[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [TCML] WINDING A FLYBACK
Nope, kapton tape is by far the best for this, but it's a bit pricey. You
don't need any teflon if you use that though.
On Wed, Nov 23, 2011 at 10:57 AM, Scott Bogard <sdbogard@xxxxxxxxx> wrote:
> Hi Time,
> From what I can tell Mylar is the material of choice for the
> discerning flyback builder, but I'm not sure where to find a 1-in wide roll
> of it, so I'll probably stick to the teflon. Trouble will be holding the
> thing together since teflon by nature is slippery. Perhaps there is a
> cheap epoxy I can saturate paper with to hold the layers together...
>
> Scott Bogard.
>
> On Wed, Nov 23, 2011 at 9:20 AM, Tim S <stm800@xxxxxxxxxxx> wrote:
>
> > I did a test a couple of years ago with silver anti static bag material.
> > 2 inch round copper disks like a spark gap and placed a single sheet of
> > anti static bag material in between,the material was slightly bigger
> > diameter than the disks.
> > Then adjusted the all thread rod to sandwich the plates together tightly
> > and ramped up the voltage to 10 kv @ 30~45 khz with a solid state driver.
> > blue corona was seen in the dark but no arc through occurred.
> > some one else might want to try it and post more results.
> >
> > Happy Holidays All.
> >
> > Tim
> >
> > --- On Wed, 11/23/11, Adam <teravolt.org@xxxxxxxxx> wrote:
> >
> > From: Adam <teravolt.org@xxxxxxxxx>
> > Subject: Re: [TCML] WINDING A FLYBACK
> > To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
> > Date: Wednesday, November 23, 2011, 2:58 AM
> >
> > I'm not so sure rubber cement would be a good insulator. I used teflon
> tape
> > because it is very plastic, and when pulled tightly it for the most part
> > conformed to the windings and squeezed air out.
> >
> > As for rosin, use a 50 50 mix of beeswax and rosin. That's what they used
> > to use in the 40s for insulation, and it works well. Doesn't shrink on
> > cooling and it's nice and plastic.
> >
> > http://imgur.com/a/OPw3U
> >
> > On Tue, Nov 22, 2011 at 7:25 PM, Scott Bogard <sdbogard@xxxxxxxxx>
> wrote:
> >
> > > Yeah I think I'm going to avoid potting it, as much as that will give a
> > > better product, to build a vacuum machine to do it properly, I think
> I'll
> > > try other routes. I'm thinking the rubber cement and paper will be a
> > good
> > > idea, should be voltage resistant, and I can coat the wire with fresh
> > > cement as I wind it, ensuring no air underneath. Than again the idea
> of
> > > using rosin is good as well, and will be less likely to break down over
> > > time, and require less heat than wax, so as not to damage the teflon.
> I
> > > think I'm going to have to try some things, if I have more questions
> I'll
> > > be sure to send them your way.
> > >
> > > Scott Bogard.
> > >
> > > On 11/22/2011 3:15 PM, Adam wrote:
> > >
> > >> Don't use parrafin. The problem I've encountered with that is its
> > massive
> > >> shrinkage when it cools, which leads to cracks and air bubbles.
> Instead
> > >> use
> > >> beeswax, or a mixture of rosin and beeswax. It doesn't shrink nearly
> as
> > >> much.
> > >>
> > >> http://i.imgur.com/UOQ5U.jpg
> > >>
> > >> As for leading the wire thru, I just put the next layer of tape
> 'under'
> > >> the
> > >> wire, so it's just a continuous spiral.
> > >>
> > >> On Tue, Nov 22, 2011 at 12:37 PM, Scott Bogard<sdbogard@xxxxxxxxx>
> > >> wrote:
> > >>
> > >> Hi Adam,
> > >>> That is impressive, not exactly what I was looking for but
> > impressive
> > >>> nonetheless, elegant in its simplicity even. My only concerns are
> > thus,
> > >>> the presence of air between windings since it is not technically
> potted
> > >>> (which could be rectified easily by swapping out the electrical tape
> > with
> > >>> some kind of paper, and then potting in paraffin or epoxy, as long as
> > it
> > >>> does not get too hot to melt the Teflon) and how long it took to
> build
> > >>> (25
> > >>> hours, ugh...) I am planning on making a number of flybacks, so I
> will
> > >>> have to find a way to expedite the process, even if it is just
> mounting
> > >>> it
> > >>> on a rotating rod. You have given me much to think about, thanks
> very
> > >>> much
> > >>> for sharing, I'm thinking maybe I will do this with paper coated in
> > >>> rubber
> > >>> cement (which shouldn't melt Teflon, and provide decent dielectric
> > >>> shielding) I'll probably have to make one layer at a time, since it
> > won't
> > >>> stick to itself, but should make a fairly rigid finished product,
> How
> > do
> > >>> you do the lead through from one layer to another? Just leave the
> wire
> > >>> sticking out until you put down your tape then bring it over?
> > >>>
> > >>> Scott Bogard.
> > >>>
> > >>> On Mon, Nov 21, 2011 at 6:31 PM, Adam<teravolt.org@xxxxxxxxx>
> wrote:
> > >>>
> > >>> Not sure if I'm doing this right....
> > >>>>
> > >>>> But this might help you somewhat http://teravolt.org/fryback.**php<
> > http://teravolt.org/fryback.php>.
> > >>>> It's
> > >>>>
> > >>> my
> > >>>
> > >>>> results at making an FBT.
> > >>>> ______________________________**_________________
> > >>>> Tesla mailing list
> > >>>> Tesla@xxxxxxxxxx
> > >>>> http://www.pupman.com/mailman/**listinfo/tesla<
> > http://www.pupman.com/mailman/listinfo/tesla>
> > >>>>
> > >>>> ______________________________**_________________
> > >>> Tesla mailing list
> > >>> Tesla@xxxxxxxxxx
> > >>> http://www.pupman.com/mailman/**listinfo/tesla<
> > http://www.pupman.com/mailman/listinfo/tesla>
> > >>>
> > >>> ______________________________**_________________
> > >> Tesla mailing list
> > >> Tesla@xxxxxxxxxx
> > >> http://www.pupman.com/mailman/**listinfo/tesla<
> > http://www.pupman.com/mailman/listinfo/tesla>
> > >>
> > >> ______________________________**_________________
> > > Tesla mailing list
> > > Tesla@xxxxxxxxxx
> > > http://www.pupman.com/mailman/**listinfo/tesla<
> > http://www.pupman.com/mailman/listinfo/tesla>
> > >
> > _______________________________________________
> > Tesla mailing list
> > Tesla@xxxxxxxxxx
> > http://www.pupman.com/mailman/listinfo/tesla
> > _______________________________________________
> > Tesla mailing list
> > Tesla@xxxxxxxxxx
> > http://www.pupman.com/mailman/listinfo/tesla
> >
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla
>
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla