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Re: TR6/250 water temp sending uints

To: tr3driver@comcast.net, triumphs@autox.team.net
Subject: Re: TR6/250 water temp sending uints
From: Dave1massey@cs.com
Date: Mon, 15 Aug 2005 07:46:50 EDT
In a message dated 8/14/2005 11:23:18 PM Central Standard Time, 
tr3driver@comcast.net writes: 
> Dave Massey replied :
> >If that's all you want try adding a small value resistor in series with the
> >sensor.  Start with a 47 Ohm 1/4 and see if you like that reading.  Go up 
> or
> >down from there.
> 
> The thing that worries me greatly about that approach is that you will 
> likely
> wind up with a gauge that can never read full scale !
> 
> I don't know the TR6/GT6 gauge calibration, but some measurements on a spare
> Stag gauge I have indicate that it takes roughly 25 ohms sender resistance 
> just
> to reach the red zone.  With 47 ohms in the circuit, it will never go over 
> 3/4,
> even with the sender shorted.
> 
> Obviously YMMV, but IMO it's important to have accurate information when 
> trying
> to make that decision as to whether to push on home, or call AAA.
> 
Well, I did say "Go up or down from there."  Obviously down is the direction 
to go.  Another alternative is to pull the needle off and replace it in the 
desired position.

Dave




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