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* Using your Tach as a Speedo *

To: "Triumphs" <triumphs@autox.team.net>
Subject: * Using your Tach as a Speedo *
From: "Wayne Brazinski" <wayne@brazinski.com>
Date: Sun, 11 Jul 2004 20:57:36 -0500
References: <NOEDJDCNFBCNELMBFNFEIEIMGOAA.tr3driver@comcast.net>
Hi Everyone!
Took the 3A out twice today - as fast as I dared.  Damn what a good time.
Since my speedo needle does not move until 40mph has been exceeded, and when
it does move it is almost totally random, I would like to guess how fast I'm
going from the tach (until I get it repaired).

>From what I have been told - if I have the 3.9 diff gear ratio I simply
double the first to digits of the RPM - so 3,000 equals 60 mph, and 4,000
equals 80.

So - is this correct?

I also have a TR4 O/D in the car - so I'm hoping to guess using this as
well!

Thanks in advance.

Wayne





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