Testing parts

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Model T Ford Forum: Forum 2005: Testing parts
Top of pagePrevious messageNext messageBottom of page Link to this message  By Mack Jeffrey Cole on Thursday, February 21, 2008 - 10:22 pm:

I got lucky and bought some T parts on ebay.Got a nice original amp gauge that works.I use a small battery and a coin and bump accross the terminals of the meter,the needle moves and I fiqrure it must be ok.

But what I do want to know is,If I am at a swap meet,say Chickensaw,and I find a used meter on a table,what is a safe way to test that meter before I spend my money? Is there a ohm meter test?Of course I want to use a method that is safe for the meter and not offending to the vendor.
Considering the arrival of a excellant reproduction amp meter,the used meter market should see a measurable drop in prices,therefore,if tested as working,should be a bargin.
I have a small digital meter that is thin and pocket style so I can whip it out when I want to check buzz coils for rebuildablity.
I have also thought there might be a way to use a small bulb and a battery with 2 small wires,and use that for continuty test.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Seth Harbuck on Thursday, February 21, 2008 - 10:31 pm:

Yes, Mack - provided it is an ammeter that you want to test. Take you a good (new!) 6 volt lantern battery and a 1 ohm 10 watt resistor. Hook everything in series and the needle should deflect to somewhere near 6 amps. Turn the meter around and it should deflect about 6 amps the other way.

Don't hold the resistor since it's gonna get hot real quick. Just long enough to get a reading.

That's what I'd do.

If you need the resistor, let me know. Battery not included.

Seth


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