Buzz Coil Wiring

[Buccaneer]

Trying to wire up my batter / buzz coil box for the
Wisconsin RBM wtih the homemade timer.
Can I just run two wires from the box,
(that contains the buzz coil and battery)
they being, a “Com” wire to the timer,
and the Spark Plug wire, or do I need to
run a separate ground wire to the motor?

Another words, will the spark plug base complete
the ground to “light off” the buzz coil?
Thanks.

P.S.- I tried twice to make my drawing larger, but then
it was too big to be accepted. 🙁
……. but, if you click on the image, and then click on it
again, it gets “Big”.

Prepare to be boarded!

• This topic was modified 5 years, 4 months ago by Buccaneer.
• This topic was modified 5 years, 4 months ago by Buccaneer.

[crosbyman]

just fyi … most pictures/attachements can be copied and pasted into Windows Powerpoint where streching things up is easy !

Joining AOMCI has priviledges 🙂

[Tom]

I assume you have a standard Model T buzz coil, with one power terminal on top, one on the bottom, and the spark plug terminal in the middle.

Run one battery terminal (-) to the ground of the motor. Run the other battery terminal (+) to the top terminal of the coil. Then run a wire between the isolated terminal of the timer and the bottom terminal of the coil.

T

[chris-p]

Here you go….

[Buccaneer]

Thanks for the replies guys. Sounds like I should have three separate wires
exiting my box then. I started to do some of the wiring, but then
realized that I haven’t come up with anything for a switch yet to go
in the “Com” wire. I’ll probably look for some kind of knife switch that
I can screw onto the box.

The coil I have is not Model T, but rather a “Detroit” coil.

Prepare to be boarded!

[george-emmanuel]

You can use a toggle switch if you want. All the switch is to do is break the current going to the coil. You can place it between the positive or the negative leads coming from the battery. I built my coil box to do 2 different things: Provide a 6 volt source for running my ELTOs and also to provide spark for RBMs. One box for both types ignitions.

George

[Buccaneer]

George, I ordered at knife switch last night. Thought about
a toggle switch, but didn’t have or see one I could mount
in my 3/4″ thick box.
Regarding “dual” purpose battery boxes, you remind me
that I have a battery operated Bendix that I could probably
use the same battery box.
Thanks!

Prepare to be boarded!

[The Boat House]

[Buccaneer]

Tubs, I had scraps from some oak veneered stair treads I used
to build the box.
Some “Hit and Miss” engine people solder on Fahnestock clips to the Model T coils
to attach the wires, but guessing your bolts will work fine.

Clips on EBay in case anyone is thinking….. “What are Fahnestock Clips!”

https://www.ebay.com/itm/113381058437

Prepare to be boarded!

[The Boat House]

• This reply was modified 5 years, 4 months ago by The Boat House.
• This reply was modified 3 years, 2 months ago by The Boat House.

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