Tachometer

I might also add that I only wanted a 2" tach. That limited my choices all the more, wanting a low RPM unit.
 
I don't remember where I bought these but they are VDO gauges. I have a full pressurized engine to go with the oil pressure gauge.
 

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I had North Hollywood Speedometer make me an electric tach, registering from 0 to 3000 RPM, with a face matching the Model A's factory gauges. They used a VDO tach as a base. Paid $125 for it. Looks factory stock and is mounted on the steering column. A good speedometer shop can make you about anything exactly the way you want it.

You can also use Isspro tachs that are made for diesels (I have a 3000 RPM tach in my Cummins-powered Dodge that runs out of steam at 2,400 RPM), but you then would have to attach the magnets to the flywheel. If you still have 6 volt electrics, the picking gets really thin.
 
Brother Hesekiel said:
I had North Hollywood Speedometer make me an electric tach, registering from 0 to 3000 RPM, with a face matching the Model A's factory gauges. They used a VDO tach as a base. Paid $125 for it. Looks factory stock and is mounted on the steering column. A good speedometer shop can make you about anything exactly the way you want it.

You can also use Isspro tachs that are made for diesels (I have a 3000 RPM tach in my Cummins-powered Dodge that runs out of steam at 2,400 RPM), but you then would have to attach the magnets to the flywheel. If you still have 6 volt electrics, the picking gets really thin.
Click to expand...

Your Cummins only goes 2400????
My Powerstroke goes over 4500.
 
haha
here we go
"Your Cummins only goes 2400????
My Powerstroke goes over 4500."
haha

QGolden, yes I am on 12 V. Look at the spec for the model I posted, tho, not sure it matters (can't remember); it may only affect the bulb in it for nighttime backlighting...
 
tbirdtbird said:
QGolden, yes I am on 12 V. Look at the spec for the model I posted, tho, not sure it matters (can't remember); it may only affect the bulb in it for nighttime backlighting...
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Thx
I did look at the spec, hence the question.

That is what I am wondering, if voltage matters to a tach.
 
QGolden said:
Thx
I did look at the spec, hence the question.

That is what I am wondering, if voltage matters to a tach.
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Was wondering that as well - I see lots of 12V tachometers around the $50 mark, but go to 6V and you're looking at $125 and up.

Or, if 12V works, I might go for an older look and put these in:

1897_d.jpg
1837_d.jpg
 
I'am running 12V. I also have two [2] Sun Tachs. one is a RC85, the other is a IT451. I have been told that the IT451 is for a diesel. I like that one better for the 5.0 sweep on the face. Wondering if it can be retrofit for a 4cyl. Its now 12V 8cyl.
 
Does anyone know if the voltage rating only applies to the backlight bulb?

Seems to me they would count pulses regardless of system voltage, but they probably have an amplifier to power the needle coil, and it may be voltage specific. I just dunno', but I'll bet someone here does.
 
QGolden said:
Does anyone know if the voltage rating only applies to the backlight bulb?

Seems to me they would count pulses regardless of system voltage, but they probably have an amplifier to power the needle coil, and it may be voltage specific. I just dunno', but I'll bet someone here does.
Click to expand...

Yes, voltage matters on some brands.
It depends on the design of the circuitry.
 
QGolden, contact VDO directly (go right to the horses mouth as it were), they will be able to tell you. I do not know myself and don't want to give u wrong info
 
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