[C320-list] GFO and Autoprop first report

[Richard A. Walker]

Dave 

Do you have an Autoprop?  I have multiple runs in slack water using a
calibrated knot meter cross checked with the GPS and get about 7.1 kts at
+/- 2700 RPM.  They key it the self pitching Autoprop.

We have a group at Coronado YUC that are really heavy into the predicted log
racing business.  From them I have learned to calibrate my B&G knot meter on
a measured mile here in San Diego.  In their "races" the winners can do a
"race" with less than one percent error.

Cheers,
 
Dick Walker
C-320 (687) WindWalker II
740 Olive Ave.
Coronado, CA 92118-2136
619.435.8986

-----Original Message-----
From: C320-List-bounces at catalina320.com
[mailto:C320-List-bounces at catalina320.com] On Behalf Of Dave Anderer
Sent: Thursday, May 11, 2006 12:21 PM
To: C320-List
Subject: Re: [C320-list] GFO and Autoprop first report

I've got very little time on the boat, and none on other 320s, but:

- The tach was checked during the survey last fall; reported to be spot-on.
- The knotmeter paddlewheel had to be replaced.  I did so, and took the 
time to calibrate it accurately by doing multiple runs (with and against 
the current) against both know landmarks and the GPS.
- The bottom is clean through rough.

I see 6 knots at 2700-2800 RPM.  I frankly don't understand some of 
these high speeds folks are quoting.

Of course, it was the same thing with the previous boat.  I went through 
the same process, and other folks always seem to report higher speeds.  
Reporting bias?  Or maybe I just buy slow boats.

Dave
Meanderer II
#642

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