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Fairbank's morse Fm-j Rotory Magneto-Help


 
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J Patton
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Joined: 22 Nov 2011
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Location: Columbus Ohio

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PostPosted: Thu Nov 24, 2011 9:00 am    Post subject: Fairbank's morse Fm-j Rotory Magneto-Help Reply to specific post Reply with quote

Hi.I have a Fairbanks morse 1 1/2 Hp Z Style-D Engine.with a FM-J Rotory Magneto.this mag will fire when cranked real fast.it is gear driven by the engine.is there any way to make more spark with less cranking power? can not crank engine hand crank fast enought to start. do the magnut's go bad Question thank you for any help. Jeff....
 
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Kentb of SWMO
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PostPosted: Fri Nov 25, 2011 8:04 am    Post subject: Re: Fairbank's morse Fm-j Rotory Magneto-Help Reply to specific post Reply with quote

Likely your impulse spring is broken. The impulse spring does two things. One is it causes the mag to spin fast there when the impulse is tripped when hand cranking. It also cause the timing to be retarded so one can hand crank the engine WITHOUT the engine kicking back.

Kent
 
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gtx1967jewison
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PostPosted: Fri Nov 25, 2011 3:45 pm    Post subject: Re: Fairbank's morse Fm-j Rotory Magneto-Help Reply to specific post Reply with quote

Yes over time magnets can get weak &they can be easily
recharged by any good magneto shop.
 
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LJD
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PostPosted: Fri Nov 25, 2011 5:46 pm    Post subject: Re: Fairbank's morse Fm-j Rotory Magneto-Help Reply to specific post Reply with quote

Do you hear the mag clicking loudly when you are cranking it? If not, you've got impluse problems like Kentb of SWMO already mentioned.
 
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J Patton
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PostPosted: Sat Nov 26, 2011 7:30 pm    Post subject: Re: Fairbank's morse Fm-j Rotory Magneto-Help Reply to specific post Reply with quote

I wonder if recharging the magnet's will hold Question can you buy a new magnet rotor Question oh this a rotory mag. not a impuls mag.thank's so much for all the help Very Happy Jeff Patton
 
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