Magneto power?

[Barnbikes]

In your opinion would a standard 4 cyl. tractor magneto fire 2 plugs per hole? Want to build a v8 but can not find a 8 cyl. magneto.

 

[Brian Rupnow]

Probably not. Current will take the path of least resistance, and all let go at once. Which means it would fire one plug but not the other.

 

[Blogwitch]

Barnbikes,

Maybe the way to go would be to gear up the magneto to twice it's normal speed and feed it into an 8 cylinder distributor, the tractor magneto may already have it's own 4 cylinder distributor built in.. Purely a mechanical solution.

I have only had dealings with the Minimag 'Falcon' magneto, which is only for a single cylinder, but could easily be up speeded to drive two or four plugs, as long as a distributor is used to send the power to the correct plug.

http://minimagneto.co.uk/Products.php

My build

Got to tips and links on here and mine is the very first post

http://www.floridaame.org/index.htm


John

 

[tornitore45]

If a spark source is connected to 2 cylinders one in compression and the other into exhaust the spark will strike on the side with lower pressure. In other words the wrong cylinder.