[C38] Tom is right
Don Strong
drstrong at ucdavis.edu
Fri Jan 14 11:19:45 EST 2011
Yes. I'm far too lazy to remove the paddle wheel after each sail.
Anyway, my wife doesn't like to be around when the water shoots into the
boat; she usually sails with me.
Don
On 1/14/11 7:51 AM, Max Soto wrote:
> 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 <mailto: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 <mailto:drstrong at ucdavis.edu>
>> *To: *listserve at catalina38.org <mailto: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
>>>
>>>
>>> _______________________________________________
>>> Listserve mailing list
>>> Listserve at catalina38.org <mailto:Listserve at catalina38.org>
>>> http://catalina38.org/mailman/listinfo/listserve_catalina38.org
>>
>> --
>> Donald R. Strong
>> Professor
>> Dept. of Evolution and Ecology
>> University of California, Davis 95616
>>
>>
>> _______________________________________________
>> Listserve mailing list
>> Listserve at catalina38.org <mailto:Listserve at catalina38.org>
>> http://catalina38.org/mailman/listinfo/listserve_catalina38.org
>
> --
> Donald R. Strong
> Professor
> Dept. of Evolution and Ecology
> University of California, Davis 95616
>
>
> _______________________________________________
> Listserve mailing list
> Listserve at catalina38.org <mailto:Listserve at catalina38.org>
> http://catalina38.org/mailman/listinfo/listserve_catalina38.org
>
>
>
>
> --
> Max Soto
> C38 #198 ESTANCIA
> Puntarenas, Costa Rica
>
>
> _______________________________________________
> Listserve mailing list
> Listserve at catalina38.org
> http://catalina38.org/mailman/listinfo/listserve_catalina38.org
--
Donald R. Strong
Professor
Dept. of Evolution and Ecology
University of California, Davis 95616
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://catalina38.org/pipermail/listserve_catalina38.org/attachments/20110114/814fb0cb/attachment-0001.htm>
More information about the Listserve
mailing list