Fairchild Club Forum

Posted: **Sun Mar 25, 2001 8:41 am**

'I'm getting my 19 ready to go to the Burnet Airshow on the 14th of April,
and visit with our Esteemed Richard Smith! Richard ferried my 19 from Penn.
to Texas last year for me.

I have trouble hearing my handheld (Icom) especially at low rpms (more noise
for some reason) in my PT-19. I read an article in the Fairchild Flyer that
Richard Reich uses condenser filters to the magnetos.

He says the filters are: NWL captron Div. 907-146-801. .05 MFD, 1000VT.20
amps, MF3A, 99-09, at $50 each. The filters are installed in series with
the "P" lead.

1. Anyone know where I can get these filters?
2. Is the 1000VT a misprint, or does he use this high of voltage as a
safety against arcing?
3. Is the "P" lead the ground?

Thanks,
Robert Hensarling
N53656'

Posted: **Sun Mar 25, 2001 12:11 pm**

'The filters are capacitors and the maximum voltage is printed on the casing
and has no real bearing on the application except that the application should
not exceed 1000V. The P. Lead is the grounding wire and I can see no reason
to put a capacitor in series with the ground as it only would operate when
you switch off the Mags. A capacitor in parallel may do something but you may
a problem inside the Mags. Could be carbon tracking on the distributor block
or bad wires.'

Posted: **Sun Mar 25, 2001 7:06 pm**

'aircraft spruce has them. IT'S A SPECIAL MADE AFFAIR NOT JUST A CAPACITOR.
THE PHYSICAL PART HAS SPECIAL SHIELDING. GOES IN SERIES WITH THE P LEAD...

----- Original Message -----
From: robert hensarling
To: fairchild
Sent: Sunday, March 25, 2001 9:39 AM
Subject: [fairchildclub] radio enhances

> I'm getting my 19 ready to go to the Burnet Airshow on the 14th of April,
> and visit with our Esteemed Richard Smith! Richard ferried my 19 from
Penn.
> to Texas last year for me.
>
> I have trouble hearing my handheld (Icom) especially at low rpms (more
noise
> for some reason) in my PT-19. I read an article in the Fairchild Flyer
that
> Richard Reich uses condenser filters to the magnetos.
>
> He says the filters are: NWL captron Div. 907-146-801. .05 MFD,
1000VT.20
> amps, MF3A, 99-09, at $50 each. The filters are installed in series with
> the "P" lead.
>
> 1. Anyone know where I can get these filters?
> 2. Is the 1000VT a misprint, or does he use this high of voltage as a
> safety against arcing?
> 3. Is the "P" lead the ground?
>
>
> Thanks,
> Robert Hensarling
> N53656
>
>
>
>
> To unsubscribe from this group, send an email to:
> fairchildclub-unsubscribe@yahoogroups.com
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>

'

Posted: **Sun Mar 25, 2001 7:55 pm**

'-----Original Message-----
From: CarlMauro@aol.com
To: fairchildclub@yahoogroups.com
Date: Sunday, March 25, 2001 12:11 PM
Subject: Re: [fairchildclub] radio enhances

Carl, I certainly agree that putting the capacitor in series would seem to
work only with the mags off. I'm confused for sure now. I just re-read the
article and he says he connects the condensor lead to the magneto ground
terminal, and the braid is seperated from the condensor lead and connected
to ground. He comments that "radio reception in my PT-26 was enhance
markedly by the addition of condenser filters to the mags. jPrior to
installing the filters, I could barely understand voicd communications from
kVOR stations and would frequently have to ask ATC to repeat their
instructions. The filters eliminated those problems."

