I have a VDO electric Speedometer and all's I had to go was 1 Mile to
calibrate it.
Kenneth Denver CO.
----- Original Message -----
From: "joe" <chevy1@jps.net>
To: "Jerry Balcom" <jbalcom@earthlink.net>; "oletrucks list"
<oletrucks@autox.team.net>
Sent: Friday, December 01, 2000 8:39 PM
Subject: Re: [oletrucks] electric speedo calibration
> Jerry-
>
> The 5 mile distance must be standard as that's the same method I used to
set
> up a truck that had Moon gauges with an electric speedometer.
>
> I do recall reading an article somewhere that showed a chart with gear
> ratio's and tire diameters. I guess it's time to pull out the stacks of
> Magazines? I want to say the article was based on United Speedometer Co.
>
> Joe Garcia
> Yuba City, CA
> 1950 Chevrolet 3100
>
> http://chevy1.freeservers.com/
> http://50chevy.freeservers.com/
> http://1950Jeepster.freeservers.com/
> -----Original Message-----
> From: Jerry Balcom <jbalcom@earthlink.net>
> To: oletrucks list <oletrucks@autox.team.net>
> Date: Friday, December 01, 2000 6:04 PM
> Subject: [oletrucks] electric speedo calibration
>
>
> >Maybe someone out there knows the answer to this one or can steer me in
the
> >right direction to find the answer. Just bought a Stewart Warner 5"
> electric
> >speedo (for alot of reasons, one of which was to be able to recalibrate
to
> >handle the non-stock drivetrain). My '49 3600 is pushed by a turbo 400,
a
> >10" posi with 2.73 gears and a pair of 255-70x15 meats. The calibration
> >instructions are based on mounting the speedo, driving a measured 5mile
> >length of highway, calculating any discrepancy with this distance on the
> odo
> >and finally finding a cross reference in the supplied table (you then get
> to
> >repull the speedo to reset the "code"on the back of the speedo before you
> >button it all up once again). I called the "engineer" at SW tech support
> to
> >find the final drive gear ratio that the unit is factory calibrated for
so
> I
> >could just recalculate mine based on the above parameters and set the
> speedo
> >before I mounted it. He told me that was impossible to do and that they
> >don't know what the speedos are set for, just how to adjust them if they
> >don't measure the prescribed 5 miles. Is this really rocket science? (Or
> >maybe more like reading tea leaves.) Anyone know how to work out this
> >calibration or am I out in left field? Thanks for any help available.
> >Jerry B.
> >'49 3600
> >oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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