Today's Message Index:
----------------------
1. 06:49 AM - Rotax 914 (Fergus Kyle)
2. 08:13 AM - Re: Rotax 914 (m.grass@comcast.net)
3. 08:13 AM - Re: Rotax 914 (m.grass@comcast.net)
4. 08:20 PM - Re: Rotax 914 (Noel Loveys)
Message 1
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Hello,
I am assembling the wiring for the above model engine. In the
process, I wired the dynamo module wires to coaxial cable which runs to the
ignition switches, ensuring that the coax braid is exclusively connected to
nearby engine ground at one end and one pole of each switch at the other.
The switches are enclosed in small alum boxes attached to the panel for
interference protection.
I see, by Installation manual, page 75 [electric circuit, d/1996 05
10] that there seems to be an electrical ground connection to the switch
frame and thus to the metal panel on which it is fixed. If that is so, then
the engine frame ground extends into the cockpit via the coax.
Is this the intent?
What is its purpose, please?
Ferg
Europa A064
Message 2
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Q
Sent via BlackBerry by AT&T
-----Original Message-----
From: "Fergus Kyle" <VE3LVO@rac.ca>
Subject: RotaxEngines-List: Rotax 914
This is a multi-part message in MIME format.
Message 3
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Q
Sent via BlackBerry by AT&T
-----Original Message-----
From: "Fergus Kyle" <VE3LVO@rac.ca>
Subject: RotaxEngines-List: Rotax 914
This is a multi-part message in MIME format.
Message 4
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The ground on the shield is to prevent the P-leads from interfering with
your radios.. When you ground these leads they turn off (short out) the
magnetos so the engine will stop. Generally, coax should only be grounded
at one end, the engine end. Grounding at both ends makes the coax an
inductive emitter if the signal is high enough on the centre lead.
When you wire your plane be sure to have a good hefty braid (ground) going
from the engine block across the lord mounts to a sturdy place on the frame.
Doing that will lower the possibility of radio interference and it will
ensure you get lots of cranking amps to your starter too.
Noel
_____________________________________________
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of Fergus
Kyle
Sent: Thursday, September 18, 2008 11:18 AM
Subject: RotaxEngines-List: Rotax 914
Hello,
I am assembling the wiring for the above model engine. In the
process, I wired the dynamo module wires to coaxial cable which runs to the
ignition switches, ensuring that the coax braid is exclusively connected to
nearby engine ground at one end and one pole of each switch at the other.
The switches are enclosed in small alum boxes attached to the panel for
interference protection.
I see, by Installation manual, page 75 [electric circuit, d/1996 05
10] that there seems to be an electrical ground connection to the switch
frame and thus to the metal panel on which it is fixed. If that is so, then
the engine frame ground extends into the cockpit via the coax.
Is this the intent?
What is its purpose, please?
Ferg
Europa A064
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