This is what I was going by, but I'd really hate to invest $100 if it won't
help.
Robert Hensarling
http://www.mesquite-furniture.com
Uvalde, Texas

>The filters are capacitors and the maximum voltage is printed on the casing
>and has no real bearing on the application except that the application

should

>not exceed 1000V. The P. Lead is the grounding wire and I can see no reason
>to put a capacitor in series with the ground as it only would operate when
>you switch off the Mags. A capacitor in parallel may do something but you

may

>a problem inside the Mags. Could be carbon tracking on the distributor

block

>or bad wires.
>
>
>To unsubscribe from this group, send an email to:
>fairchildclub-unsubscribe@yahoogroups.com
>
>
>
>Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>

'

Posted: **Sun Mar 25, 2001 7:57 pm**

'-----Original Message-----
From: WALTER ALBERT
To: fairchildclub@yahoogroups.com
Date: Sunday, March 25, 2001 7:06 PM
Subject: Re: [fairchildclub] radio enhances

Thanks Walter. I'll check my AS&S catalog tomorrow and see what it's all
about.
Robert

>aircraft spruce has them. IT'S A SPECIAL MADE AFFAIR NOT JUST A CAPACITOR.
>THE PHYSICAL PART HAS SPECIAL SHIELDING. GOES IN SERIES WITH THE P LEAD...
>----- Original Message -----
>From: robert hensarling
>To: fairchild
>Sent: Sunday, March 25, 2001 9:39 AM
>Subject: [fairchildclub] radio enhances
>
>
>> I'm getting my 19 ready to go to the Burnet Airshow on the 14th of

April,

>> and visit with our Esteemed Richard Smith! Richard ferried my 19 from
>Penn.
>> to Texas last year for me.
>>
>> I have trouble hearing my handheld (Icom) especially at low rpms (more
>noise
>> for some reason) in my PT-19. I read an article in the Fairchild Flyer
>that
>> Richard Reich uses condenser filters to the magnetos.
>>
>> He says the filters are: NWL captron Div. 907-146-801. .05 MFD,
>1000VT.20
>> amps, MF3A, 99-09, at $50 each. The filters are installed in series with
>> the "P" lead.
>>
>> 1. Anyone know where I can get these filters?
>> 2. Is the 1000VT a misprint, or does he use this high of voltage as a
>> safety against arcing?
>> 3. Is the "P" lead the ground?
>>
>>
>> Thanks,
>> Robert Hensarling
>> N53656
>>
>>
>>
>>
>> To unsubscribe from this group, send an email to:
>> fairchildclub-unsubscribe@yahoogroups.com
>>
>>
>>
>> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>>
>>
>>
>
>
>
>To unsubscribe from this group, send an email to:
>fairchildclub-unsubscribe@yahoogroups.com
>
>
>
>Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>

'

Posted: **Mon Mar 26, 2001 12:10 pm**

'Just to throw in my two cents. I am looking at a Spruce and Specialty
Catalog and they show a Magneto filter. For about $30.00 P/N 07-03200 The
filter capacitor, even though some look like they are in series with the
"P-lead", is in fact between the P-lead terminal and ground. The small lead
connects to the magneto and the P-lead connects to a screw terminal of the
magneto filter and to case ground of the magneto. A filter capacitor in
series with the P-lead won't give the desired results. I think that all
that would be accomplished is to disable the Magneto Switch, and you will
have two hot magnetos. All the capacitor does is to pass the High energy
impulses on the P-lead terminal to ground. It won't hurt the Magneto. I
did alright with a TPX-720. I had a similar filter capacitor on a pair of
Bendix SF4RN-8's (65 hp Cub) for over 800 hr. Basically the same an the
Ranger's Bendix SF6RN's
The best results that I ever had was to shield the ignition from the magneto
to the spark plugs, use a noise filter capacitor on the "P-lead terminal" of
the magneto, and shield the "P-lead" he way from the magneto to the mag.
switch.

