Magneto recharge

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Model T Ford Forum: Forum 2017: Magneto recharge
Top of pagePrevious messageNext messageBottom of page Link to this message  By David Woods on Monday, January 23, 2017 - 06:48 am:

I would like to try to recharge the magnets on my '23 T and wondering if anyone has advice for aligning the the magnets to the coils. I have the hogs head off so I have a good view of where the magnets are in relationship to the coils.

I also have seen many threads on using batteries to perform this and see many show four 6v batteries to equal 24v so next question can I use use two 12v batteries instead?

I do have a gauss meter so I can measure before and after I found the recharge had any positive effect.

Thanks!

DavidMagneto


Top of pagePrevious messageNext messageBottom of page Link to this message  By Roger Karlsson, southern Sweden on Monday, January 23, 2017 - 07:14 am:

Three 12 V batteries would be better Four = 48V would be as good as it gets when recharging the magnets inside the engine. Only very short contact needed for full saturation. Experience from Tom Carnegie shows aligning to correct polarity isn't really as critical as previously thought - the magnets gets full strength that lasts even if they previously have been magnetized the other way around.

Check carefully so there's no visible damage to the coil insulation or the brass bolts - in that case it's advisable to do a full restore while you have the engine open. No fun having to pull it soon again..

Here's a discussion where Tom describes his method: http://www.mtfca.com/discus/messages/506218/528397.html?1427399216


Top of pagePrevious messageNext messageBottom of page Link to this message  By Philip thompson on Monday, January 23, 2017 - 08:28 am:

i used my dc welder as the power source it worked great car now hand cranks on magneto. i read how
to do it on here. i found the poles using the compass set the welder on the correct polarity
at about 130 amps and flash the magnets just like using the batteries with no chance explosion or needing to take the batteries out of everything i own. it has to be a dc welder not a buzz box. philip


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