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Terry Watson
Joined: 09 Jan 2006
Posts: 290
Location: Seattle, WA USA
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 Posted: Wed Jun 21, 2006 9:20 am Post subject: Lighspeed location |
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After receiving comments from Ed, Rick, Charlie and others, I moved my
Lightspeed ignition control box to behind the firewall. I think the idea of
mounting it on the outside skin which would serve as a heat sink is
excellent, but I didn't go that far - just put it in the forward luggage
compartment of my RV-8A. This is much better than where I had it, and not
as difficult as I had expected. Thanks, guys.
But now I decided to put my two GPS antennas in front of the firewall. I
intend to run the coax through the same firewall penetration as the coax
between the Lightspeed box and the ignition coils. Is this going to cause
any problems with the GPS?
Terry
Terry,
You might want to check with Klaus about that Lightspeed box, firewall
forward. I'm pretty sure he still recommends them aft. Ours, an early Plasma
I unit, requires air from a cooling fan and makes quite a bit of its own
heat. He recommended that we have him check it out because a transformer
tended to overheat on the early ones. He replaced ours (with the type he's
using nowadays) and returned our old transformer to us. It was kinda
blackened and didn't look too good. This was with just short of 700 hours.
We put in a bigger avionics fan and enlarged the air vent to keep it cooler.
YMMV
Pax,
Ed Holyoke
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LessDragProd(at)aol.com
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| Posted: Wed Jun 21, 2006 1:21 pm Post subject: Lighspeed location |
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by itself.
Regards,
Jim Ayers
PS Opinions may vary.
In a message dated 06/21/2006 10:24:01 AM Pacific Daylight Time,
terry(at)tcwatson.com writes:
After receiving comments from Ed, Rick, Charlie and others, I moved my
Lightspeed ignition control box to behind the firewall. I think the idea of
mounting it on the outside skin which would serve as a heat sink is
excellent, but I didn't go that far - just put it in the forward luggage
compartment of my RV-8A. This is much better than where I had it, and not
as difficult as I had expected. Thanks, guys.
But now I decided to put my two GPS antennas in front of the firewall. I
intend to run the coax through the same firewall penetration as the coax
between the Lightspeed box and the ignition coils. Is this going to cause
any problems with the GPS?
Terry
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bicyclop(at)pacbell.net
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| Posted: Wed Jun 21, 2006 4:22 pm Post subject: Lighspeed location |
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I think it'll be OK. The ignition coax is shielded and so's the GPS
coax.
Pax,
Ed Holyoke
--
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