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Queston on B magneto timing

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loveshisallis

02-03-2008 14:10:52




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I replaced the 12 v distributor with a FB magneto on my 51 Model B . To time it I have set it up where the magneto impulse snaps just (on Number ONE)as the CENTER mark is visible in the window. But, it will not fire and I was wondering if I could get some good answers here.(I checked the plugs and the wires and the mag is putting out good spark all the way around.)
Lastly, i notices that the female end where the magneto mates up is a bit smaller than the same one that came with the magneto. thanks

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dakota dave

02-03-2008 19:10:06




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 Re: Queston on B magneto timing in reply to loveshisallis, 02-03-2008 14:10:52  
If you took the factory distrubuter off you need to change the gear and shaft for a magneto. they are not the same.



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loveshisallis

02-04-2008 09:32:31




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 Re: Queston on B magneto timing in reply to dakota dave, 02-03-2008 19:10:06  
Dakota;

Can you explain exactly what and how much I need to tear it down to replace the gear as you sugggest? It is good that I have the parts.
Thanks



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Jeff Z.

02-03-2008 17:43:31




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 Re: Queston on B magneto timing in reply to loveshisallis, 02-03-2008 14:10:52  
Mag Info

http://dueyschutter.freeservers.com/photo6.html



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Jeff Z.

02-03-2008 17:45:11




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 Re: Queston on B magneto timing in reply to Jeff Z., 02-03-2008 17:43:31  
More Mag Info

http://www.worldpath.net/~thompson/acb/magtiming/magtiming.htm



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Rod (NH)

02-03-2008 16:31:42




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 Re: Queston on B magneto timing in reply to loveshisallis, 02-03-2008 14:10:52  
Also make sure that #1 is on the compression stroke and not the exhaust stroke when the CENTER mark is visible.



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DickL

02-03-2008 14:49:14




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 Re: Queston on B magneto timing in reply to loveshisallis, 02-03-2008 14:10:52  
First make sure the wires location is like this.

third party image



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loveshisallis

02-03-2008 18:18:23




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 Re: Queston on B magneto timing in reply to DickL, 02-03-2008 14:49:14  
DickL;

thaks for the response on timing of the mag.
So my other question is if the mag meets up mechanically with the female end on the engine it is a fair fit, yes? I ask as it appears that the governor gear (one run with the original 12 v distributor)is a bit smaller than the governor gear which came with this mag.



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