[xk] speedo speed increases (no Jag content -- well, remotely at best)

Lovers,

My first car, which I still own, is a 1951 MG-TD. To increase driveability,
I have installed an MGA ring and pinion in its “pumpkin”, changing its ratio
from 5.125 to 4.55.

It all works great, but now my speedo reads 11% low (1 - 4.55/5.125). I
have heard about in-line gearboxes for speedo cables to make such
corrections. However, I haven’t been able to find a supplier.

Does anyone have experience with such a change, and/or can suggest a source?

I am not keen on modifying the speedo itself , which is a Jaeger
chronometric unit (read: Swiss clockwork) — fragile and valuable.

Thanks,

                    --Gary

        '54 XK120 OTS S675866

        '56 XK140 DHC S817720

In reply to a message from Gary Lindstrom sent Sun 25 Sep 2005:

Gary,
Try

http://forums.jag-lovers.org/av.php?767634o04

Andrew–
The original message included these comments:

have heard about in-line gearboxes for speedo cables to make such
corrections. However, I haven’t been able to find a supplier.
Does anyone have experience with such a change, and/or can suggest a source?


1968 3.8S
Zurich, Switzerland
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
–Support Jag-lovers - Donate at http://www.jag-lovers.org/donate04.php

Take your speedo to a Smith’s speedo repair shop and they should be able to
re calibrate it. My XK cost $100nzd. Ian----- Original Message -----
From: “Gary Lindstrom” gary@cs.utah.edu
To: “XK Lovers” xk@jag-lovers.org
Cc: gary@cs.utah.edu
Sent: Monday, September 26, 2005 4:46 AM
Subject: [xk] speedo speed increases (no Jag content – well, remotely at
best)

Lovers,

My first car, which I still own, is a 1951 MG-TD. To increase
driveability,
I have installed an MGA ring and pinion in its “pumpkin”, changing its
ratio
from 5.125 to 4.55.

It all works great, but now my speedo reads 11% low (1 - 4.55/5.125). I
have heard about in-line gearboxes for speedo cables to make such
corrections. However, I haven’t been able to find a supplier.

Does anyone have experience with such a change, and/or can suggest a
source?

I am not keen on modifying the speedo itself , which is a Jaeger
chronometric unit (read: Swiss clockwork) — fragile and valuable.

Thanks,

                   --Gary

       '54 XK120 OTS S675866

       '56 XK140 DHC S817720