VSS

[nacelp]

 >Sounds like the cable is spinning the wrong way.
> >The speedo needle has no direct contact with the cable, and just "senses"
> >speed (some use a spinning magnetic, and the needle is magnetic, and just
> >tags along).
> >The odometer only reads in one direction so you can't use a drill motor
to
> >unwind the showing mileage.
> >grumpy
> Thanks,,
> Thats what i assumed was happening... so the only way to get the odo to
work
> would be to gear the VSS to spin the other way??? I can't do it
> electronically???  the speedo reads in both fowards and reverse gears...

I'd imagine the parts are out there to do this, just, I've never run into it
before.  A good spedometer shop should have all kinds of bits for in the
speedo head.
You could run a stepper motor to spin the speedometer cable the right way,
read off the VSS, for a converter from VSS to run said stepper motor.  Long
answer to simple problem.
Grumpy
>
>
>
>
> >
> > > Hi all... I have just added a VSS from a holden commodore and since
> > > it has
> > > subed in the original speedo cable drive, i have also added the
> > > commodore
> > > dash... it all runs fine, except it reads a bit optimistic... (
> > > which i plan
> > > to fix with speedo gear drives) and that the odometer only works in
> > > reverse??? from what i can tell the VSS gives out a binary output...
> > > ie
> > > signal.. no signal... and shouldn't matter which way it is spun...
> > > any
> > > suggestions??? and fixes?? i have thought about making a small
> > > gearbox to
> > > drive it the other direction... or maybe adding an inverter circuit
> > > into the
> > > ouput line??
> > >
> > > regards...
> > >
> > > Ben
> > >
> > >
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> > >
> > >
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