In a message dated 98-10-13 01:29:27 EDT, you write: << > What size spark could Lou draw from the middle of the secondary coil > when he could draw 1" from the top? > Malcolm >> Malcolm, all, Good question. I'll forward your question, and the questions of others, to Lou, so it may take awhile to get his responses. But let me express my, and his appreciation for everyone's responses to Lou's work. John Freau