[C320-list] [SPAM] Re: Boat Speed

[pjaarch]

I sanded the bottom and cleaned the prop.  We are cruising now so the boat 
is loaded down but so are the others I am with.  I did notice that during 
the sea trial, the boat was run at near 4000 rpms for just a minute.  If the 
engine is rated at 3400 rpms, should the engine run that much faster?  It 
could be a tach problem, but the engine sounds right at 2700-2800.  Over 
that, it sounds like its really working hard.  The boats I am with are all 
running about 2400 to stay with me which is well under there cruising speed.

Paul Adison
C320 #722
"Rough Draft"
riginal Message ----- 
From: "Rick Evans" <ericstillwellevans at gmail.com>
To: <C320-List at Catalina320.com>
Sent: Monday, July 06, 2009 8:08 PM
Subject: [SPAM] Re: [C320-list] Boat Speed


> Paul
>
> I have number 724 and last year with a crappy bottom she would still get 
> 5.5 sometime 6knts depending on wind, current etc.
>
> This year I scraped all old paint put on VC offshore and wet sanded with 
> 400grit and took a wire brush to the prop to insure a smooth surface. The 
> other day I was out in a slack tide and at around 2700 she was doing 
> 7knts. This is through the water not over ground on gps. I only have a 2 
> blade prop.
>
> In any event dirty bottoms and gunked up props could easily be the cause 
> of slow speeds. When I first bought the boat the surveyor took it for a 20 
> mile jaunt to pull her out of the water he said she wouldn't do better 
> than 5knts. When they pulled her the bottom was a mess and the prop looked 
> like a barnacle factory.
>
> If you just bought her was she surveyed? Was the bottom and prop clean?
>
> Rick 724
> ------Original Message------
> From: pjaarch
> Sender: c320-list-bounces at lists.catalina320.com
> To: C320-List at Catalina320.com
> ReplyTo: C320-List at Catalina320.com
> Subject: [C320-list] Boat Speed
> Sent: Jul 6, 2009 5:39 PM
>
>
> I just purchased my 320 several weeks ago and am concerned about the boat 
> speed while under power.  I have a 3GM30F and cruise at about 5.4 knots at 
> 2700RPMs.  It seems slow to me.  I am currently cruising with other boats, 
> a (hunter 28, beneteau 331, and an Irwin 38.)  They all cruise easily 6 
> knots at 2700 RPMs and I can't keep up.  I have a 3 blade prop.  Could I 
> be under proped?  What is the cruising RPMs for the boat?  I have no ID 
> plate on the engine block.  I assume it is rated for 3400.
>
> Paul Adison
> C320 #722
> "Rough Draft"
>
>
> Sent via BlackBerry from T-Mobile