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Rich--
With a P-15 in 20 knot winds with attendant chop if you where to race three
boats, one with a Honda 2, One with a Tohatsu 3.5 and one with a Honda 5 from
island to island, I'm afraid it would be a dead heat. All three would push
your P-15 at hull speed. If you where to SAIL in the 20 knot winds with the
same competition, the boats with the smaller engines would probably finish
before the boat with the 5 HP due to the extra weight on the transom. That is
not to mention that you would be doing a lot more bouncing due to the weight
being on the stern.
As far as going to another island that is 30 miles away, that is doable with
any of the motors. You are looking at about a 7 hour motor, so if you where
to leave early in the morning, you'd be at the other island by afternoon.
Remember, too, that motoring seven hours in a sailboat is not like driving
seven hours. There's no traffic lights or reasons to have to stare at the
road. You can eat, shmoose, talk, contemplate, talk with the fishys, tan your
hide--whatever you like. I would advise that for a trek that far that you try
to do it with another boat in attendance--sort of like the buddy system, and
make certain that the weather is reasonable and the tides and currents are
with you.
I will say, and this from experience, that a seven hour journey with a noisy
motor can be a job, while one with a quite and smooth power plant can be a
pleasure. You'll get there with any of them though.
I can't believe you live in the islands and waited past your first birthday to
get your sailboat!
Geoff
P-15 Lollipop
No. Lake Tahoe, NV
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From: "Rich Duffy" <duffy@maui.com>
To: wwpotter@tscnet.com
Date: Thu, 5 Nov 1998 13:00:47 -1000
Subject: Hawaiian trade wind P14/15 HP race
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- - - - - - - - - - - - - - - - - - - - - - - - - - -
West Wight Potter Website at URL
http://www.lesbois.com/wwpotter/
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I see that one of my first tasks as a sailor will be to buy a motor.
And I'll buy it for a boat I've never sailed (motored?) in, for wind and
sea conditions that I've never really paid much attention to.
I have spent a little bit of time plowing through the archives and I
came away with the sense that a 2 HP engine would be plenty for a
P-14/15 and that, if I understood anything about marine architecture
and hull speeds, that I'd realize that any addional horsepower would
simply be an exercise in turning gasoline into noise, smoke and
vibration.
I am drawn to this argument because I don't care for noise, smoke,
or vibration, and I certainly don't want to spend extra money for the
pleasure of their company. Moreover, I feel a deep and powerful
draw to adopt the elegant (usually minimalist) solution to any design
problem. (Duhh, maybe that's why I bought the Potter, eh?)
On the other hand ....
T<color><param>0100,0100,0100</param>he Pacific is broad</color>...The
channels to the other nearby islands,
Molokai, Lanai, Kahoolawe, Molokini are just 4 to 9 miles, but the
channels onto Hawaii and Oahu are almost 30 miles each. It's hard
to imagine that I won't soon sail to the nearer islands.
<color><param>0100,0100,0100</param>The trade winds are strong</color>. A
surface wnd map of the island shows
mean trade wind flow at<color><param>0100,0100,0100</param><smaller> 16 to 18
kn</color><bigger>ots on the windward side of the
island, 20 to 22 knots along the open channels to Molokai and
Hawaii. On the leeward side there's a great amount of local variation
in the wind because the two mountains that comprise Maui create a
venturi effect. It's under 10 knots on the leeward side near the
Lahaina boatramp, over 18 knots at the Maalea boatramp, and 14
knots at the Kihei boatramp.
More than a couple people have suggested to me that, sailor or no
sailor, there will be plenty of times that I will want to just lower the sail
and "steam" straight home against the trades at the end of the day.
Since'd I've never sailed (except as ballast), I don't know how to
evaluate this statement. But if it's true, I don't want to find myself
steaming to Maalea against a 20 knot headwind, with the attendant
chop, wishing I had a bigger motor.
I would really welcome comments from folks who've sailed P14/15s
with various motors so I can get a reasonable sense of what
difference a couple of horsepower make. I understand (from
reading the archives) that there are other issues here -- 2-stroke vs.
4-stroke, the advantages of having a "neutral" gear, transom weight,
etc. --- but I am trying to focus on the raw HP issue.
I'd particularly like to hear if anyone would venture a quantified
opinion about the outcome of a race into a 20-knot headwind among
four differently powered P14/15s. One's got 2 HP, one's got 2.5 HP,
one's got 3.5 HP, and one's got 5 HP.
Okay. The answer is that the 5 HP boat wins in exactly 60 minute.
But what are the finishing times for the 3.5 HP boat, the 2.5 HP
boat? the 2 HP boat?
<nofill>
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