On average you will get between 2.5 and 3.0 miles per gallon. This assumes
you are running on plane and are running between 3000 and 4000 rpms. The
lower the rpms the better the mileage.

Everyone wants to quote gallons per hour at a certain rpm. How many hours
do you run at the same rpm? Miles per gallon means so much more as you
should know how far you have gone using either a chart or a gps. This will
tell you exactly how far you can still go on a given amount of fuel.

Of course that is my opinion.
--
Tony
my boats and cars at http://t.thomas.home.mchsi.com


"John H" wrote in message
...
Does anyone have something that will tell me what the fuel consumption
expectations are for a Pro-line 211 walkaround with a 5.7L carbureted
engine?

It's listed in the Powerboat Guide, which I'm too cheap to buy just to get
this
question answered.

I'm also too cheap to put a fuel meter on it.

Actually, I'm so cheap I may not burn the electricity to turn this
computer on
to get an answer....but I'll love you if you try.

Thanks!
--
John H

"All decisions are the result of binary thinking."

On Sat, 09 Apr 2005 22:37:36 GMT, "tony thomas" wrote:

On average you will get between 2.5 and 3.0 miles per gallon. This assumes
you are running on plane and are running between 3000 and 4000 rpms. The
lower the rpms the better the mileage.

Everyone wants to quote gallons per hour at a certain rpm. How many hours
do you run at the same rpm? Miles per gallon means so much more as you
should know how far you have gone using either a chart or a gps. This will
tell you exactly how far you can still go on a given amount of fuel.

Of course that is my opinion.

Actually, Tony, gph is better in my case. When fishing, I am either trolling or
going somewhere on plane and anchoring for a long time (or just drifting). If
trolling, I might be on plane for a half hour and then troll at 1-3 mph for four
or five hours (unless I'm lucky and limit out early!). If bottom fishing, I may
be on plane for an hour getting to the site, and then anchoring for four or five
hours. So I really need to know my planing consumption and my trolling
consumption. That way, if I'm splitting the gas costs with a couple other folks
it'll be fair all around.
--
John H

"All decisions are the result of binary thinking."

Agreed for that situation. But would it not be more fair to start out full
of fuel and then top off when you get back. That way you know exactly how
much you burned.

--
Tony
my boats and cars at http://t.thomas.home.mchsi.com
"John H" wrote in message
...
On Sat, 09 Apr 2005 22:37:36 GMT, "tony thomas"
wrote:

On average you will get between 2.5 and 3.0 miles per gallon. This
assumes
you are running on plane and are running between 3000 and 4000 rpms. The
lower the rpms the better the mileage.

Everyone wants to quote gallons per hour at a certain rpm. How many hours
do you run at the same rpm? Miles per gallon means so much more as you
should know how far you have gone using either a chart or a gps. This
will
tell you exactly how far you can still go on a given amount of fuel.

Of course that is my opinion.

Actually, Tony, gph is better in my case. When fishing, I am either
trolling or
going somewhere on plane and anchoring for a long time (or just drifting).
If
trolling, I might be on plane for a half hour and then troll at 1-3 mph
for four
or five hours (unless I'm lucky and limit out early!). If bottom fishing,
I may
be on plane for an hour getting to the site, and then anchoring for four
or five
hours. So I really need to know my planing consumption and my trolling
consumption. That way, if I'm splitting the gas costs with a couple other
folks
it'll be fair all around.
--
John H

"All decisions are the result of binary thinking."

On Sun, 10 Apr 2005 02:29:07 GMT, "tony thomas" wrote:

Agreed for that situation. But would it not be more fair to start out full
of fuel and then top off when you get back. That way you know exactly how
much you burned.

That would be more accurate, if I wanted to take the time to do so every time I
go out. But, I don't.
--
John H

"All decisions are the result of binary thinking."

If your boat holds 120 gallons of fuel and you plan on spending a few
hours cruising or making a quick run to the reef and back, it doesn't
make sense to fill your tank every time you go out. That full 700# will
cost you more to carry around. I try to start with about twice as much
gas as I think I will use. If I'm trailering, I'll fill it up since the
gas on shore is so much cheaper than the fuel docks.

Dan


John H wrote:
On Sun, 10 Apr 2005 02:29:07 GMT, "tony thomas" wrote:


Agreed for that situation. But would it not be more fair to start out full
of fuel and then top off when you get back. That way you know exactly how
much you burned.


That would be more accurate, if I wanted to take the time to do so every time I
go out. But, I don't.

I second your opinion! Mpg is much more important than gph.
Taking the chart one step further--adding the conversion for mpg we have:

RPM MPH Knots GPH MPG
650 3.7 3.2 0.9 4.1
1000 5.8 5.0 1.2 4.8
1500 8.1 7.0 3.4 2.3
2000 15.6 13.6 5.1 3.1
2500 24.4 21.2 6.0 4.1
3000 31.7 27.6 8.2 3.9
3500 39.6 34.4 11.8 3.4
4000 45.3 39.4 13.5 3.4
4500 49.9 43.3 17.2 2.9
4750 54.1 47.0 22.6 2.4


I wish I got such great "economy"! I average only about 2mpg with my 200hp
merc.
I usually run 3/4 throttle (35-40mph) for 9miles to the pass then troll or
run as fast as I
can safely and comfortably go to a bottom fishing spot. My boat has twin
18gal and a
third 17gal tank and consistantly, with a mix of trolling and crusing gets
between 1.9 to 2.1 mpg.
I keep a log with fishing, weather info and how much gas I put in. Maybe to
determine
the overall running time on the engine an hour meter is good but I could
care less about
how many gallons it takes me to move for one hour. Once I've commited to go
fishing,
I just want to be sure I have plenty of gas to get back! In the example
it's obvious that at 1500 rpm the boat's trying to get on plane and at
2500rpm it's on plane and
that WFO is inefficient (and not too good on the engine life either).
Notice that, once it's on plane
at 24.4mph it's as efficient as creeping along at 3.7mph. But within the
parameters of 3.7mph
to 45.3 mph (avoiding the 1500 rpm), there's not much difference. And, in
the example,
is one really going to run 5.8 mph for 30 miles just for economy? If I run
any distance at 3.7 or 5.8
mph it's because I trolling--not trying to save gas. If I really wanted to
save gas
I guess I'd get a sailboat! Let's go fish!
LD

"tony thomas" wrote in message
news:QOY5e.1364$xL4.780@attbi_s72...
On average you will get between 2.5 and 3.0 miles per gallon. This
assumes
you are running on plane and are running between 3000 and 4000 rpms. The
lower the rpms the better the mileage.

Everyone wants to quote gallons per hour at a certain rpm. How many hours
do you run at the same rpm? Miles per gallon means so much more as you
should know how far you have gone using either a chart or a gps. This
will
tell you exactly how far you can still go on a given amount of fuel.

Of course that is my opinion.
--
Tony
my boats and cars at http://t.thomas.home.mchsi.com


"John H" wrote in message
...
Does anyone have something that will tell me what the fuel consumption
expectations are for a Pro-line 211 walkaround with a 5.7L carbureted
engine?

It's listed in the Powerboat Guide, which I'm too cheap to buy just to
get
this
question answered.

I'm also too cheap to put a fuel meter on it.

Actually, I'm so cheap I may not burn the electricity to turn this
computer on
to get an answer....but I'll love you if you try.

Thanks!
--
John H

"All decisions are the result of binary thinking."