Thats the problem. Last year I topped off the tank
before putting it on the hard for the winter. Who
knows the speed and RPM’s done over the summer. Where
we sail, if there’s wind on the bay, we motor out for
5 minutes, sail for 6 hours and then motor back in for
5 minutes. I think I used 15 gallons the entire
summer.
Beckie had neck surgery so we didn’t go anywhere.
Not sure about this summer.
alan
— Robert Fine <> wrote:
Hi Alan,
I came up with the numbers (which are very close to
yours, by the way, at
least before you re-pitched the prop) by filling the
tank, running for 10
hours to get somewhere in no wind and then filling
the tank again. Believe
me, that’s not what’s going to happen this year as
last year when I bought
the boat my goal was to empty the three year old
fuel as quickly as
possible.That’s not the case this year…
Bob
On Thu, May 8, 2008 at 4:37 AM, alan P
<> wrote:Actualy I am rather embarrassed to say “I am not
sure”.
The four or five trips I have made up to the 1000
Islands (about 80 – 90 miles) with this boat, I
figured I got about 1 to 1&1/4 Gallons/Hr – speed
around 6.5 to 7 knots RPM’s 2200.
Since Ive repitched the prob last summer, I havenot
taken any long trips – just the 3 mile hike to the
outlet to sail.
I havent kept track of the usage.
At 2500 RPM’s the ass end of the boat really gets
buried and it takes two hands to steer but the 7.5
knots get’s me out the lake sooner. At 5$ a gallon
I’ll be more careful in the future.
I wished there was a better way to guess fuel
consumption. Motoring a couple of miles and then
heading back to the fuel dock on Sodus Bay isPITA.
Oh, and our fuel gauges work so well!
Maybe I’ll make a point to do a better job thissummer
since I won’t be able to sail for awhile – Getting
my
arm fixed.
How did you come up with those numbers?alan
— Robert Fine <> wrote:
Really? I cruise at 1900-2000 rpm at 6 to 6.5
knots. I can get the engine
up to 2400 rpm, but by that point it’s tryingto
climb out of the water.
At 1900 rpm it’s burning about 3/4 gallon perhour.
At 2200, it’s burning
nearly 2 gal/hr. Since the gain in speed of atmost
a knot isn’t worth it,
I just cruise right along.What are your experiences with speed/rpm/fuel
consumption?Bob
On Thu, May 8, 2008 at 3:17 AM, alan P
<> wrote:I repitched mine from a 13 to a 12. Mainly
because
I
thought I should have more engine RPM’s before
the
engine started to bellow black smoke. I have a
W58
and
now can get it past 2800 rpms. Not that I ever
run
it
that high, mostly cruise at 22 to 2400.
alan
— Syringa <> wrote:Patrick
Hope you had a good trip back from
Bellingham!
I
have been looking into the prop pull on
Syringa
as
you know. (This is when the vessel is under
steady
steaming in forward at 1800 rpm or above)
(not
backing or docking) I don’t believe the
shaft
is
off set (if it is it’s not much) and should
not
account for that much pull. The prop may
be
over
pitched. I will let you know if or when I
come
up
with the answer.
I would like to hear from anyone who has
changed
propellers or reduced the pitch.
Thanks
Don
Syringa
m2f
Read this topic online here:
https://www.pearson424.org/bb2forum/viewtopic.php?p=831#831
m2f
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