Iron toroid? [It works]
Zum Beispiel, Mon Aug 06 2007, 03:48PMI'd like to hear what you people think about using an iron toroid on a TC. Is there anything I should worry about, other than the coil turning into an induction heater?
I've found a cheap(-ish) source of these 90° round iron pipe corners, and I think that by welding these together I could make a good looking and economical toroid (sure, the usual styrofoam-thingy-covered-in-aluminium-foil-toroid works, but it doesn't look that good, now does it.)
So, could someone with more experience shed some light on the subject?
Re: Iron toroid? [It works]
..., Mon Aug 06 2007, 04:36PM
Aside from the prctical problems associated with having this heavy block of Fe with a few hundred thousand volts on it ballanced on top of a long pole, it should work fine...
..., Mon Aug 06 2007, 04:36PM
Aside from the prctical problems associated with having this heavy block of Fe with a few hundred thousand volts on it ballanced on top of a long pole, it should work fine...
Re: Iron toroid? [It works]
Zum Beispiel, Fri Aug 10 2007, 04:33PM
So I went and bought four of these pipe corners and silver soldered them together.
The result: Quite possibly the most beautiful home-made toroid I've ever seen! The finished product is 16x16x4cm in size and weights 1kg. Its not as pretty as a real spun toroid and is a lot hevier too, but you can't argue with the price. The pipes cost about 2.5€ a pop and the solder 8€/stick.
Threw it atop my "big" SSTC and gave it a run, works just as well as the squished-up-alumium-foil-thingy I used before and looks way better. Obviously you can't make a really big toroid out of these, because of the weight issue, but it's great for small to medium toroids.
Unfortunately I don't have access to a camera at the moment, but when I get some pics I'll post them right away!
edit: Well ok, I "took a picture" of it with my scanner. Should give you a good idea about what I'm talking about.
Zum Beispiel, Fri Aug 10 2007, 04:33PM
So I went and bought four of these pipe corners and silver soldered them together.
The result: Quite possibly the most beautiful home-made toroid I've ever seen! The finished product is 16x16x4cm in size and weights 1kg. Its not as pretty as a real spun toroid and is a lot hevier too, but you can't argue with the price. The pipes cost about 2.5€ a pop and the solder 8€/stick.
Threw it atop my "big" SSTC and gave it a run, works just as well as the squished-up-alumium-foil-thingy I used before and looks way better. Obviously you can't make a really big toroid out of these, because of the weight issue, but it's great for small to medium toroids.
Unfortunately I don't have access to a camera at the moment, but when I get some pics I'll post them right away!
edit: Well ok, I "took a picture" of it with my scanner. Should give you a good idea about what I'm talking about.
Re: Iron toroid? [It works]
Experimentonomen, Fri Aug 10 2007, 05:14PM
Seem like a cute lil toroid :)
Experimentonomen, Fri Aug 10 2007, 05:14PM
Seem like a cute lil toroid :)
Re: Iron toroid? [It works]
Terry Fritz, Sun Aug 12 2007, 05:24AM
Weight is a concern, but 1kg is pretty easy
Induction to the toroid is a don't care, the fields just don't reach that far.
You might be careful of rust. All that ozone... You could probably grind it off) But maybe a light coating of oil or silicone oil will help keep it shinny... Maybe just car wax...
Cheers,
Terry
Terry Fritz, Sun Aug 12 2007, 05:24AM
Weight is a concern, but 1kg is pretty easy
Induction to the toroid is a don't care, the fields just don't reach that far.
You might be careful of rust. All that ozone... You could probably grind it off
) But maybe a light coating of oil or silicone oil will help keep it shinny... Maybe just car wax...Cheers,
Terry
Re: Iron toroid? [It works]
sparky, Sun Aug 12 2007, 05:50AM
Wow, that looks beautiful... nice work! Thanks for sharing! I'd love to see that powered up on video!
I'm always looking for new innovative ways for making toploads, and as for that ozone concern...yeah I'd coat the toroid in a clear coat acrylic spray to prevent oxidation.
sparky, Sun Aug 12 2007, 05:50AM
Wow, that looks beautiful... nice work! Thanks for sharing! I'd love to see that powered up on video!
I'm always looking for new innovative ways for making toploads, and as for that ozone concern...yeah I'd coat the toroid in a clear coat acrylic spray to prevent oxidation.
Re: Iron toroid? [It works]
ragnar, Sun Aug 12 2007, 08:25AM
That silver-soldering is certainly nicely done... I presume the pipes don't mate, they're a matching fit on all sides?
ragnar, Sun Aug 12 2007, 08:25AM
That silver-soldering is certainly nicely done... I presume the pipes don't mate, they're a matching fit on all sides?
Re: Iron toroid? [It works]
Shaun, Wed Aug 15 2007, 10:11PM
Wait, wouldn't a spray or coating cause problems? Wouldn't it try to insulate the toroid but fail miserably and burn up? Even if you avoided all this, why would it not degrade streamer performance?
Shaun, Wed Aug 15 2007, 10:11PM
Wait, wouldn't a spray or coating cause problems? Wouldn't it try to insulate the toroid but fail miserably and burn up? Even if you avoided all this, why would it not degrade streamer performance?
