[Rhodes22-list] Hull speed under power

[Roger Pihlaja]

Slim,

The data from my copy of the USYRU PHRF Handicap manual says the C&C 24 is
rated at 220-230 sec/nm whereas your Rhodes 22 is rated at 258-312 sec/nm.
That means, in a PHRF handicap race, the C&C 24 would have to spot your
Rhodes 22  258 - 230 = 28 sec/nm to 312 - 220 = 92 sec/nm.  This difference
in PHRF handicaps implies the C&C 24 is a lot faster than our Rhodes 22's.
Unless the C&C 24 was being sailed poorly, you never had a chance.

Roger Pihlaja
S/C Dynamic Equilibrium

----- Original Message -----
From: "brad haslett" <flybrad at yahoo.com>
To: "The Rhodes 22 mail list" <rhodes22-list at rhodes22.org>
Sent: Monday, October 11, 2004 6:03 AM
Subject: Re: [Rhodes22-list] Hull speed under power


> Slim,
>
> Actually, your two-stroke is just as happy at full
> throttle, if not happier, than at 3/4 or 2/3 throttle.
> Noise level is another matter.
> Chances are the prop you have was sized by the
> manufacturer to allow the engine to achieve max RPM
> and no more.  The pitch "should" be stamped on the
> prop but if it isn't look for a part number and
> cross-reference it with a chart off the net.
>
> Now as to the C&C 24, just being two feet longer gives
> it some advantage already.  Also, most of the C&C
> hulls were optimized for racing. Hope you feel better.
>
> As we say in flying "Speed Is Life!"
>
> Brad Haslett
> "CoraShen"
>
>
> --- Steve Alm <salm at mn.rr.com> wrote:
>
> > I'm wondering if I have the right prop.  I have a
> > '97 Mercury 8.0 two stroke
> > that runs great and starts on the first or second
> > pull every time. (Don't
> > worry--I'm not going for the two stroke vs. four
> > stroke issue here.)  With
> > zero wind and at full throttle, I can just barely
> > make hull speed of 5.9 or
> > 6.0 knots.  In a light head wind, I can't even come
> > close to that.  But I
> > don't like to run the motor at full throttle for
> > long.  Typically, I run it
> > at about 2/3 or maybe 3/4, and I get about 4 or 4.5
> > kts. depending on the
> > wind.  It seems like I should have a little more
> > umph than that, so I wonder
> > about the prop.  I don't know what kind of prop I
> > have--there's no number or
> > anything on it.  How do you tell?
> >
> > Slim
> >
> > __________________________________________________
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> >
>
>
>
>
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