[Rhodes22-list] How do I order spare parts from General Boat

[Roger Pihlaja]

John,

GBI tends to be fairly slow about responding to e-mail.  It's better to call
during normal business hours:

252-482-4372

Roger Pihlaja
S/V Dynamic Equilibrium

----- Original Message -----
From: "John Crickenberger" <jrcrick at access4less.net>
To: "The Rhodes 22 mail list" <rhodes22-list at rhodes22.org>
Sent: Monday, May 24, 2004 6:37 PM
Subject: [Rhodes22-list] How do I order spare parts from General Boat


> I has seen several message from people that had ordered parts from General
> Boat.  I have sent sever messages using  the email address at their web
site
> but have not gotten an answer.  What is the secret?
>
> ----- Original Message -----
> From: "Roger Pihlaja" <cen09402 at centurytel.net>
> To: "The Rhodes 22 mail list" <rhodes22-list at rhodes22.org>
> Sent: Tuesday, May 18, 2004 6:02 PM
> Subject: Re: [Rhodes22-list] Toys for Rhodes
>
>
> > Jeff,
> >
> > You are asking questions about a very complex subject.  I will try to
give
> > simple & short answers.  The type of sensors you are refering to are
> called
> > "pitot tubes" & there are versions intended for marine use.  Pitot tubes
> > operate by measuring the differential pressure between an orifice which
is
> > pointing into the flow stream and another orifice which is at the same
> > vertical height and exposed to the same fluid.  The velocity as measured
> by
> > this type of sensor is proportional to the square root of the
differential
> > pressure.  As such, pitot tube sensors are very inaccurate at the low
> > velocities usually encounted on sailboats.  These types of speed sensors
> are
> > very common on planing speedboats and of course on aircraft because of
the
> > greater velocities.  The only common sensor, (Meaning sufficiently
> > inexpensive for most of us to afford to buy!)  which is sufficiently
> > accurate at the low velocities encountered on sailboats, is the
> paddlewheel
> > turbine.  The paddlewheel turbine type sensor needs to be installed near
> the
> > front of the boat, far enough back from the bow to not be affected by
the
> > bow surging up and down, not so far back that the laminar flow has
> separated
> > into turbulence, and sufficiently deep that the transducer is always
> > submerged on either tack.  The prefered location on a Rhodes 22 is on
the
> > port side just in front of the shoal draft keel.
> >
> > The depth transducer has two possible locations on a Rhodes 22.  One is
on
> > the starboard side, approximately amidships as close as possible to the
> > shoal draft keel.  This places the transducer basically in front of the
> ice
> > box underneath the cabin sole.  Usually, a screw-in inspection plate is
> > installed in the cabin sole above the transducer to facilitate
> installation
> > and maintenence.  The other location is in the lazarette compartment as
> far
> > forward as possible and several inches to starboard of the centerline
> > cockpit drain.  However, in the lazarette compartment, the backside of
the
> > transducer and the cable must be protected against impact and chafing
from
> > all the heavy gear normally carried back there.
> >
> > If you want any more details than that, I suggest you talk to Stan at
GBI.
> >
> > Roger Pihlaja
> > S/V Dynamic Equilibrium
> >
> > ----- Original Message -----
> > From: <JSusanj at aol.com>
> > To: "The Rhodes 22 mail list" <rhodes22-list at rhodes22.org>
> > Sent: Tuesday, May 18, 2004 11:57 AM
> > Subject: Re: [Rhodes22-list] Toys for Rhodes
> >
> >
> > > How much does the hull shape affect the measurments?  I know that
flight
> > test aircraft put sensors out on a boom to get readings in air that is
not
> > disturbed by flowing around the fusilage.  Since it would be difficult
to
> > stick something out front, it would seem better to trail something
behind
> > rather than attaching it to or through the hull.
> > >
> > >
> > > Jeff S.
> > >
> > >
> > > In a message dated 5/17/2004 9:07:07 PM Eastern Daylight Time,
> > cen09402 at centurytel.net writes:
> > >
> > > >
> > > > Jeff,
> > > >
> > > > There are transom-mounted transducers for the knotmeter/log/water
> > > > temperature and also some installations of the depth sounder
> transducer
> > > > wherein the sensor is bonded to the inside of the hull with epoxy.
> > Without
> > > > going into the technicalities of these installations, neither type
> works
> > > > particularly well.  To the best of my knowledge on the subject, both
> > types
> > > > of transducers will give the best accuracy & sensitivity (greatest
> > measured
> > > > depth) if installed in properly located and oriented thru-hulls.  A
> > > > below-the-waterline thru hull is no big deal.
> > > >
> > > > Roger Pihlaja
> > > > S/V Dynamic Equilibrium
> > > >
> > > __________________________________________________
> > > Use Rhodes22-list at rhodes22.org, Help? www.rhodes22.org/list
> > >
> > >
> >
> >
> > __________________________________________________
> > Use Rhodes22-list at rhodes22.org, Help? www.rhodes22.org/list
>
> __________________________________________________
> Use Rhodes22-list at rhodes22.org, Help? www.rhodes22.org/list
>