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Richard Pike
Joined: 09 Jan 2006
Posts: 1671
Location: Blountville, Tennessee
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 Posted: Wed Dec 16, 2009 6:23 pm Post subject: FSII rebuild progress |
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Didn't do much this last week, various other aspects of life really are more important than airplanes sometimes, but got some work done yesterday and today.
These are a bit out of sequence timewise, the first one I just took a couple minutes ago, the bottom of the fuselage is now covered and shrunk.
The next picture is looking at the entrance into the boom tube with the fuselage upside down, I put a piece of 1/8" Lexan across the lower edge to keep the cables from chafing on the rivits. Drilled a hole in each end and safety wired it in place. Since it is not the original boom, there are lots of extra holes available...
Got the ground plane in for the transponder antenna, one layer of fabric under the seat and feet, and some fabric across the back side of the cage.
Transponder tray is in, since it is an experimental aircraft, it is legal to take the head off the transponder and remote the unit away from the part where you select the codes, etc. So it is now where the gas tanks would originally go, keeps it out of the way. The battery will go just ahead and to the right of it, under the package shelf.
Richard Pike
MKIII N420P (420ldPoops)
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| Description: |
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112.17 KB |
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3050 Time(s) |
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| Description: |
| Lexan chafe strip at the front of the main tube |
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73.36 KB |
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3050 Time(s) |
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| Description: |
| Ground plane for the transponder antenna |
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98.98 KB |
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3050 Time(s) |
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| Description: |
| Fuselage with rear covered, transponder tray in place |
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87.1 KB |
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3050 Time(s) |
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herbgh(at)nctc.com
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| Posted: Wed Dec 16, 2009 6:42 pm Post subject: FSII rebuild progress |
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Richard
any reason why the whole airframe cannot be the ground plane for
the radio? Herb
At 08:23 PM 12/16/2009, you wrote:
| Quote: |
Didn't do much this last week, various other aspects of life really
are more important than airplanes sometimes, but got some work done
yesterday and today.
These are a bit out of sequence timewise, the first one I just took
a couple minutes ago, the bottom of the fuselage is now covered and shrunk.
The next picture is looking at the entrance into the boom tube with
the fuselage upside down, I put a piece of 1/8" Lexan across the
lower edge to keep the cables from chafing on the rivits. Drilled a
hole in each end and safety wired it in place. Since it is not the
original boom, there are lots of extra holes available...
Got the ground plane in for the transponder antenna, one layer of
fabric under the seat and feet, and some fabric across the back side
of the cage.
Transponder tray is in, since it is an experimental aircraft, it is
legal to take the head off the transponder and remote the unit away
from the part where you select the codes, etc. So it is now where
the gas tanks would originally go, keeps it out of the way. The
battery will go just ahead and to the right of it, under the package shelf.
Richard Pike
MKIII N420P (420ldPoops)
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p 77817#277817
Attachments:
http://forums.matronics.com//files/p1150609_large_160.jpg
http://forums.matronics.com//files/p1150604_large_513.jpg
http://forums.matronics.com//files/p1150603_large_583.jpg
http://forums.matronics.com//files/p1150600_large_208.jpg
Checked by AVG - www.avg.com
12/16/09 19:52:00
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Richard Pike
Joined: 09 Jan 2006
Posts: 1671
Location: Blountville, Tennessee
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| Posted: Wed Dec 16, 2009 7:08 pm Post subject: Re: FSII rebuild progress |
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| herbgh(at)nctc.com wrote: | Richard
any reason why the whole airframe cannot be the ground plane for
the radio? Herb
|
Hi Herb, did some digging online, and as best I can tell (I used to remember, but that's gone...) you want a ground plane that radiates out from the antenna and ties into the airframe, assuming the airframe is steel. I wanted the antenna away from the gear legs, so I would have had to put something in the belly of the fuselage anyway, and those strips were available and easy to form, so it was pragmatic mostly.
Best radio reception I ever had was with an antenna mounted atop the two-piece kingpost on the Hummer. Landing wires running out to the wings, the kingpost running fore and aft, it was remarkable.
Richard Pike
MKIII N420P (420ldPoops)
| | - The Matronics Kolb-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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herbgh(at)nctc.com
Guest
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| Posted: Wed Dec 16, 2009 7:45 pm Post subject: FSII rebuild progress |
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Standard Am radio practice is to bury the ground wires in a radial
fashion out from the base of the vertical antenna..so I can
understand the landing wires(radials). contributing to the efficiency
of your radio... An SWR meter might help to improve our radio
effectivness... Herb
At 09:08 PM 12/16/2009, you wrote:
| Quote: |
herbgh(at)nctc.com wrote:
> Richard
>
> any reason why the whole airframe cannot be the ground plane for
> the radio? Herb
>
>
Hi Herb, did some digging online, and as best I can tell (I used to
remember, but that's gone...) you want a ground plane that radiates
out from the antenna and ties into the airframe, assuming the
airframe is steel. I wanted the antenna away from the gear legs, so
I would have had to put something in the belly of the fuselage
anyway, and those strips were available and easy to form, so it was
pragmatic mostly.
Best radio reception I ever had was with an antenna mounted atop the
two-piece kingpost on the Hummer. Landing wires running out to the
wings, the kingpost running fore and aft, it was remarkable.
Richard Pike
MKIII N420P (420ldPoops)
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p 77827#277827
Checked by AVG - www.avg.com
12/16/09 19:52:00
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| | - The Matronics Kolb-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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