triumphs
[Top] [All Lists]

Re: TR6 speedo help needed

To: triumphs@Autox.Team.Net
Subject: Re: TR6 speedo help needed
From: peb3@cornell.edu (Philip E. Barnes)
Date: Wed, 28 May 1997 14:58:59 -0400
Ian asks:
>I have a problem: the previous owner put low-profile tires on my tr6,
>what tire size was the speedo calibrated for?   I'd like to work out
>some sort of correction factor.

Here's the formula I use for figuring speed:

MPH= (RPM x tire diameter in inches x pi)/(final gear ratio x gearbox ratio
x 1056)

I put all this into a spreadsheet and it's pretty handy to keep a copy in
the glovebox.

The speedo on a TR6 was set up for 185-15 tires; calibrated connotes some
sort of accuracy. ;-)

Phil Barnes
Cortland, NY (nowhere near New York City)
peb3@cornell.edu
'71 TR6  CC61193L (20 year owner)



<Prev in Thread] Current Thread [Next in Thread>