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Pitot/Static fittings on TruTrak Digflight ll VSVG

 
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Deems Davis



Joined: 09 Jan 2006
Posts: 925

PostPosted: Fri Sep 21, 2007 5:38 pm    Post subject: Pitot/Static fittings on TruTrak Digflight ll VSVG Reply with quote

Has anyone had any difficulty with attaching pitot/static lines to the
Tru-Trak A/P?
I've got the pitot/static kit from Safeair, and it has the 'instant'
brass fittings that you screw into the various instruments and then push
the poly tubing into. The brass fittings fit into the encoder, the ADC,
the Dynon EFIS, but NOT the Tru Trak, When I attempt to screw them in
they begin to cock to one side, forcing it will result in the threads
being stripped. it appears that the holes that are tapped in what
appears to be a black plastic fitting on the rear of the Tru Trak are
slightly smaller (rough measurement w/ caliper confirms. Anybody know
what size threads these are? I checked the install manual but nothing
referenced there.

Deems Davis # 406
'Its all done....Its just not put together'
http://deemsrv10.com/


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millstees(at)ameritech.ne
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PostPosted: Fri Sep 21, 2007 5:55 pm    Post subject: Pitot/Static fittings on TruTrak Digflight ll VSVG Reply with quote

Deems:

It's normal 1/8" pipe thread. I used nylo-seal fitting, and they went right
in. And, the same fitting fit all instruments, as well as, the TT.

Good luck,

Steve Mills N750SM (reserved)
RV-10 40486 Slow-build Eggenfellner E-6T
Naperville, Illinois
Finishing kit
Do Not Archive


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rene(at)felker.com
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PostPosted: Fri Sep 21, 2007 6:01 pm    Post subject: Pitot/Static fittings on TruTrak Digflight ll VSVG Reply with quote

I had a similar problem. Once I got them started they went in easy.....to
easy for me and I ended up cracking the piece of plastic. I emailed
Tru-Trak and they told me I had to send the unit back. The fittings are
supposed to be finger tight and then a quarter turn, no more. I sent my unit
back and they replaced the plastic piece and put the fitting in for
me......I sent the fitting back with the unit and asked them to do it.
Other than my shipping cost to them, they did it for free. Only took about
10 days. Great company, great support.

Rene' Felker
N423CF
40322
801-721-6080
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jesse(at)saintaviation.co
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PostPosted: Fri Sep 21, 2007 6:44 pm    Post subject: Pitot/Static fittings on TruTrak Digflight ll VSVG Reply with quote

I have had this happen in the past. You just have to work at it a little
bit to get it straight then it goes in with out trouble. It is the same
threads as all the other instruments I have used, just a little tougher to
get started.

Do not archive

Jesse Saint
Saint Aviation, Inc.
jesse(at)saintaviation.com
www.saintaviation.com
Cell: 352-427-0285
Fax: 815-377-3694
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Deems Davis



Joined: 09 Jan 2006
Posts: 925

PostPosted: Fri Sep 21, 2007 7:24 pm    Post subject: Pitot/Static fittings on TruTrak Digflight ll VSVG Reply with quote

Thanks to All, a little careful perseverance and they are in, it just
didn't make sense that they would be a different size than the others.

Deems Davis # 406
'Its all done....Its just not put together'
http://deemsrv10.com/

Jesse Saint wrote:
Quote:


I have had this happen in the past. You just have to work at it a little
bit to get it straight then it goes in with out trouble. It is the same
threads as all the other instruments I have used, just a little tougher to
get started.




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wvu(at)ameritel.net
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PostPosted: Sat Sep 22, 2007 7:25 pm    Post subject: Pitot/Static fittings on TruTrak Digflight ll VSVG Reply with quote

Why is it called 1/8" anyway? it's not close to anything on the fitting or
the instrument itself. I think it took me 2 weeks to learn this not too
long ago.
Anh
N591VU Flying

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LarryRosen



Joined: 16 Jan 2006
Posts: 415
Location: Medford, NJ

PostPosted: Sun Sep 23, 2007 5:41 pm    Post subject: Pitot/Static fittings on TruTrak Digflight ll VSVG Reply with quote

From Wikipedia.org <http://en.wikipedia.org/wiki/Nominal_Pipe_Size>

*"Nominal Pipe Size* (NPS) is a set of standard pipe sizes used for
pressure piping in North America. ... The NPS is very loosely related
to the inside diameter in inches, but only for NPS 1/8 to NPS 12. For
NPS 14 and larger, the NPS is equal to the outside diameter (OD) in
inches. For a given NPS, the OD stays constant and the wall thickness
increases with larger SCH. For a given SCH, the OD increases with
increasing NPS while the wall thickness increases or stays constant."

Larry

DejaVu wrote:
[quote]

Why is it called 1/8" anyway? it's not close to anything on the
fitting or the instrument itself. I think it took me 2 weeks to learn
this not too long ago.
Anh
N591VU Flying

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Larry Rosen
#40356
N205EN (reserved)
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