----- Original Message -----
From:
To:
Sent: Sunday, March 25, 2001 10:11 AM
Subject: Re: [fairchildclub] radio enhances

> The filters are capacitors and the maximum voltage is printed on the
casing
> and has no real bearing on the application except that the application
should
> not exceed 1000V. The P. Lead is the grounding wire and I can see no
reason
> to put a capacitor in series with the ground as it only would operate when
> you switch off the Mags. A capacitor in parallel may do something but you
may
> a problem inside the Mags. Could be carbon tracking on the distributor
block
> or bad wires.
>
>
> To unsubscribe from this group, send an email to:
> fairchildclub-unsubscribe@yahoogroups.com
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>

'

Posted: **Mon Mar 26, 2001 12:48 pm**

'-----Original Message-----
From: robert etter
To: fairchildclub@yahoogroups.com
Date: Monday, March 26, 2001 12:09 PM
Subject: Re: [fairchildclub] radio enhances

Thanks Robert for the info. I'll order the AS & S filters. The ignition is
shielded from the mags to the plugs, but I'll have to check the "P" lead
going to the switch.
Robert Hensarling
N53656'

Posted: **Mon Mar 26, 2001 9:31 pm**

'Correct. A capacitor won't pass DC current, so the mag's would stay hot.
A capacitor from the P lead terminal on the mag to ground would pass
impulse energy. But use a good one... if it fails by shorting, you've
grounded your mag, ie. no spark.

robert etter wrote

A filter capacitor in series with the P-lead won't give the
desired results. I think that all that would be accomplished
is to disable the Magneto Switch, and you will have two hot
magnetos.

-- Dan Casali, Publisher
Lost River Press
Box 1286 Ketchum, ID 83340
208.726.5120

[Non-text portions of this message have been removed]'

Posted: **Fri Mar 30, 2001 7:30 pm**

'will add my dimes worth in. The filter has one end with a six/thirty two
screw which goes to the P lead from the mag switch theother end has a
shielded wire. the shield goes to the oter connection that screws onto the
mag. the inner conductor goes to the inner devic e that plugs into the mag.
keep in mind that the end with the acrew and the wire at the other end will
read zero resistance. the filtering action takes place by capacitor
wrappings around the center of the gadget and then to the case of the
filter. therefore the P lead connects directly to the mag .......Just a
simple filter that keeps trash out of your radios... the lead from the mag
switch to the filter must be shielded and grounded...walt

----- Original Message -----
From: robert etter
To:
Sent: Monday, March 26, 2001 1:12 PM
Subject: Re: [fairchildclub] radio enhances

> Just to throw in my two cents. I am looking at a Spruce and Specialty
> Catalog and they show a Magneto filter. For about $30.00 P/N 07-03200
The
> filter capacitor, even though some look like they are in series with the
> "P-lead", is in fact between the P-lead terminal and ground. The small
lead
> connects to the magneto and the P-lead connects to a screw terminal of the
> magneto filter and to case ground of the magneto. A filter capacitor in
> series with the P-lead won't give the desired results. I think that all
> that would be accomplished is to disable the Magneto Switch, and you will
> have two hot magnetos. All the capacitor does is to pass the High energy
> impulses on the P-lead terminal to ground. It won't hurt the Magneto. I
> did alright with a TPX-720. I had a similar filter capacitor on a pair of
> Bendix SF4RN-8's (65 hp Cub) for over 800 hr. Basically the same an the
> Ranger's Bendix SF6RN's
> The best results that I ever had was to shield the ignition from the
magneto
> to the spark plugs, use a noise filter capacitor on the "P-lead terminal"
of
> the magneto, and shield the "P-lead" he way from the magneto to the mag.
> switch.
>
> ----- Original Message -----
> From:
> To:
> Sent: Sunday, March 25, 2001 10:11 AM
> Subject: Re: [fairchildclub] radio enhances
>
>
> > The filters are capacitors and the maximum voltage is printed on the
> casing
> > and has no real bearing on the application except that the application
> should
> > not exceed 1000V. The P. Lead is the grounding wire and I can see no
> reason
> > to put a capacitor in series with the ground as it only would operate
when
> > you switch off the Mags. A capacitor in parallel may do something but
you
> may
> > a problem inside the Mags. Could be carbon tracking on the distributor
> block
> > or bad wires.
> >
> >
> > To unsubscribe from this group, send an email to:
> > fairchildclub-unsubscribe@yahoogroups.com
> >
> >
> >
> > Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/
> >
> >
> >
>
>
>
> To unsubscribe from this group, send an email to:
> fairchildclub-unsubscribe@yahoogroups.com
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>

'

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