
Shim Coil Box Contact?
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Topic author - Posts: 712
- Joined: Sun Jan 06, 2019 2:01 pm
- First Name: Michael
- Last Name: Pawelek
- * REQUIRED* Type and Year of Model Ts owned: 1919 Touring, 1925 Coupe
- Location: Brookshire, Texas
- Board Member Since: 1999
Shim Coil Box Contact?
Recently I have noticed that my number one coil has not always been working properly so I thought I’d take apart the coil box to shine up the contacts and see if anything needed to be done. Sure enough I found that the lower contact for the number one coil had recessed itself back into the strip and no longer sticks up. Once I pull it back up should I put a small thin shim underneath it so it doesn’t fall back down into the recess?


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Re: Shim Coil Box Contact?
Get an original coil box for the old contacts. These dont look like originals. Repops are too soft. You will be fighting this problem forever.
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Re: Shim Coil Box Contact?
Ingenuity is a trait all Model T people should have. While John's suggestion is a good one, it doesn't address your immediate problem. I would think that some type of soft, insulating shim to hold the contact up would be appropriate. Me, I'd raise up the contact and put a glob of silicone under it. Once it cures you should be good to go.
1917 Touring
1946 Aeronca Champ
1952 Willys M38a1 Jeep (sold 2023)
1953 Ford Jubilee Tractor
1946 Aeronca Champ
1952 Willys M38a1 Jeep (sold 2023)
1953 Ford Jubilee Tractor
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Re: Shim Coil Box Contact?
Michael-
Until you can get some original contacts, stuff a slice on styro-foam in the slot in the wood from under the contact to the bottom of the box.
: ^ )
Keith
Until you can get some original contacts, stuff a slice on styro-foam in the slot in the wood from under the contact to the bottom of the box.
: ^ )
Keith
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Re: Shim Coil Box Contact?
You can put something under the contact but the best solution is to use the original contacts. Maybe the newer repo contacts are better but the older repos not so much.
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Topic author - Posts: 712
- Joined: Sun Jan 06, 2019 2:01 pm
- First Name: Michael
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Re: Shim Coil Box Contact?
Well, This box was rebuilt some 21 years ago so I don’t know if these are good repros or bad repros! Looked at original boxes on Ebay just for some contacts and some are pretty steep in price…
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Re: Shim Coil Box Contact?
Michael
the only "good" new ones I'm aware of were John Ragan's and they were to the original drawing, from dimensions to material - phosphor-bronze as I recall and will be springy until the end of time. These are not those. Sadly, I believe these, like all of the old Fun-Projects line, are not being made any more (I hope I'm wrong and will be happy if proven thus). Brass repros have no spring temper and will do exactly what your suffering from.
I'd suggest advertising for a complete, but rotted out box. They're out there and are not too rare. Someone will have one or be willing to sell you the contacts out of it.
It will be worth the time/effort on your part
the only "good" new ones I'm aware of were John Ragan's and they were to the original drawing, from dimensions to material - phosphor-bronze as I recall and will be springy until the end of time. These are not those. Sadly, I believe these, like all of the old Fun-Projects line, are not being made any more (I hope I'm wrong and will be happy if proven thus). Brass repros have no spring temper and will do exactly what your suffering from.
I'd suggest advertising for a complete, but rotted out box. They're out there and are not too rare. Someone will have one or be willing to sell you the contacts out of it.
It will be worth the time/effort on your part
Scott Conger
Tyranny under the guise of law is still Tyranny
NH Full Flow Float Valves™
Obsolete carburetor parts manufactured
Tyranny under the guise of law is still Tyranny
NH Full Flow Float Valves™
Obsolete carburetor parts manufactured