Ignition 01 Restoring Model T Coils Part 3 of 3

This is the last of three (3) uploads on the restoration of the Model T coils. Mike Vaughn of Lincoln, NE demonstrates the steps necessary to select coils for restoration and then all of the restoration steps.

[@aeoliankid1]

A very thorough and well presented discussion on how to restore the Model T coil! I especially appreciate the written outline of the major topics to be covered. I'd enjoy seeing the proper technique for using an old hand cranked tester, as I have one, and can't really afford the modern electronic tester.

[@modelt-tips6985]

Thanks for your comment.

[@denniscnaz2844]

very good video, quite informative, very useful. thanks a million for taking the time to produce it. just one thing, I would mention to use rosin core solder. I use similar techniques on rebuilding antique radio coils, transformers and capacitor banks.

[@modelt-tips6985]

Dennis, thanks for taking the time to comment on our videos. You are correct, we should have mentioned that the solder must be rosin core.

[@1967maan]

A great video, now I can reebild my coils. Thank you :)

[@modelt-tips6985]

Magnus Andersson Thanks for taking time to comment on out videos.

[@modelt-tips6985]

Thanks for taking the ​time to comment on our videos.

[@thomasstemmer4767]

very informative video. not sure if it would cost more than it is worth to have it done professionally but just wanted to say that open or shorted coils can be rewound. if you have a coil winding machine they can be rewound yourself using the original coil form. just count the number of turns when unwinding the coil and make sure the exact number of turns go back on the coil. i have done this with coils in antique radios.
again not really sure if it would be practical because the coils are potted in a wood box but in the metal box that parts are potted in a radio you can use a heat gun to soften up the tar and pour it out like you pour the new tar in. make sure you don't burn yourself on the hot metal box.
if a coil gives you the correct resistance reading on an ohm meter it can not be open. an open coil would read infinity. what can happen is an intermittent short between the windings of the coil or an intermittent short between one or more of the windings and ground. this could cause the low current voltage in the ohm meter to be able to read the correct resistance across the coil but when a higher voltage or current is applied to the coil in this case by your spark tester it causes the coil to short out in this case causing no spark. one other less likely possibility is an intermittent open where the ends of a broken wire are touching and as the wire heats up they separate causing an open circuit. i have seen this problem in the filament of a vacuum tube but never in a coil.

[@modelt-tips6985]

Interesting! Thanks for taking the time to comment on our videos.

[@trabbipaul]

Super Videos.
Now i know how the Coils work on a Modell T.
I dont had a Modell T but a little other Car that is simlpe like a Ford T too.
My little Trabant,he is a little bit mhh modern but easy to repair and driving.
Sincerelly Paul from Germany.
PS: The next ist understand how the Magneto works.

[@modelt-tips6985]

Thanks!