Allen HCCT

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FundyTides
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Allen HCCT

Post by FundyTides » Mon Apr 26, 2021 11:06 am

I have an old Allen HCCT. When I try to test a coil, I am only getting about 3 volts at 1.3 amps. Is this probably a symptom of weak magnets?
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Scott_Conger
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Re: Allen HCCT

Post by Scott_Conger » Mon Apr 26, 2021 11:30 am

If the coil is firing, it sounds like everything is fine.
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BE_ZERO_BE
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Re: Allen HCCT

Post by BE_ZERO_BE » Mon Apr 26, 2021 1:50 pm

Three Volts is typical for the Allen HCCT.
The voltmeter really doesn't provide any useful information as it it the current (Amps) that fire the coil.
I suspect that Allen included the voltmeter more as a marketing decision when they went from the large Jewell meter to the smaller Jewell ammeter.
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Re: Allen HCCT

Post by Adam » Mon Apr 26, 2021 4:20 pm

BE_ZERO_BE wrote: ↑
Mon Apr 26, 2021 1:50 pm
 I suspect that Allen included the voltmeter more as a marketing decision when they went from the large Jewell meter to the smaller Jewell ammeter.[/b][/size]

Actually, The Allen HCCT has a provision for load testing the operation of the magneto in a running car via long test leads. That is the main reason it has the voltmeter.
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FundyTides
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Re: Allen HCCT

Post by FundyTides » Mon Apr 26, 2021 7:19 pm

Thanks guys. I mostly just use the machine to entertain the kids with all the sparks but I do test the odd coil. Nice to know it is working as it should.
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Re: Allen HCCT

Post by BE_ZERO_BE » Mon Apr 26, 2021 11:30 pm

The magneto test as described in the Ford HCCT manual says to connect the car magneto to the HCCT test stand and run the engine at a moderate speed.
The Ammeter should register at least 0.8 Amps.
There is no criteria for a minimum voltage stated in the manual.
This test would be the same on all HCCTs with or without a voltmeter.

The John Regan test does call for a voltage measurement with a specific current load connected to the magneto.
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