Re: Iron toroid? [It works]
Hazmatt_(The Underdog), Wed Aug 15 2007, 11:29PM
What kind of source are you getting the elbows from?
I like places I can walk in and buy things from, but if I have to mail order I can look into that too.
Hazmatt_(The Underdog), Wed Aug 15 2007, 11:29PM
What kind of source are you getting the elbows from?
I like places I can walk in and buy things from, but if I have to mail order I can look into that too.
Re: Iron toroid? [It works]
Zum Beispiel, Thu Aug 16 2007, 11:27AM
I don't have any coating on mine, so we'll see if it starts to rust. But I doubt it will be that bad.
I'll try to make a slightly bigger one next week and also get some better pics. Stay tuned...
Zum Beispiel, Thu Aug 16 2007, 11:27AM
Shaun wrote ...
Wait, wouldn't a spray or coating cause problems? Wouldn't it try to insulate the toroid but fail miserably and burn up? Even if you avoided all this, why would it not degrade streamer performance?
Well, for a SSTC it will have to use a seaparate breakout point anyway, so I doubt a thin coating on the toroid will matter. Also, you can get a stainless steel version of these, but they cost about 10 times more (making them so expensive that a real toroid will be a smarter choice). Wait, wouldn't a spray or coating cause problems? Wouldn't it try to insulate the toroid but fail miserably and burn up? Even if you avoided all this, why would it not degrade streamer performance?
I don't have any coating on mine, so we'll see if it starts to rust. But I doubt it will be that bad.
Hazmatt_(The Underdog) wrote ...
What kind of source are you getting the elbows from?
I like places I can walk in and buy things from, but if I have to mail order I can look into that too.
I found these at a big hardware store that mainly focuses on the professional and industrial market. But I'm sure that if you ask you can find these at almost any hardware store, atleast by ordering.What kind of source are you getting the elbows from?
I like places I can walk in and buy things from, but if I have to mail order I can look into that too.
I'll try to make a slightly bigger one next week and also get some better pics. Stay tuned...
Re: Iron toroid? [It works]
Steve Ward, Thu Aug 16 2007, 05:34PM
Ive had aluminum (foil tape) toroids get so hot i didnt want to touch them The secondary coil has a B-field too, Terry.
Steve Ward, Thu Aug 16 2007, 05:34PM
Induction to the toroid is a don't care, the fields just don't reach that far.
Ive had aluminum (foil tape) toroids get so hot i didnt want to touch them The secondary coil has a B-field too, Terry.
Re: Iron toroid? [It works]
Kizmo, Tue Oct 16 2007, 12:31PM
I made iron toroid as well for my tabletop sgtc :)
http://xs320.xs.to/xs320/07422/sovitusta.jpg
That pipe is same stuff they use @ bombardier for exhaust manifolds of Lynx and Skidoo four-stroke engines
Kizmo, Tue Oct 16 2007, 12:31PM
I made iron toroid as well for my tabletop sgtc :)
http://xs320.xs.to/xs320/07422/sovitusta.jpg
That pipe is same stuff they use @ bombardier for exhaust manifolds of Lynx and Skidoo four-stroke engines
Re: Iron toroid? [It works]
Dr. Dark Current, Tue Oct 16 2007, 12:37PM
BTW, I can see a micro black hole in your picture.
Dr. Dark Current, Tue Oct 16 2007, 12:37PM
Kizmo wrote ...
I made iron toroid as well for my tabletop sgtc :)
http://xs320.xs.to/xs320/07422/sovitusta.jpg
That pipe is same stuff they use @ bombardier for exhaust manifolds of Lynx and Skidoo four-stroke engines
Looks really nice, but that's a tabletop coil? :-o how big is it?I made iron toroid as well for my tabletop sgtc :)
http://xs320.xs.to/xs320/07422/sovitusta.jpg
That pipe is same stuff they use @ bombardier for exhaust manifolds of Lynx and Skidoo four-stroke engines
BTW, I can see a micro black hole in your picture.
Re: Iron toroid? [It works]
Kizmo, Tue Oct 16 2007, 12:55PM
Secondary is about 280mm tall. That is really small coil compared my 8"
That black hole used to be motorcycle license plate :)
Kizmo, Tue Oct 16 2007, 12:55PM
Secondary is about 280mm tall. That is really small coil compared my 8"
That black hole used to be motorcycle license plate :)
Re: Iron toroid? [It works]
Fessenden, Wed Oct 17 2007, 01:26AM
Are these bends you speak of really iron? I have seen some similar exhaust bends in steel, but never iron. What is the wall thickness of these iron bends?
Also, did you have much trouble soldering these? I know iron is difficult enough to weld, but solder? Seems like it would be very difficult to get it clean enough for a strong bond. I have no doubt you could silver solder similar steel bends with good results.
Fessenden, Wed Oct 17 2007, 01:26AM
Are these bends you speak of really iron? I have seen some similar exhaust bends in steel, but never iron. What is the wall thickness of these iron bends?
Also, did you have much trouble soldering these? I know iron is difficult enough to weld, but solder? Seems like it would be very difficult to get it clean enough for a strong bond. I have no doubt you could silver solder similar steel bends with good results.
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