Tach repair - sources

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rnd5553
Posts: 61
Joined: Fri Nov 06, 2015 5:22 pm

Tach repair - sources

Unread post by rnd5553 » Sun May 14, 2017 9:04 am

Looking for a repair shop (source) that could fix a defective, non working factory (Corsa) tach, anyone have any sources/experiences?

66vairguy
Posts: 1321
Joined: Tue Dec 21, 2010 3:44 pm

Re: Tach repair - sources

Unread post by 66vairguy » Sun May 14, 2017 1:05 pm

SEARCH here and at other forum - Topic comes up often. Myself and others have commented a few times here.

I've repaired some for friends, but I will NOT do anymore - just too time consuming to calibrate them. A few others that did them seem to have quit also. The meter adjustment is tedious and one slip and you destroy the unit. If the meter armature has failed then there are no new parts. The electronics is easy to fix and adjust the gain. Getting the meter to read accurately and linear can take many hours of tedious work.

BTW - The term "repair" can mean different things. Just getting the needle to move is one thing - getting an accurate reading is another.

64powerglide
Posts: 1198
Joined: Tue Mar 25, 2014 9:18 pm
Location: Kalamazoo Mi..

Re: Tach repair - sources

Unread post by 64powerglide » Sun May 14, 2017 1:56 pm

http://www.bobsspeedometer.com/1/120/tachometers.asp

Never used then but have heard nothing but good work is what they do.
64Powerglide, Jeff Phillips

Kalamazoo, Mi..

63Spyderd
Posts: 5
Joined: Wed Feb 01, 2017 7:47 pm

Re: Tach repair - sources

Unread post by 63Spyderd » Thu May 18, 2017 11:44 am

The Corvair Ranch repairs and calibrates Corvair tachs. They have a good selection of spare parts including the correct replacement germanium transistor, should it be needed.

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