2500 RPM), I'm guessing about 265 miles with a reserve.

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post #13 of 15 Old 07-16-2011
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Quote:
Originally Posted by mondofromredondo View Post
I WAS suprised by the number of "28 Gallons" as for some reason I have been thinking all along that my tank held 35.
Note the 28 gallons is for a scheel keel. I wonder of the scheel keel changes the size of the fuel tank.



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post #14 of 15 Old 07-16-2011 Thread Starter
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Skeel Keel

Rain Dog,

I wondered the same thing with regard to the skeel Keel vs fuel tank capacity.

But if I was the boat designer I'd try to make the entire keel to hull attach geometry the same from one keel type to the next to aid with the manufacturing process.

But I'm not the boat designer and couldn't have done 1/10 as good a job as he did.

Keith
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post #15 of 15 Old 07-18-2011
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Sheel (shoal) keel tank size

The tank size on the 31 is 23 gallons regular and 17 gallons for my Sheel. I have seen some PSC literature saying that the 34 tank sizes are 37 full keel and 28 gal Sheel.

John
PSC 31 #28
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