Re: Jasco info

mredpath@aol.com · Post by **mredpath@aol.com** » Thu Apr 26, 2001 12:18 pm

'I just came from a local shop who overhauls a lot of Cont., Lyc. and
Pratt radials and asked him about the Jasco alternator. He
immediately took me to a Cont. 220 with three hours on it that was
disassembled for a prop strike and put a magetic field guage to the
generator drive and it was strong enough for a washer to attach
itself to it. That would be a reason for the rear main bearing
failures in Continentals. He then showed me a Pratt and it was not as
bad but the washer did try to stick. He feels that is the reason for
blower bearing failures in Pratts. Anything in that sphere will
eventually become magnetized. The parts might last a long time before
any failure is noted, and unless you have taken alot of them apart,
it would be hard to point to what actually caused the problem to
start with As far as a Ranger goes, it will magnetize the gears in
thr rear case, but engine failure from the Jasco is not probable.'

mredpath@aol.com · Post by **mredpath@aol.com** » Thu Apr 26, 2001 12:22 pm

'I am not pointing a finger at Jasco. The field problem applies to all
alternators. Check your car sometime.

Mike'

jstreat360@aol.com · Post by **jstreat360@aol.com** » Thu Apr 26, 2001 2:39 pm

'I spoke with Convingtion and Skytronics on 24 Apr 2001.

Convingtion has not had any failures of the P&W 985 or the 1340. They did however state that they have not been checking the internal parts for magetic fields when they come in for overhaul during teardown. They will be in the future esp if the engine has had an alternator installed.

As for Skytronics, they have not been told of any failures. They do know that there units magnetize the Alt base. Strong enough to hold on to a big paper clip. They will be reading the letters on this site to be better informed if there is a problem.

One also has to question if any of the internal parts on the failed engines were Magnafluxed during overhaul and were not completely demagnetized prior to assembly.

Jamie Treat
AR&R'

jstreat360@aol.com · Post by **jstreat360@aol.com** » Thu Apr 26, 2001 2:39 pm

'I spoke with Convingtion and Skytronics on 24 Apr 2001.

Convingtion has not had any failures of the P&W 985 or the 1340. They did however state that they have not been checking the internal parts for magetic fields when they come in for overhaul during teardown. They will be in the future esp if the engine has had an alternator installed.

As for Skytronics, they have not been told of any failures. They do know that there units magnetize the Alt base. Strong enough to hold on to a big paper clip. They will be reading the letters on this site to be better informed if there is a problem.

One also has to question if any of the internal parts on the failed engines were Magnafluxed during overhaul and were not completely demagnetized prior to assembly.

Jamie Treat
AR&R'

mredpath@aol.com · Post by **mredpath@aol.com** » Thu Apr 26, 2001 8:34 pm

'I don't know about the Pratt, but the shop I went to knows the shop
that originally overhauled the Continenetal that is a very reputable
shop and he said he knows for a fact that the parts were demagnetized
after particle inspection. He has talked with the other shop about
this problem in length and they are aware of the magnetizing problem.'

WALTER ALBERT · Post by **WALTER ALBERT** » Thu Jun 14, 2001 8:37 pm

'HOW CAN A MAGNETIC LOW LEVEL FIELD RUIN A BEARING?????

----- Original Message -----
From:
To:
Sent: Thursday, April 26, 2001 2:18 PM
Subject: [fairchildclub] Jasco info

> I just came from a local shop who overhauls a lot of Cont., Lyc. and
> Pratt radials and asked him about the Jasco alternator. He
> immediately took me to a Cont. 220 with three hours on it that was
> disassembled for a prop strike and put a magetic field guage to the
> generator drive and it was strong enough for a washer to attach
> itself to it. That would be a reason for the rear main bearing
> failures in Continentals. He then showed me a Pratt and it was not as
> bad but the washer did try to stick. He feels that is the reason for
> blower bearing failures in Pratts. Anything in that sphere will
> eventually become magnetized. The parts might last a long time before
> any failure is noted, and unless you have taken alot of them apart,
> it would be hard to point to what actually caused the problem to
> start with As far as a Ranger goes, it will magnetize the gears in
> thr rear case, but engine failure from the Jasco is not probable.
>
>
> 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/
>
>
>

'

robert hensarling · Post by **robert hensarling** » Thu Jun 14, 2001 8:45 pm

'-----Original Message-----
From: WALTER ALBERT
To: fairchildclub@yahoogroups.com
Date: Thursday, June 14, 2001 9:37 PM
Subject: Re: [fairchildclub] Jasco info

I've been wondering that also. Maybe it attracts metal particals floating
around in the oil or something. Anyway, I'm ordering one for my Ranger for
my PT-19. The only thing I'm worried about is if the Jasco will mount up
exactly to the engine. Someone once said that some sort of adapter plate
has to be used because some shaft is to long.
Robert Hensarling
http://www.mesquiterocker.com
Uvalde, Texas

>HOW CAN A MAGNETIC LOW LEVEL FIELD RUIN A BEARING?????
>----- Original Message -----
>From:
>To:
>Sent: Thursday, April 26, 2001 2:18 PM
>Subject: [fairchildclub] Jasco info
>
>
>> I just came from a local shop who overhauls a lot of Cont., Lyc. and
>> Pratt radials and asked him about the Jasco alternator. He
>> immediately took me to a Cont. 220 with three hours on it that was
>> disassembled for a prop strike and put a magetic field guage to the
>> generator drive and it was strong enough for a washer to attach
>> itself to it. That would be a reason for the rear main bearing
>> failures in Continentals. He then showed me a Pratt and it was not as
>> bad but the washer did try to stick. He feels that is the reason for
>> blower bearing failures in Pratts. Anything in that sphere will
>> eventually become magnetized. The parts might last a long time before
>> any failure is noted, and unless you have taken alot of them apart,
>> it would be hard to point to what actually caused the problem to
>> start with As far as a Ranger goes, it will magnetize the gears in
>> thr rear case, but engine failure from the Jasco is not probable.
>>
>>
>> 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/
>
>
>

'

WALTER ALBERT · Post by **WALTER ALBERT** » Sat Jun 16, 2001 7:38 pm

'I HAVE A JASCO IN MY F24 AND THERE IS NOTHING NEEDED TO MOUNT IT. A FRESH
AIR SUPPLY IS NEEDED BUT THERE ARE SEVERAL PLACES TO OBTAIN THAT. WALT

----- Original Message -----
From: robert hensarling
To:
Sent: Thursday, June 14, 2001 10:44 PM
Subject: Re: [fairchildclub] Jasco info

>
> -----Original Message-----
> From: WALTER ALBERT
> To: fairchildclub@yahoogroups.com
> Date: Thursday, June 14, 2001 9:37 PM
> Subject: Re: [fairchildclub] Jasco info
>
> I've been wondering that also. Maybe it attracts metal particals floating
> around in the oil or something. Anyway, I'm ordering one for my Ranger
for
> my PT-19. The only thing I'm worried about is if the Jasco will mount up
> exactly to the engine. Someone once said that some sort of adapter plate
> has to be used because some shaft is to long.
> Robert Hensarling
> http://www.mesquiterocker.com
> Uvalde, Texas
>
>
> >HOW CAN A MAGNETIC LOW LEVEL FIELD RUIN A BEARING?????
> >----- Original Message -----
> >From:
> >To:
> >Sent: Thursday, April 26, 2001 2:18 PM
> >Subject: [fairchildclub] Jasco info
> >
> >
> >> I just came from a local shop who overhauls a lot of Cont., Lyc. and
> >> Pratt radials and asked him about the Jasco alternator. He
> >> immediately took me to a Cont. 220 with three hours on it that was
> >> disassembled for a prop strike and put a magetic field guage to the
> >> generator drive and it was strong enough for a washer to attach
> >> itself to it. That would be a reason for the rear main bearing
> >> failures in Continentals. He then showed me a Pratt and it was not as
> >> bad but the washer did try to stick. He feels that is the reason for
> >> blower bearing failures in Pratts. Anything in that sphere will
> >> eventually become magnetized. The parts might last a long time before
> >> any failure is noted, and unless you have taken alot of them apart,
> >> it would be hard to point to what actually caused the problem to
> >> start with As far as a Ranger goes, it will magnetize the gears in
> >> thr rear case, but engine failure from the Jasco is not probable.
> >>
> >>
> >> 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/
> >
> >
> >
>
>
> 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/
>
>

'

Thekortas@aol.com · Post by **Thekortas@aol.com** » Mon Jun 18, 2001 7:41 pm

'Put one on my F24 w/ 200 H.P. Ranger last year and it mated up perfectly.
Running great so far!
Steve Korta'