[C38] Tom is right

[Max Soto]

Don, don't you have the original signet plug?? That's what I have as
permanent, and when using the boat I just install the paddle wheel. After
the trip, the plug goes back....

Regards,

Max

2011/1/14 Don Strong <drstrong at ucdavis.edu>

>  I apologize for the facetious post. Of course the knot meter is very
> useful for current calculations. It pegs while we come in under the Golden
> Gate Bridge at max ebb; the GPS says 1.567 knots. This is the main reason,
> by the way, that the paddle is inconstant on any given day. The big problem
> with the paddle is its need for constant cleaning; the bugs love to grow
> there. One could teach an invertebrate zoology course with the species that
> find a home on the paddle. Don't you just love the green column of water
> that shoots up into the boat when you extract the device from its mounting!
> This still gives me an adrenaline lift, after many years of the experience.
> I use a wooden bung to plug the hole while cleaning off the paddle wheel.
> Don
>
> On 1/14/11 6:56 AM, Tom T. wrote:
>
>
> I like using both the knotmeter and the GPS.
>
> Coming in and out of Tampa Bay can be a real thrill when you need to
> maintain a schedule, like getting crew back to the airport on time.
>
> The GPS is very accurate but doesn't tell squat about boat speed through
> the water.  I've seen 5kts on my knotmeter and zero on the GPS when we were
> sailing back beating against an outgoing tide.  I like to know both speeds,
> VMG as well as water speed when I'm trying to calculate my progress and my
> own tuning performance.
>
> Tom T.
>
>
> ----- Original Message -----
> *From:* Don Strong <drstrong at ucdavis.edu>
> *To: *listserve at catalina38.org
> *Sent:* 1/14/2011 9:09:12 AM
> *Subject:* Re: [C38] speed. GPS is lots better than wheel
>
>  We did tests of our Signet paddle wheel versus several GPS over measured
> courses with stop watches etc. The wheel was inconsistent, faster and slower
> than the GPS. The GPSes matched each other as perfectly as we could record
> and exceeded the precision we could muster with stop watches. No contest. We
> quit after a few tries and had a beer.  My pal was a VP at Magellan, and
> predicted the outcome. He still teases me about it.
> Don
>
> On 1/13/11 7:46 PM, Steve Smolinske wrote:
>
> Does anyone have any knowledge on the location of the knot meter on the
> centerline?  Peregrine is in the yard having mushroom mounts removed and
> replaced with flush mounts.  I instructed in writing to the yard along with
> a photo to place the knot meter on centerline 33% of the distance from the
> keel to the waterline entry point.  They have placed it 1' in front of the
> keel and stated that is the perfect location and any further forward it will
> be subject to disturbance from the bow wave.  (yes they went ahead without
> contacting me first)   We are going to talk about it tomorrow morning and Im
> hoping someone has some definitive information I can use. Grrrr  Thanks
>
> Steve
> #312 Peregrine
> Seattle
>
>
>
> _______________________________________________
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>
>
> --
> Donald R. Strong
> Professor
> Dept. of Evolution and Ecology
> University of California, Davis 95616
>
>
> _______________________________________________
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>
>
> --
> Donald R. Strong
> Professor
> Dept. of Evolution and Ecology
> University of California, Davis 95616
>
>
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>
>


-- 
Max Soto
C38 #198 ESTANCIA
Puntarenas, Costa Rica
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