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Subject: Re: Taffrail log and an alternative
From: Brian Whatcott (betwys@XXX.XXX)
Date: Sun Jun 23 2002 - 15:22:37 EDT
At 07:23 AM 6/23/02, you wrote:
>If the clockwork presents low drag the slip of the fish is very low and the
>fish moves thru the water like a screw in wood. Thus I suggest the accuracy of
>a tafrail log is better than one percent. Unfortunately it doesn't perform so
>well in southern waters since it continually fouls with Sargasso weed.
>
>Don't forget to keep the fish painted black since it looks like a tasty treat
>to many of the denizens and at $40 per replacement can seriusly reduce your
>beer ration. There is a braided closline for sale that works as well as the
>"special" and costly log line sold for the purpose.
>
>Many paddle wheel logs are defficient at low speeds. The magnetic sensor gives
>an impulse whether rotated forward or backwards. Thus whenever the water flow
>is from aft to forward the distance traveled is incremented instead of
>decremented. To approach the same accuracy as a taffrail log one must
>calibrate
>for different sea conditions and headings.
>
>The chip log seems like a good idea if it is streamed regularly but I never
>figured out how to reteive it easily at speed due to its drag.
>
>Walter Guinon
>Lincolnville Maine
This is just a stray memory trace - of the paradoxical kind that doesn't
go away, though essentially valueless.
I was in a Midlands supplier's store - probably in Birmingham (UK)
and I was looking over the amazing variety of cast brassware
(of the kind which was advertized as 'toys') and I saw a taffrail log
hanging on a wall - for sale, new - several minidials and pointers
(for distance run?) and a speed indicator.
Could Walker have been a Midlands company?
Did it expire in the last twenty years or so?
Brian Whatcott
Altus OK Eureka!
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