RE: Joining two rolls of wire on the secondary coil

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Mccauley, Daniel H by way of Terry Fritz <teslalist-at-qwest-dot-net>" <daniel.h.mccauley-at-lmco-dot-com>


Unforunately this is very bad indeed and a tesla coiler's worst nightmare.
If you did join two wires together like this, you would greatly compromise
the integrity of the secondary and inhibit performance.  However, I see you
said you were winding
a 4ft x 4" secondary.  Whoa!  Good news.  4ft first of all waaayyy to long
for a secondary coil that is only 4" in diameter.  Thats about a 12:1 h/d
aspect ratio.  Typically, secondary coils are built somewhere between 3:1 to
6:1 aspect ratios.

Therefore, if you already have a 20-28" section of your secondary wound,
then you are finished.  Just keep that.  4 foot is definitely too long
especially if you are using relatively thin wire (24-30AWG)  24 AWG would
give you about 2400 turns and 30 AWG would give you about 4500 turns.
Entirely too many turns.  I think the consensus on the list is that a coil
with about 1200 turns works best.

Hope this helps.

Dan


 > Hello!
 >
 > I'm in the process of winding my 4' x 4" secondary coil and I
 > ran out of
 > wire midway.  I have a new roll and I need to connect the new
 > wire to the
 > old.  Will there be any negative consequences to soldering
 > the two wires
 > together?  Every secondary coil I've seen in pictures looks
 > like it's made
 > of one continous wire, so I'm worried perhaps I should have
 > bought a longer
 > roll.  I've spent 3 hours winding already and I don't want to
 > go further if
 > the solder joint will somehow mess things up.  I can't imagine why it
 > would, but this is my first coil and I know squat!
 >
 > Please help!
 > Jack
 >
 >