Today's Message Index:
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1. 06:21 AM - Re: Magnetism (Bobby Paulk)
2. 09:57 PM - was "Contactor Questions" now battery in the trunk (Bob Verwey)
Message 1
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When we were building two airplanes in a large hangar my rudder cables got relocated
to a DC welding machine where they laid for several days while the welder
was used several times. I located my remote compass to the rear bottom of the
fuselage ( right between the galvanized rudder cables ). When trying to calibrate
the compass it would swing wildly when moving the rudder even slightly.
We tried degauzing with a solder gun and even found an old TV degauzing ring to
no avail. Finally moved the compass up high above the baggage compartment and
it worked fine.
Message 2
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| Subject: | was "Contactor Questions" now battery in the trunk |
This is kinda related to contactors...
On the BD4 that I am rebuilding, the battery is behind the baggage
compartment, with a really fat wire running up to the firewall.
IO 470 engine so lots of amps required for start.
Is there a recommended contactor placement/battery disconnect protocol out
there?
I'm thinking safety in the event of an incident which might short out the
fat wire to the fuselage.
My setup is very rudimentary (steam 8 pack), conventional engine gauges,
perhaps a mini EFIS.
I did try the Forum search but struggled a little....
Best Regards,
Bob Verwey
082 331 2727
On Fri, 14 May 2021 at 05:46, A Lumley <andrew.lumley@sympatico.ca> wrote:
> andrew.lumley@sympatico.ca>
>
> Thanks to you both for the quick feedback. I'll include the jumper from
> the contactor "I" terminal to the starter with the extra diode.
>
> You are correct that B&C no longer sells the crowbar module so I was going
> to build my own from your crowbar schematics.
>
> Thanks again, I'm sure I'll have lots more questions...
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=501914#501914
>
>
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