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occom
Joined: 26 Aug 2006
Posts: 404
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 Posted: Sat Jun 28, 2008 9:56 am Post subject: Alternative Pitot arrangement |
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My Model IV 1050 was originally a Denney/Skystar model using plans from ~ 1991. It shows the Pitot as an aluminum Z-bend glued to the 7th rib. That tube was broken and I bent up a replacement from stainless tube which is a little more forgiving of repeat bends. Before I finish placing this I have some time and room to change things if there is an advantage. Is there any removable or more desirable arrangement for the pitot than the original design?
Dave G.
Mod IV 1050
do not archive
[quote][b]
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Lynn Matteson
Joined: 10 Jan 2006
Posts: 2778
Location: Grass Lake, Michigan
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| Posted: Sat Jun 28, 2008 12:42 pm Post subject: Alternative Pitot arrangement |
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I didn't like the bent-tube device that came with my kit, so I bought
the L-bend, flange-mounted model from Aircraft Spruce, part #15135. I
glued a small block of wood to the side of the rib, notched to allow
the rib-cap to sit flush with it. This allowed for the flange to be
attached, with screws, onto the rib-cap after the covering is
complete. I added an inspection hole cover nearby to allow for
attaching the tubing together inside the wing after covering is
complete.
Lynn Matteson
Kitfox IV Speedster
Jabiru 2200
Status: flying w/541 hrs
On Jun 28, 2008, at 1:53 PM, Dave wrote:
| Quote: | My Model IV 1050 was originally a Denney/Skystar model using plans
from ~ 1991. It shows the Pitot as an aluminum Z-bend glued to the
7th rib. That tube was broken and I bent up a replacement from
stainless tube which is a little more forgiving of repeat bends.
Before I finish placing this I have some time and room to change
things if there is an advantage. Is there any removable or more
desirable arrangement for the pitot than the original design?
Dave G.
Mod IV 1050
do not archive
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Lynn
Kitfox IV-Jabiru 2200
N369LM |
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occom
Joined: 26 Aug 2006
Posts: 404
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| Posted: Sat Jun 28, 2008 3:06 pm Post subject: Alternative Pitot arrangement |
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That was one of the alternatives I thought of, and easy to do right now. I
also thought I might go to a straight tube probe extended through the
leading edge out near the wing tip like a friends Colt has.
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lcfitt(at)sbcglobal.net
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| Posted: Sat Jun 28, 2008 4:04 pm Post subject: Alternative Pitot arrangement |
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My only thought on this is the old mud dauber trick of filling any hole they
find with mud. I did have the tube filled once. It was real handy to just
untighten the nut and remove the lower "L" and clean it out. I can't
imagine how it could be done if the "Z" bend unit was glued in place with
the black tubing attached with the zip ties as in the manual.
Lowell
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Lynn Matteson
Joined: 10 Jan 2006
Posts: 2778
Location: Grass Lake, Michigan
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| Posted: Sat Jun 28, 2008 6:02 pm Post subject: Alternative Pitot arrangement |
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As far as the mud daubers go, I bought some of those red "Remove
before flight" streamers, that have little slip "socks" that fit over
my pitot and gas cap tubes. Good reminders, and they look cool....and
I'm a sucker for cool.
"Remove before flight" is a good reminder, but I need the back side
to read "...and install after"
Lynn Matteson
Kitfox IV Speedster
Jabiru 2200
Status: flying w/541 hrs
On Jun 28, 2008, at 7:58 PM, Lowell Fitt wrote:
[quote]
<lcfitt(at)sbcglobal.net>
My only thought on this is the old mud dauber trick of filling any
hole they find with mud. I did have the tube filled once. It was
real handy to just untighten the nut and remove the lower "L" and
clean it out. I can't imagine how it could be done if the "Z" bend
unit was glued in place with the black tubing attached with the zip
ties as in the manual.
Lowell
---
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Lynn
Kitfox IV-Jabiru 2200
N369LM |
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thesupe(at)hotmail.com
Guest
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| Posted: Sat Jun 28, 2008 7:08 pm Post subject: Alternative Pitot arrangement |
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When I saw this thread, I thought good, cause I'm about to install the pitot tube also on the Kitfox 4 and was giving it some thought also. I had thought about a double tube setup, one pitot, and one static port as some other planes have. Is that not another alternative and if not, why not? Thanks, Jim Chuk Avids, Kitfox 4 Mn
[quote] From: lynnmatt(at)jps.net
Subject: Re: Alternative Pitot arrangement
Date: Sat, 28 Jun 2008 21:58:41 -0400
To: kitfox-list(at)matronics.com
--> Kitfox-List message posted by: Lynn Matteson <lynnmatt(at)jps.net>
As far as the mud daubers go, I bought some of those red "Remove
before flight" streamers, that have little slip "socks" that fit over
my pitot and gas cap tubes. Good reminders, and they look cool....and
I'm a sucker for cool.
"Remove before flight" is a good reminder, but I need the back side
to read "...and install after"
Lynn Matteson
Kitfox IV Speedster
Jabiru 2200
Status: flying w/541 hrs
On Jun 28, 2008, at 7:58 PM, Lowell Fitt wrote:
> --> Kitfox-List message posted by: "Lowell Fitt"
> <lcfitt(at)sbcglobal.net>
>
> My only thought on this is the old mud dauber trick of filling any
> hole they find with mud. I did have the tube filled once. It was
> real handy to just untighten the nut and remove the lower "L" and
> clean it out. I can't imagine how it could be done if the "Z" bend
> unit was glued in place with the black tubing attached with the zip
> ties as in the manual.
>
> Lowell
>
> ---
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Float Flyr
Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland
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| Posted: Sat Jun 28, 2008 7:18 pm Post subject: Alternative Pitot arrangement |
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Avionics shops use nitrogen to dry out pitot and static lines. I figure disconnecting the pitot line from the ASI and running a bit of nitrogen through it would work.
Sure glad we don't have those mud daubers here. We do have flies we call "stouts" They are part of the Newfoundland air force.  and in ground to air combat they’ve never been beaten. Sometimes black flies or mosquitoes will get impacted in the pitot tubes... They are just an inconvenience though.
[img]cid:image001.jpg(at)01C8D981.8A307820[/img]
Noel Loveys
Campbellton, NL, Canada
CDN AME intern, PP-Rec
C-FINB, Kitfox III-A
582 B box, Ivo IFA, Aerocet 1100 floats
[url=noelloveys(at)yahoo.ca]noelloveys(at)yahoo.ca[/url]
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Noel Loveys
Kitfox III-A
Aerocet 1100 Floats |
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