MTFCA Forum

After rebuilding a few hundred coils during 12 years, I now know why I should wear gloves while pouring Tar in the rebuilded coils.

Andre
Belgium

ouch!..........

As the old saying goes we live and learn!

Owwie ouch!.... ( plus explicatives )... Been there done that, it happened with my second set of rebuilt coils years ago.

One should not deprive one’s children of the adversities that made men of our fathers.

Where do you source the "Tar" from Andre? I have reused some from old coils but never have enough.

Steep Type3 roofing tar ... Is what I use. ....For most of us, it's best to contact the local company that does commercial roof replacements to purchase at least 5 lb. . instead of buying from major suppliers a 100 lb block

What is the max. temperatur of the tar for the capactors ???

Toon

Very good question.. I never used a thermometer on the tar.. I would heat slow, occasionally stirring and when in a liquid state stir more until small bubbles may come up slowly and smoke a little. Stir a little more and notice the thinner viscosity and then pour the waiting coil boxes and top off. Never had a capacitor fail after pouring, and for the heck of it, retrieved the capacitor out of the repoured box and the capacitor itself, the orange drop I use, was not physically or electronically changed from the heat of the tar......
Artificial intelligence suggests temperature around 350 to 375° f, as a temperature to pour fluid hot tar.

Ouch! I wear my welding gloves when I pour coils, this is a good reminder for me.

I got my tar from a local family owned roofing company. I met with the 75 year old owner and explained what I was doing. He examined and smelled(!) my sample and determined that it was #3 roofing steep, as noted above. The company has pallets full of 100lb "kegs" which they melt in heated tanker trucks. One of the guys grabbed a five gallon bucket and filled it with random chunks of tar, and he would not take any payment. A lifetime supply for me.

My local club poured coils the week before I joined, so I haven't had the pleasure....

jp.... That was a definite early Christmas present !

Also be sure not to over heat the tar or it can spontaneously combust in flames! Don't ask how I know

I use the old tar I took out of the coils.
To fill up the missing tar I have 10 kilo of new tar that I had from a nearby roofing business for free.

Andre
Belgium