VDO Tach 6volt How to install?

[Marcello_6v]

Hi! I'have this VDO Tacho (from oval beetle i think).

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I know how to install modern 12v VDO tacho, but this has 4 "plugs"

- R ? (on left)
- G ? ( on center)
- B ? (on right)
- Ground (ok i know this one)

Thanks!!!
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Nel dubbio...accelera!

[Harris]

Marcello_6v,

The face looks correct enough for this to be an original 0-5000 tach. If so, it originally ran off of a cable on the engine pulley and a wire to the coil.
Ii can be converted, if you don't have the cable, to either 6 volt or 12 volt. Not cheap to do so however.

Please post the number and date on the back to confirm if it's what it appears to be. Can't tell from the photo.

[Marcello_6v]

Hi Harris! Thank you! Sorry for the bad quality of the "rear" photo!

Here another one

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Date (I suppose)
3 /57

Number (I suppose)

85/1/6

I don't have any cable! So now? what is this cable for? What can I do?
_________________
Nel dubbio...accelera!

[Harris]

Marcello,

Numbers are correct for an original. Not many around. North Hollywood Speedometer in California will charge around $ 150 to convert it to 6 or 12 volts--plus shipping. Check there for a good comparable instrument shop. I don't think you can wire it as it is, but could be wrong. Just don't damage it.

This is a diagram of the cable used for this tach borrowed from J. Harasen. The tach is rare and the cable even more rare.

[Marcello_6v]

Thanks Harris! You're so kind!! Ok, i put this one in my cabinet
_________________
Nel dubbio...accelera!

[BulliBill]

My VDO 0 to 5,000rpm set up, just missing the 36hp crank pulley nut drilled with a set screw for the cable (NOS cable too)

Has anyone "made" a crank pulley nut (drilled for cable and drilled for set screw) for use with this type of cable-driven generator/sender for this tachometer? I need to find one or have one made... last piece of the puzzle and then I can put it into use on a Okrasa motor I have.

Bill
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I'm looking for these license plate frames for my fleet:
Coeur D'Alene - Lake Shore Volkswagen
Mission VW - San Fernando
Thornton VW - Stockton

Thanks for any help!

[Harris]

Bill,
Given the cable size and nut thread which you have, I believe one could be machined by a shop. I had a special connection (oil relief nut and gauge sender thread) machinds here at a hot rod speed shop in Dallas. Worked perfectly. These young kid are smart and know how to improvise.

[Vintage oval]

Marcello_6v,

Did you ever get your VDO electrical sender ( generator ) mounted on you Okrasa.
I have a NOS unit with all parts and would like to see a phot of one mounted.

Thanks

Jeff

[Peter_Plade]

Hi Jeff
I have a tach like that installed in my 54 oval.
I decided to drill holes in the rear breast tin and weld in a pipe to route the cable in, think it looks better than the way shown in the original instructions.
Hope this helps you.

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http://vw-bluehats.blogspot.com/

[joe h.]

[Peter_Plade]