Today's Message Index:
----------------------
1. 09:13 PM - Re: Melted wire (Gary L Vogt)
2. 09:35 PM - Re: Melted wire (Bob Steward)
3. 09:42 PM - Re: Melted wire (Frank Sundram)
4. 09:49 PM - Re: Melted wire (Bob Steward)
5. 09:50 PM - Re: Melted wire (Bob Steward)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
No ones ever heard of this?
Gary
Sent from my iPad
On Sep 20, 2012, at 7:27 PM, Gary Vogt <teamgrumman@yahoo.com> wrote:
> One of the Tigers I maintain started having that old wire burning smell. N
ot all the time. Off and on. Smoke once. Never repeatable.
>
> A mechanic outside Oshkosh identified 51PA3 as having a 'rough, bubbly sur
face.' This wire was under the panel toward the middle in a bundle of wires
.
>
> Yesterday, I found the same thing without the knowledge of the previous fi
nd. 51PA3 is a ground wire. No circuit breaker or fuse.
>
> I followed the wire to the engine side and noticed several melted looking a
reas.
>
> Figuring the wire needed to be replaced anyway, I cut into it and put an a
mmeter in series. The battery relay that is energized by adding ground the t
he middle terminal is at the end of the wire.
> This wire drew 0.065 to 0.70 amps. The really odd thing was that it got r
eally hot while I was holding it.
>
> I replaced it with No.18 wire. The removed wire had a LOT of places on th
e wire where the shielding had either been melted or worn away; I couldn't t
ell why the shielding was missing. The wire in those areas was very corrode
d.
>
> Anyone else ever seen anything like that?
>
> From: Bob Steward <n76lima@mindspring.com>
> To: teamgrumman-list@matronics.com
> Sent: Thursday, September 20, 2012 5:49 PM
> Subject: Re: TeamGrumman-List: Brake Reservoir Relocated?
>
m>
>
> I worked on a Traveler that had been modified like that.
> Worked fine, but could have been better engineered.
> --Bob St= - The TeamGrumman-List Email Forum -<= Same great c
ontent also &nbs==============
====
>
>
>
>
>
>
>
==========================
=========
==========================
=========
==========================
=========
==========================
=========
>
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
You're saying that this is a shielded GROUND wire?
Haven't had a chance to look at the manual schematics to see what circuit 51PA3
is part of.
Can't imagine the need for a shielded ground (except the P-leads).
--Bob Steward
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Go to sleep, bob, day of rest and all.
Restful Woofs from the boys
Frank
850-819-1666
On Sep 22, 2012, at 11:35 PM, Bob Steward <n76lima@mindspring.com> wrote:
>
> You're saying that this is a shielded GROUND wire?
> Haven't had a chance to look at the manual schematics to see what circuit 51PA3
is part of.
> Can't imagine the need for a shielded ground (except the P-leads).
> --Bob Steward
>
>
>
>
>
Message 4
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
I found 51PA4 wire code for the ground from the battery side of the Master Switch
to the airframe ground on the 70's Tigers and Cheetahs. This is a ~6" long
segment of plain, unshielded wire with a 1/4" female spade terminal at the Master
and a #6 ring terminal on the other end that grounds to the honeycomb with
a #4 sheet metal screw.
The normal convention is that each segment in a circuit has the next # as the last
digit.
So there SHOULD be 3 previous segments in this circuit. There are not.
What does your 51PA3 connect to?
--Bob Steward
Message 5
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Gary has me stirred up over this.
N200FW canopy plastic looks very nice, if I do say so myself!
--Bob
Frank Sundram <radiohound@AOL.COM> wrote:
>
>Go to sleep, bob, day of rest and all.
>
>Restful Woofs from the boys
>
>Frank
>850-819-1666
>
>On Sep 22, 2012, at 11:35 PM, Bob Steward <n76lima@mindspring.com> wrote:
>
>>
>> You're saying that this is a shielded GROUND wire?
>> Haven't had a chance to look at the manual schematics to see what circuit 51PA3
is part of.
>> Can't imagine the need for a shielded ground (except the P-leads).
>> --Bob Steward
>>
>>
>>
>>
>>
>
>
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|