O
Orrin Iseminger
- Jan 1, 1970
- 0
I'm re-winding an antique coil that was used in the low tension
ignition system for a very early internal combustion engine. The
original was embedded in a potting compound consisting of tar. It has
aged and at room temperature more closely resembles brittle hard coal.
There's nothing soft and "tar-ry" about it.
I will be using a plastic bobbin for the new coil. Because the old
tar has a fairly high temperature melting point, I'm afraid to re-use
it for fear of melting the bobbin.
That brings me to my questions:
1) Where can I obtain for a reasonable price a small quantity of
potting compound, say, a pound or two? It can be thermosetting or an
epoxy type. I would much prefer something that can be melted and
poured our of the cannister, should re-winding ever become necessary,
again.
2) Where can I obtain Glyptal, either in quart quantities or in spray
cans? I'd like to give each layer of the coil a coat of Glyptal as
I'm winding.
Thank you.
Orrin Iseminger
Colton, Washington, USA
http://users.moscow.com/oiseming/lc_ant_p/index.htm
So many projects. So little time.
ignition system for a very early internal combustion engine. The
original was embedded in a potting compound consisting of tar. It has
aged and at room temperature more closely resembles brittle hard coal.
There's nothing soft and "tar-ry" about it.
I will be using a plastic bobbin for the new coil. Because the old
tar has a fairly high temperature melting point, I'm afraid to re-use
it for fear of melting the bobbin.
That brings me to my questions:
1) Where can I obtain for a reasonable price a small quantity of
potting compound, say, a pound or two? It can be thermosetting or an
epoxy type. I would much prefer something that can be melted and
poured our of the cannister, should re-winding ever become necessary,
again.
2) Where can I obtain Glyptal, either in quart quantities or in spray
cans? I'd like to give each layer of the coil a coat of Glyptal as
I'm winding.
Thank you.
Orrin Iseminger
Colton, Washington, USA
http://users.moscow.com/oiseming/lc_ant_p/index.htm
So many projects. So little time.
