looking for someone using the mag to charge the Bat. Built up the charger using the diode and the 1156 bulb. Appears to be working except anything over about half throttle the 1156 bulb gets so bright it looks like it would not last very long and of course gets brighter the higher the throttle setting. All the diagrams I have seen call for the 1156 bulb and of course the brighter it gets it also gets extremely hot. Any suggestion anyone
Bittner engineering.... He has them for 6v. or 12V. Don
Check your wiring. Neither connection of the bulb should be connected to the metal part of the cars body or frame. It sounds like you have either the diode grounded at one end or the bulb grounded at one end.
Richard, If you are charging a 6V battery the bulb will get brighter and you need to add a 6V bulb in series with the 12V bulb. . If you are charging a 12V battery everything should be ok.
It is all connected correctly and I think you are probably correct Glen as I am using a 6 volt battery. I was looking at some info from years ago on the forum and it stated that the 1156 bulb worked well for the 6 volt but maybe I missed something. Yep Don I did see that Bittner had them for sale but mine only cost about 3 dollars to build and it is the same circuit as I understand. Thanks for all of the information. With this forum ask and you shall receive.
Reminds me when I gave a fellow club member on tour a ride back from diner in my car. When we got going there was the big glow under the floor boards and I hollered to him "We're On Fire!" Fortunately he didn't jump out but it was good for a laugh after I told him. Hee hee
I have used a diode and 1156 bulb for years on my 12V battery in my old 1913 Roadster. never had a problem.
Glen you mentioned that maybe I should add another bulb in series with the 1156 would that change the charging current. I would think that it would lower it.
Can someone provide a wiring diagram for this procedure? Jim Patrick
I respectfully disagree that you need to add a 6V bulb in series with a 12V bulb when charging a 6V battery from the magneto unless you simply want to reduce the charge rate. The original circuit was in fact designed to charge a 6V battery and not a 12V battery.
The Bittner Engineering magneto battery charge will not work properly if you are running original Model T coils. The advertising clearly warns you about this.
Ron the Coilman
Comment. Although the magneto was not intended to charge a battery. So unnatural. But if you so chose to do so with the diode, why not use a zener diode to control voltage/amperage? http://www.electronics-tutorials.ws/diode/diode_7.html