Magneto power?

Discussion in 'The Break Room' started by Barnbikes, Aug 4, 2017.

  1. Aug 4, 2017 #1

    Barnbikes

    Barnbikes

    Barnbikes

    Well-Known Member

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    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.
     
  2. Aug 4, 2017 #2

    Brian Rupnow

    Brian Rupnow

    Brian Rupnow

    Well-Known Member Project of the Month Winner

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    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.
     
  3. Aug 5, 2017 #3

    Blogwitch

    Blogwitch

    Blogwitch

    Ex Bogstandard

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    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
     
  4. Aug 11, 2017 #4

    tornitore45

    tornitore45

    tornitore45

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    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.
     

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