Coil capacitors

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adenautomotive
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Coil capacitors

Post by adenautomotive » Mon Mar 09, 2020 12:33 pm

Just got off the phone with Langs coil capacitors are on back order dont know when they will have more , anyone have a source for them i'm ready to do some coils


FATMAN
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Re: Coil capacitors

Post by FATMAN » Mon Mar 09, 2020 2:45 pm

I have a few, Bob


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Re: Coil capacitors

Post by DHort » Mon Mar 09, 2020 3:41 pm

Adams Antique Auto has them.
Last edited by DHort on Mon Mar 09, 2020 10:26 pm, edited 1 time in total.


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adenautomotive
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Re: Coil capacitors

Post by adenautomotive » Mon Mar 09, 2020 3:42 pm

Bob sent you a pm


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Re: Coil capacitors

Post by John Dow » Mon Mar 09, 2020 9:32 pm

I have 8ea capacitors purchased from Langs last summer and never opened the package. I'd sell all 8 for $15 + shipping. PM me if interested.

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Re: Coil capacitors

Post by Duey_C » Wed Mar 11, 2020 1:06 am

Dare I ask this? Do you fellows have FULL particulars on these capacitors, including micro farad ratings? I thought sadly lacking in the T world where I looked. I should've just contacted Bob! :)
I admit my focus is for OT reasons at this time. Wait, the DU-4 and ZR-4 magnetos are oft-times associated with the model T and this is a similar study/need for capacitors in rotating coil/condenser magnetos.
Since I lost my mind mind, I feel more liberated

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Re: Coil capacitors

Post by John E. Guitar » Wed Mar 11, 2020 4:50 am

Duey C, this thread from 2011 has a lot of useful information about coil capacitors:

http://www.mtfca.com/discus/messages/17 ... 1322781074

I had the Bosch ZE1 in my Le Zebre rebuilt a year or so back by the local magneto guru. The capacitor in that was a lot smaller than the Model T capacitors.


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Re: Coil capacitors

Post by troutjohn » Wed Mar 11, 2020 9:08 am

John Dow, sent you a PM.

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Re: Coil capacitors

Post by JohnH » Wed Mar 11, 2020 8:13 pm

Duey_C wrote:
Wed Mar 11, 2020 1:06 am
Dare I ask this? Do you fellows have FULL particulars on these capacitors, including micro farad ratings?
The capacitors are 0.47uF 400V, and most importantly have a high dv/dt rating. This is where most folk get unstuck when using ordinary types which fail quickly. http://www.funprojects.com/products/5007CAP-HiD.aspx

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Re: Coil capacitors

Post by Duey_C » Thu Mar 12, 2020 1:31 am

Thank you gentlemen. Gives me info to consider. :)
Looking for 0.22 MFD 400 volt. Darn it. Thought I had dV/dT ratings in hand.
Robust enough for the ZR-4 and possibly the same capacitor for the DU-4. Working with the U-4's.
I need to contact the info-man whether it's Millifarad or Microfarad...
I let Andy do my hot T coils...
Please excuse the thread drift Mark! Did you find/get your capacitors. :)
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Re: Coil capacitors

Post by JohnH » Thu Mar 12, 2020 4:23 am

Duey_C wrote:
Thu Mar 12, 2020 1:31 am
Looking for 0.22 MFD 400 volt.
You can use two of the 0.47uF capacitors in series to get that capacitance, provided there's room to fit them of course.


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Re: Coil capacitors

Post by Chris Barker » Fri Mar 13, 2020 4:27 am

Shouldn't that be in parallel??


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Re: Coil capacitors

Post by Luke » Fri Mar 13, 2020 6:27 am

No, John's correct.

2 x 0.47uF 400V caps in series will give a total capacitance of 0.235uF at 800V, certainly near enough to the 0.22uF required.


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Re: Coil capacitors

Post by Chris Barker » Fri Mar 13, 2020 11:50 am

Sorry, I misunderstood.
I thought he was trying to get 0.47 from two 0.22s!


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Re: Coil capacitors

Post by NealW » Fri Mar 13, 2020 1:05 pm

A couple of months ago I tried buying some capacitors to rebuild my spare coils. Lang's was out of stock then, with no idea when they'd get more. I called Snyders and I think that they said that they had "hundreds". They are the orange, rounder ones shown in the left on the photo. They are a little wider than the one on the right that Lang's had in stock. Anyway, at least you can get those kind if other places are also out of stock on the narrower kind.
Attachments
capacitor.JPG


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Re: Coil capacitors

Post by jab35 » Sat Mar 14, 2020 9:53 am

From an earlier post by John Regan, in reference to the two capacitors shown in NealW's post:

By John F. Regan on Tuesday, February 26, 2013 - 02:09 pm:
",,,,the capacitor that Snyder has pictured on his web site is the SBE type 418 cap and it is commonly called an "orange drop" capacitor and it is the same capacitor that Fun Projects sells as our part number 5007CAP and is the cap with the 900 dV/dT rating. The capacitor pictured above and marked 011-408474 is the capacitor Fun Projects sells as 5007CAP-HiD which is rated at 1700 dV/dT and is a bit smaller than the "orange drop" type capacitor that we have all used for years. The 011-408474 is "flatter" and thus leaves more room when nestled beside the coil winding. ,,,"


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Re: Coil capacitors

Post by Scott_Conger » Sat Mar 14, 2020 11:14 am

Either one pictured works fine. The one on the left generally requires the glass partition to be removed in order to fit. A little more work, but that's all. Buy and use with confidence.
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Re: Coil capacitors

Post by NealW » Sat Mar 14, 2020 5:30 pm

The one on the left generally requires the glass partition to be removed in order to fit.
Yep, that's what I had to do on the one "Ford" coil that I rebuilt a month or so ago. It was interesting to see the old, big condenser that got replaced with the orange capacitor. The others that I rebuilt were 1961 K-W's that had a smaller capacitor.
Last edited by NealW on Sat Mar 14, 2020 6:04 pm, edited 1 time in total.


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Re: Coil capacitors

Post by Scott C. » Sat Mar 14, 2020 5:58 pm

I recently rebuilt a coil that had a normal points distributor type condenser in it. It was running and working fine in my 26 coupe. I should have posted a picture of it. The only capacitor that I have used, has been the thin rectangular ones from Lang's.


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Re: Coil capacitors

Post by Ron Patterson » Sat Mar 14, 2020 6:14 pm

I have been rebuilding Model T Ford ignition coils for over 30 Years.
I kept examples of the range of various replacement capacitors I found inside.
Many .047 U Farad caps, Metalized Mylar and electrolytics.
I seems that some felt size was the most important criteria when in reality the DV/DT rating was the critical factor.
Here is a picture of that archive.
Another funny thing is I found was rocks, gravel, body putty, newspaper, silicone spray foam and, believe it or not, cement used as re-potting material.
Ron Patterson
Attachments
Capacitor Archive 001.JPG
Capacitor Archive 001.JPG (43.9 KiB) Viewed 2451 times

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Re: Coil capacitors

Post by JohnH » Sat Mar 14, 2020 6:28 pm

Ron Patterson wrote:
Sat Mar 14, 2020 6:14 pm
Another funny thing is I found was rocks, gravel, body putty, newspaper, silicone spray foam and, believe it or not, cement used as re-potting material.
Ron Patterson
Just done a set of coils and found cotton waste as the 'potting' material.
DSCF3572.JPG


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Re: Coil capacitors

Post by DHort » Sat Mar 14, 2020 10:13 pm

Ron,

That would make a good display at the museum. Don't forget the rocks.

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