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Who Repairs Tachometers?
Posted by: WhenIm64 ()
Date: April 19, 2017 05:37PM

This question was asked of me by a local club member. How should I know? I drive a Rampside with the basic instrument cluster -- a speedometer and a gas gauge. And the speedometer isn't necessary most of the time. smiling smiley

Anyway, this club member has a '65 Corsa in which the tach is now bouncing through about a 500 RPM range all the time.

Where should he turn?

WhyImWhenIm64

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Re: Who Repairs Tachometers?
Posted by: SoloCP ()
Date: April 19, 2017 06:13PM

Try Williamsons Instruments, They restored a 60's Air Guide Tach, Great Service.
[r.search.yahoo.com]-

Don
Kansas City
HACOA
Broken Halo Corvair Garage.
61 Lakewood
62 Monza aka (Flicka)
62 Rampside
63 700 Sedan 3 Speed
64 Spyder Coupe (Bill Pierson Car)
64 Monza Convertible,140/4 Speed,Electric Heat,Kelsey Hayes Wheels
64 Spyder Blown, (Dave Bolduc Car)
64 Monza Convertible 110/Auto (Future Project)
65 Corsa 3.1 Liter Triple Weber (aka Unsafe)
65 Corsa 140/4 Speed with Triple Weber
66 Avenger, Corvair Turbo, Fuel Injected, Air to Water intercool 140. (Michael Mann Car)
67 Monza 110 Auto. Sugar Bear

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Re: Who Repairs Tachometers?
Posted by: SoloCP ()
Date: April 19, 2017 06:17PM

Try this www.williamsons.com

Don
Kansas City
HACOA
Broken Halo Corvair Garage.
61 Lakewood
62 Monza aka (Flicka)
62 Rampside
63 700 Sedan 3 Speed
64 Spyder Coupe (Bill Pierson Car)
64 Monza Convertible,140/4 Speed,Electric Heat,Kelsey Hayes Wheels
64 Spyder Blown, (Dave Bolduc Car)
64 Monza Convertible 110/Auto (Future Project)
65 Corsa 3.1 Liter Triple Weber (aka Unsafe)
65 Corsa 140/4 Speed with Triple Weber
66 Avenger, Corvair Turbo, Fuel Injected, Air to Water intercool 140. (Michael Mann Car)
67 Monza 110 Auto. Sugar Bear

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Re: Who Repairs Tachometers?
Posted by: 66vairman ()
Date: April 20, 2017 09:00AM

WhenIm64 Wrote:
-------------------------------------------------------
> This question was asked of me by a local club
> member. How should I know? I drive a Rampside
> with the basic instrument cluster -- a speedometer
> and a gas gauge. And the speedometer isn't
> necessary most of the time. smiling smiley
>
> Anyway, this club member has a '65 Corsa in which
> the tach is now bouncing through about a 500 RPM
> range all the time.
>
> Where should he turn?

A few folks have done them, but tend to stop doing them after awhile.

Due to the large sweep of the Corsa tachometer the meter assembly is tough to mechanically calibrate. I did my own cars and half a dozen for buddies. I'm not a business and don't charge. I average ten hours per tachometer to get them to read accurately. This is probably why folks don't want to repair them. The other issue is the spring on the needle armature fails. About a third of the units I've worked on had that problem. The meters are OBSOLETE (Note DELCO used three different meter designs - all work electrically the same). After a few tries I gave up trying to repair the springs. The electronics is reliable and easy to fix. The old capacitors have to be replaced, but the other electronic components are usually good.

You said "the tach is now bouncing through about a 500 RPM
range all the time." - that suggests the needle armature spring(s) is broken - not good. The springs don't just return the needle, they are also conductors for the needle armature. When a needle armature spring breaks the meter circuit is open and the needle looses tension.

There are still spare tachometers out there so there is no demand for a modern replacement, but it could be done.

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Re: Who Repairs Tachometers?
Posted by: illinicorsa ()
Date: November 02, 2017 12:04PM

The tach on my 66 Corsa either works fine (e.g., well above 3000 RPM) or drops to zero. This will happen with the car not moving, just sitting in my garage. It will work fine for a few minutes then drop to zero -- then maybe work fine again. Any suggestions?

Steve
66 Corsa
Ofallon MO

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Re: Who Repairs Tachometers?
Posted by: MattNall ()
Date: November 02, 2017 12:45PM

If you are not into electronics / Meter rebuild... find someone who repairs them...

If your car is not a "Factory restored" class car.... swap in a new modern unit with as similar a face as possible.





MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: Who Repairs Tachometers?
Posted by: Frogfinder ()
Date: November 02, 2017 01:53PM

Mine sticks and adds to the mystery. smoking smiley I drive by ear anyway. A replacement will come next dash overhaul.

jeff

66 Corsa 140 4 spd
Houston, Tx

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Re: Who Repairs Tachometers?
Posted by: glivorsi ()
Date: November 02, 2017 02:03PM

Wasn't Craig N doing these?

Greg in Wildwood, MO (part of the St. Louis urban sprawl)

1965 Monza Vert 110PG, Crocus Yellow with black interior and top

2006 Mazdaspeed 6
1997 Honda CBR1100XX

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Re: Who Repairs Tachometers?
Posted by: vairmech ()
Date: November 02, 2017 05:17PM

Someone on here was rebuilding them. He got a tack from me to rebuild and it took two of them and in exchange he did a tach for me. He calibrated and balanced.

I don't remember who that was.

Ken Hand
Handy Car Care
248 613 8586

Vairmech@aol.com

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