Gene Kearns wrote:
On Wed, 08 Aug 2007 16:36:51 -0700, gilly penned the following well
considered thoughts to the readers of rec.boats:

On 8 Aug, 00:48, "JimH" ask wrote:
"gilly" wrote in message

ups.com...



This weekend,i was out on my boat( Bayliner 2052,yr2000,4.3 merc efi )
which i know can reach 50mph...snip
Just curious..........how do you know that?
My first trip out on her showed 50-51mph on the gauge when i opened
the throttle.


Simon

If that is the case, Bayliner will probably buy the boat back! That's
about 10 MPH higher than they claim........ (except with the V-8)

Gene,
It probably is reading 50 mph on the speedmeter, but it does not mean he
is actually going 50 mph, the pressure tubes are extremely inaccurate.

On 9 Aug, 15:32, Gene Kearns
wrote:
On Thu, 09 Aug 2007 10:09:48 -0400, Reginald P. Smithers III penned
the following well considered thoughts to the readers of rec.boats:



Gene Kearns wrote:
On Wed, 08 Aug 2007 16:36:51 -0700, gilly penned the following well
considered thoughts to the readers of rec.boats:

On 8 Aug, 00:48, "JimH" ask wrote:
"gilly" wrote in message

egroups.com...

This weekend,i was out on my boat( Bayliner 2052,yr2000,4.3 merc efi )
which i know can reach 50mph...snip
Just curious..........how do you know that?
My first trip out on her showed 50-51mph on the gauge when i opened
the throttle.

Simon

If that is the case, Bayliner will probably buy the boat back! That's
about 10 MPH higher than they claim........ (except with the V-8)

Gene,
It probably is reading 50 mph on the speedmeter, but it does not mean he
is actually going 50 mph, the pressure tubes are extremely inaccurate.

Yeah.... you are correct. I implied that inaccuracy in my 1st post.

--

Grady-White Gulfstream, out of Oak Island, NC.

Homepagehttp://pamandgene.idleplay.net/

Rec.boats at Lee Yeaton's Bayguidehttp://www.thebayguide.com/rec.boats

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So guys,surely the point is..... i'm only telling you that i saw 50mph
on my first trip(i'm not saying i was doing 50mph) and now its only
showing 40mph with a stuggle.So, something is wrong to be losing
10mph.This is what i'm trying to find out.
Now i've got myself a brand new prop with diffuser ring which is
missing on mine and a new trim gauge on order.I'm hoping this will
sort things out or at least go some way.

Simon

On Fri, 10 Aug 2007 08:36:11 -0400, Gene Kearns
wrote:

Try this calculator. It might give you a broader picture of what you
are trying to accomplish.
http://continuouswave.com/cgi-bin/propcalc.pl/

How much slip should one use in that calculation.