Author Topic: Custom u cores anyone?  (Read 20938 times)

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Re: Custom u cores anyone?
« Reply #16 on: December 15, 2011, 20:25:39 pm »
M27 steel is a laminate,you need several layers to get the .105 inch thickness,not just one piece.It won't work unless it's laminates.
Don

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Re: Custom u cores anyone?
« Reply #17 on: December 15, 2011, 20:37:14 pm »
Ok I didn't know it was laminate, I missed that earlier, so the origonal core used some type of ferrite it looks like.
If were using a max of 20kHz we need some pretty thin pieces here.
« Last Edit: December 23, 2011, 16:10:06 pm by HMS-776 »

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Re: Custom u cores anyone?
« Reply #18 on: December 15, 2011, 21:37:47 pm »
What are the limitations of going in the direction? I always thought electrical steel had a very narrow frequency bandwidth

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Re: Custom u cores anyone?
« Reply #19 on: December 15, 2011, 22:09:20 pm »
you can purchase the M27 laminates here at the following website...I contacted them a while back and if I remember right you can get enough to make 10 - 15 cores for around $150.  http://www.protolam.com/page7.html

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Re: Custom u cores anyone?
« Reply #20 on: December 15, 2011, 22:20:21 pm »
Awesome, Thanks Tony,
« Last Edit: December 23, 2011, 18:52:12 pm by HMS-776 »

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Re: Custom u cores anyone?
« Reply #21 on: December 23, 2011, 18:51:49 pm »
Does anyone know what kind of enamel and what the build was on the 29awg wire Stan used in the 5 coil VIC?

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Re: Custom u cores anyone?
« Reply #22 on: January 09, 2012, 00:28:50 am »
This is my first post and I'd just like to say I've learned more on this site in the last 6 months than any other site in the last 5 years.  Thanks!
I believe I may have found a source for ferrite u cores.  Magneticsgroup.com offer ferrite plates which I believe could be shaped with a laser cutting machine commonly found at steel fabricators.  They offer one size, p/n B-1377 which is 3.87" x 3.87" x .118" which should be sufficient for one u core.  Here's the link if anyone is interested.

http://www.magneticsgroup.com/f_other.htm

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Re: Custom u cores anyone?
« Reply #23 on: January 09, 2012, 03:00:50 am »
Mr. Don,

Some here are suggesting Stan used iron or other wire in his dunebuggy coil, and that ferrous wire is the only way to make the vic coils work. I believe you said he used copper for all of his dunebuggy coils. Could you clear up this confusion?