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*This website is under reconstruction *
** questions email at bjerm10@gmail.com
*This website is under reconstruction *
** questions email at bjerm10@gmail.com
Model T Coils.com Service Map
42 States and 4 other countries served to date ...
- Thank you for the support -
Bad Windings / Open Secondaries
Winding Replacement
When we encounter a dead coil with bad secondary windings we usually just set it aside and choose a different one to rebuild. There are still plenty of good cores available. However, we sometimes have dead coils that are special in some way. Maybe they came with the car. Maybe they have sentimental value. Maybe they are later coils that were custom made to fit your early coil box. Maybe they're just a nice set of metal tops that you don't want to break up.
Replacing windings can be tricky business, but I will do so upon special request. *Note; I am referring to post-1913 coils only. I will not work on the early boxes. You must provide good donor coils AND the boxes you want saved must be in good condition. The price to "transplant" primary/secondary windings will depend on the time involved. Each transplant will be evaluated individually so we can come up with a fair price we both agree on.
Old Coils / History
Do you have any old coils sitting around?
Check your shelves! I will consider buying them from you, depending on their condition. Customers sometimes do this to offset the costs of rebuilding their good sets.
Here's a general idea of what I will pay for old coils (and a brief coil history lesson). The prices are shown as untested / tested and rebuildable; *if there are no points/hardware on the coils, the price will be slightly less. Overall condition is also a determining factor.
1913 - 1915 6-screw brass top coils - $5/$20
1916 - 1917 4-screw brass top coils - $5/$20
1916 - 1918 black fiber-cased coils (I'm not interested in these but wanted to include them in the timeline for the coil history)
1917 - 1919 wood top coils with NO manufacture markings on the boxes - $5/$10
1919 - 1923 wood top coils with the "Ford" script burned in the side of the box - $5/$10
1920 - 1922 "Tractor Unit" coils were made with larger capacitors, heavy duty points, and tar with a higher flash point, can be used on cars too - $5/$10
1923 - 1927 wood top coils with the "Ford" script stamped on the upper edge of the box - $5/$15
*Aftermarket Genuine-stamped KW coils - $5/$15
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Spools / History
Brass Spool Spacer, 1909 - 1914
Brass Spool Spacer, 1909 - 1914
Brass Spool Spacer, 1909 - 1914
Approximate dates of manufacture ...
Brass Spool Spacer, 1914 - 1917
Brass Spool Spacer, 1909 - 1914
Brass Spool Spacer, 1909 - 1914
Steel Spool Spacer, 1917 - 1925
Aluminum Spool Spacer, 1925 - 1927
Aluminum Spool Spacer, 1925 - 1927
Aluminum Spool Spacer, 1925 - 1927
Aluminum Spool Spacer, 1925 - 1927
Aluminum Spool Spacer, 1925 - 1927
Finishing Options (Au Naturel or Cleaned&Oiled)
Tuning
HCCT
Strobo-Spark
Strobo-Spark
The Hand Cranked Coil Tester (HCCT) is a wonderful device created during the Model T era. There were many different brands and configurations, but they were all similar in operation. **The HCCT in the picture above is made by the Allen company and is my personal unit that I restored. Click here for pics and info on the restoration.
It uses an actual Ford Model T flywheel and magneto ring. But, instead of an engine spinning it around, you grab the handle and turn it by hand. It was much more precise than the "buzz boxes" of the day, and is in fact still used successfully today. The downside? They are heavy, non-portable, hard to find, and kind of expensive.
Click here to view pictures of My Allen HCCT Restoration Project
Strobo-Spark
Strobo-Spark
Strobo-Spark
Fast forward about 100 years and we have the Strobo-Spark! This 21st century creation is a fantastic machine and brings more precision to setting the current draw of the Model T coil. It essentially functions like a HCCT but has the advantage of being portable. It is small, lightweight, and conveniently plugs into your a/c outlet.
It tests for capacitor health and function, displays actual sparks in the window (single, double, triple), and measures current draw amperage. It also operates at a simulated RPM of about 450 to better emulate real driving conditions. Folks have been successfully using these machines for years now.
ECCT
ECCT continued
ECCT continued
"Dwell Time to Fire - The time required for the coil to build up current sufficient to pull open the points causing the spark plug to fire a spark."
This, rather than current draw, is how the ECCT tunes coils. It is a fundamental change from all previous coil testing devices, and is the brilliant creation of Mr. Mike Kossor.
Visit ModelTECCT.com for more information.
ECCT continued
ECCT continued
ECCT continued
From ModelTECCT.com; "Engine performance depends on ignition timing not coil current so ECCT coil adjustment is done by accurately measuring coil dwell time to fire spark, not coil current. Each coil can be precisely adjusted to fire a single hot spark with equal dwell time to fire. This guarantees no double sparking and minimizes coil to coil (cylinder to cylinder) timing variation to achieve optimal engine performance. There simply is no reason to settle for approximate current based adjusting techniques today like the HCCT to adjust Model T coils."
General Pricing
I will diagnose your coils, clean the wood, oil the wood, repair the boxes to the extent possible, paint the tops black with non-conductive paint, clean the contacts, clean the posts, dig out the old capacitors, solder in new capacitors, repot the boxes with hot tar, install new brads in the doors, install new KW points, tune the coils, bench run them before mailing. **PLEASE NOTE; I WILL NOT WORK ON THE AFTERMARKET BLACK PLASTIC-CASED COILS or THE GENERIC COILS OF THIS TYPE**
Diagnosing, Misc.
Just pay $24 for return shipping and I'll give you a complete diagnosis, FREE of CHARGE.
*Not all rebuild jobs are the same. I will work with you depending on what you need, and we'll come up with a price that we both agree on.
And, when your finished coils arrive in the mail, take them straight from the box, put them in your car, and enjoy!
Hit and miss Engines
Some hit and miss engines run on Model T Ford ignition coils. I am now offering coils for the hit and miss community. I can solder clips on if you need them but that will be an additional charge These will be completely rebuilt, adjusted, tuned, functional, and ready to run. Like my other coils, I guarantee my work for one year.
*Note; These sales will depend on my inventory at any given time. Also, I will not work on/rebuild any other style or manufacturers’ ignition coil. ONLY Model T Ford/KW coils.
Other High Voltage Applications ...
Antique Morse Code Transmitters
Antique Morse Code Transmitters
Antique Morse Code Transmitters
Antique Morse Code Transmitters
Antique Morse Code Transmitters
Stationary Engines
Antique Morse Code Transmitters
DIY Electric Shock Mouse Traps
DIY Electric Shock Mouse Traps
DIY Electric Shock Mouse Traps
DIY Electric Shock Mouse Traps
Ham Radios
DIY Electric Shock Mouse Traps
Antique Outboard Motors
Antique Outboard Motors
DIY Electric Shock Mouse Traps
Antique Outboard Motors
For Sale
Orders
You can order a custom-made complete set at any time and I will build them just for you. Of course this depends on my inventory at the time. Prices usually range from $270 to $330 depending on the style/condition of the boxes (metal tops will be more). Don't forget to add $24 for return shipping.
**Note; if you have good cores to exchange, you will be credited depending on their condition and make/year of manufacture.