6 volt coil testing

6 volt coil testing procedure ?

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PanheadBob58
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6 volt coil testing

#1

Post by PanheadBob58 » Wed Jul 10, 2019 12:40 pm

I was watching on youtube a guy showing how to test a 6 volt coil, his just happened to be the round type, and he showed testing for continuity on the side terminals (or top on his coil) and also looking for an ohm reading from the spark plug ends to the side terminals. The coil I have tested good for the continuity but didn't get any reading for the ohms on the plug wire to side terminals, is the test shown on the youtube video a correct testing method, the manual (Clymer) I have says there is no way to test a coil and just install a known good coil for testing purposes. One last question would be if I wanted to find a reproduction looking 6 volt coil, what manufacturer would you suggest?



beachwv
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Re: 6 volt coil testing

#2

Post by beachwv » Wed Jul 10, 2019 1:43 pm

There is a process for checking coils in Harley shop manual. I have not had luck with repop coils except the round ones. I buy used originals hoping for one that works or try to find 6v Beck coils.

PanPal
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Re: 6 volt coil testing

#3

Post by PanPal » Wed Jul 10, 2019 7:53 pm

I would think you really need to know what your looking at on meter readings. They may also need to be powered up to the point they heat up before you see a weak or failing coil. I just removed one that would start the bike fine all the time, but then fail in under a minute and the bike would die.

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Re: 6 volt coil testing

#4

Post by Buddhahoodvatoloco » Thu Jul 11, 2019 3:55 am

""""Becks, they also look way kewl..
beachwv wrote:
Wed Jul 10, 2019 1:43 pm
There is a process for checking coils in Harley shop manual. I have not had luck with repop coils except the round ones. I buy used originals hoping for one that works or try to find 6v Beck coils.
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Re: 6 volt coil testing

#5

Post by Excalibur » Thu Jul 11, 2019 8:05 am

With our Harley style of coil, the primary circuit and the secondary circuit do not connect internally. The primary resistance should be about 1.5ohms

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Re: 6 volt coil testing

#6

Post by beachwv » Fri Jul 12, 2019 2:55 pm

Here is a pic of a Beck coil. You can see how see how easy to mount the plug wires and that it's nice solid connection. These were sold by a company named Tungsten, Beck coil with the Tunsten sticker.
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Re: 6 volt coil testing

#7

Post by RUBONE » Fri Jul 12, 2019 4:23 pm

You can make a temporary coil tester easily if you have a spare timer. Clamp a variable speed drill in a vise or to a table with the timer shaft driven by it, connect a battery to the coil, timer to the coil, plugs in the leads, everything grounded, and let it run for a long period of time. The coil will heat up as if in use and if it is going to break down it will appear at the plugs.

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