Batt charger via magneto question re ammeter

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Model T Ford Forum: Forum 2011: Batt charger via magneto question re ammeter
Top of pagePrevious messageNext messageBottom of page Link to this message  By Erich Bruckner, Vancouver, WA on Saturday, December 24, 2011 - 08:16 pm:

The set up by John Regan shown in the mtfca electrical systems book was easy to build, working well.

Is there a way to wire it so the charging will indicate on the ammeter?


Top of pagePrevious messageNext messageBottom of page Link to this message  By Erich Bruckner, Vancouver, WA on Saturday, December 24, 2011 - 08:17 pm:

Should add I am talking about a 26 touring with the generator removed.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Erich Bruckner, Vancouver, WA on Sunday, December 25, 2011 - 12:55 am:

Also, Merry Christmas to all.


Top of pagePrevious messageNext messageBottom of page Link to this message  By John F. Regan on Sunday, December 25, 2011 - 01:04 am:

The amount of charging is pretty small and the 26/27 ammeter is not a super accurate device that has any accuracy beyond telling you if you are charging or not. The bulb will tell you more positively than the meter but if you want to see the meter move you can simply connect the wire that normally goes to the battery connection instead you connect it to the yellow/black wire connection that is coming from the generator cutout. That way the charge will be dumped through the bulb, diode, and now the ammeter but only do that if you don't have any generator connected and make sure that the yellow/black wire that normally connects to the cutout is either removed at the barrier strip end or the cutout end is taped up because that wire is "hot" all the time and comes straight from the battery through the ammeter.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Erich Bruckner, Vancouver, WA on Sunday, December 25, 2011 - 10:40 am:

John, Thank you.

I was wondering if that would work. The ammeter does leave a lot to be desired.


Top of pagePrevious messageNext messageBottom of page Link to this message  By John F. Regan on Sunday, December 25, 2011 - 11:27 am:

If your car is wired as original you can make the yel/black wire connection at the leftmost (terminal 1) connection on the firewall barrier strip terminal.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Erich Bruckner, Vancouver, WA on Sunday, December 25, 2011 - 01:18 pm:

John, it is and I may do that just for kicks.

Thanks again.

P.S. Also wish to thank you for all the great service, product, information, help, etc. to date.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Bill Stephan on Sunday, December 25, 2011 - 01:31 pm:

Dare to be different Erich... install an analog A.C. voltmeter in the hole. 0-50 V.A.C. should suffice. ws


Top of pagePrevious messageNext messageBottom of page Link to this message  By John F. Regan on Monday, December 26, 2011 - 10:53 pm:

Bill:

Aside from the fact that an AC voltmeter is not likely to be found that will fit in that small hole in the 26/27 dash cluster, what good does it do to monitor the magneto voltage at various RPM's since what the man wants to know is how much charging is going one and that depends on the magneto, the battery condition, and the state of charge. Even though it is not precision I think the ammeter gives you a better read on that than does an AC voltmeter. Now a DC voltmeter on the battery would be useful but again the size of the meter hole is very small.


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