Re: electronic speedos

["Dennis C." <dennis.2914@xxxxxxxxx>]

I have an Autometer electronic speedometer in my 63 SF.

Typically there is a pulse generator that goes in the transmission
where the speedometer cable attaches.  The speedometer reads the
pulses and translates it to miles per hour.  There is a very simple
calibration that sets the speedometer, changing gear ratio or tire
sizes is not a problem, simply recalibrate the speedometer.

HOWEVER
There is not a pulse generator for my Borge Warner T-10 transmission
available.  I made an adapter and put the pulse generator on the end
of the speedometer cable under the dash, it works fine.

I do have another unit that I have not attached.  It is a GPS pulse
generator.  It senses your speed just as a standard GPS unit does
however it just sends out pulses to the speedometer.  Now that you
have asked the question I need to get it out and connect it.  If you
are interested I will let you know how it works.

I have not seen an electronic speedometer that uses the magnets on the
drive shaft however  I'm sure they work just fine, just older
technology.  Some of the cruise controls use magnets on the drive
shaft and accurately send the speed data back to the control unit.

I have a manual transmission, I am able to use the pulses off of the
coil for my cruise control.

Please feel free to ask more questions however a call to one of the
gauge companies like Autometer will get you current and accurate
information.

Take Care
Dennis C.

On Feb 27, 2:33 pm, george smith <bt...@xxxxxxxxx> wrote:
> Does anyone have a used one for sale or can explain in laymans terms how they work? That's what I'm going to need in my car.
> As always,thanks in advance.
>
> George

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