Technical Applying a Rev counter on a LZ V12

Hi,

I am building a new car. One challenge is to connect the rev counter. Is there someone who has an experience or ideas how to applying a mechanical rev.counter on a Lincoln Zephyr V12?

 

Cant help you on the rev counter but damn that is awesome !!!

 

Some sort of an industrial rev counter that can count revolutions on a rotating shaft or pulley maybe?

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Diesel application?

This one requires an alternator: https://www.autometer.com/diesel-tach-adapter.html
but there are purely mechanical options also: https://dieselpro.com/engine-gauges...s/gauges-mechanical/tachometer-tacometro.html

 

Your Hot Rod is insanely Cool....
.....Skit Läcker!!!
S'more Pictures?

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Some tachs drive off a generator or alternator as mentioned above.

 

No problem and I appreciate the feedback on the car

 

(Tack så mycket )Thanks a lot for the positive feedback on the car

 

Thanks a lot for the

Thanks a lot for taking the time finding the useful links. Very much appreciated

 

Thanks

 

Evidently a skilled builder, so I think you should be able to do something with toothed belts and a couple pulleys. I assume your tachometer needs to run at half engine speed, as most mechanical tachometers are driven off the camshaft/distributor. Since you have access on the front of the engine/supercharger to a shaft that turns at crankshaft RPM, you need to cut that speed in half. Below is a link to one of many vendors that can provide timing belts and pulleys to cut the speed in half. You will likely have to increase the bore in the pulley you put on the supercharger shaft, and figure out the mounting, tach cable drive, etc, but as I mentioned earlier it appears the skill to do this is available.

https://www.sdp-si.com/products/Timing-Belts-and-Cables/index-2018.php

 

The other way would be to do a custom face on a conventional electric 8-cylinder tachometer. The tachometer would overread by 50%, but your V12's redline is probably ⅔ of a typical modern V8's. That would also afford the opportunity to design a dial face which is visually appropriate to your build.

 

You can drive a mechanical off the cam snout with a doubler. Or you can get a mechanical tach (rev counter?) drive that drives off the back of the generator like they used on the early corvettes. The drive for the cam snout may be easier to come by.

 

Thanks a lot for the advice, link and the suggested solution. Seem doable with some changes to existing config and some efforts

 

Aha! Using generator shaft is not a bad idea I will check and investigate if that is a possible solution -Thanks a lot.

 

Thanks and I agree this could be an option as well

 

It won't work in your application but they did have crank driven speedometer drives for flatheads.
Photo of one here http://builda32fordroadster.blogspot.com/2011/03/stewart-warner-mechanical-tach-drive.html
There are also mechanical tach drive setups for Tractors that with some imagination could be Adapted.fast
This setup fastened to the back of the generator on a Ford tractor but the box and drive gear should be available there without a hassle. https://www.ebay.com/i/323763723515?chn=ps

It seems that many older motorcycles had mechanical tachs with a drive setup that was similar.

No matter what you use it will take some imagination but I think you are more than up to that part.

 

Thanks a lot! This is really good stuff and thanks for the links. I am sure I will works something out with all the advice and possible solution from this Forum. Really big help.

 

Here is an option

https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.com/ulk/itm/202679338524



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Hold on, is there a build thread of that thing? Looks fantastic!!

 

Frame horn / blower snout / C grill / arch, louvers.....just PERFECT..!..

....Inte Lagom!

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Rest of the car ain't shabby either......!

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