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Date: Sun, 25 Apr 1999 17:27:14 -0700
From: Brent Regan <brent@regandesigns.com>
To: lancair.list@olsusa.com
Subject: Wiring questions answered
References: <19990425042523.AAA8968@truman.olsusa.com>
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          <<  Lancair Builders' Mail List  >>
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>>
>
> <<Do you or your LNN readers have a source/reference for study on electrical
> bonding of components on the Lancair IV planes? We start wing closeout for
> the first plane in May and have neglected this area in our research.>>

Instrument Specialties has copper foil tape (1.00 x .001) with a conductive
adhesive (check the archive for phone and PN). Just sand the carbon, MC 
and apply. You can even solder a wire to the tape if needed. Survey the plane
with an ohm meter to see where you need additional conductance.

> 1.  COM1 is going in the vert stab.  Where have people placed their COM2
> in the IV?  I THINK I'd like a dedicated COM2 and, of course, I'd like
> it internal :)

Dream on. A bent belly wire seems to be the best COM1 with the V-stab
antenna a close second.

>
>
> 2.  What's the scoop on Glide Slope antennas.  Have y'all used a
> splitter on one of the wingtip VOR antennas or what?

Slpitter works good:)

>
>
> 3.  Any inputs on an internal transponder antenna?  My plan was to only
> have one VOR (and hopefully GS) antenna in one wingtip and place the
> transponder in the other.  Any thoughts?

Might work, you can always put in a shark fin if you have persistent
stealth mode.

>
>
> As an added point of conversation, I was thinking about using copper
> pipe (in place of the factory plastic tube) as my wing electrical
> conduit.  My plan is to use this as my electrical ground to the
> wingtip.  Again, any thoughts?
>

Sounds noisy. Running the COM coaxes inside the strobe ground can't be
the best first approach.  Also sounds heavy.  Be a little less clever
and use shielded twisted pair for power to wingtip devices.

Brent Regan
LIV-P 530TT

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