Speedo question.

[tigran]

I know, yaaaawn.

But it's one of those things that is causing me headaches.

My HC Viva is fitted with a CA18DET engine and gearbox - this is setup for an electric speedo drive. The Viva is very much mechanical.

I am hopelessly pap with cables and wires and whatnot. Is there a way I can convert the electrical signal being sent from the gearbox to a mechanical one for the speedo cable?

I've heard the term of a stepper motor being banded about but thought I would ask people with more knowledge on the subject.

Have a cool CROWN vic as thanks

[ChasR]

If I ever manage to make a chip to do pretty much what you want (I have the same issue with the Stag bar the fact that I have no speedo drive). I shall be in touch .

[ianboyd]

I have heard that
www.speedycables.com/index.htm
Can modify original speedo's by installing a stepper motor, to work off a electronic drive, not sure how much that would cost though

But it's probably worth talking to them, I have considered using something like this

www.ebay.co.uk/itm/220977699826?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649#ht_3466wt_946

And driving it of a sensor, whith a magnet fixed to one of the brake discs, or running it of the diff flange,

Depends on what your wanting to do, if it's using the original speedo, then it needs converted some how, depending on the pulse from the electronic speedo drive you have, that may still be suitable to drive an aftermarket one.

[popuptoaster]

Fit the electronic speedo and print a new front so it matches the rest of the Viva dials, I dare say you'll want it to go up higher than a stocvk Viva one does anyway.?

[tigran]

With my gearing the standard viva'll do. Also I :heart: the horizontal speedo - so will check converting the speedo.