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pj.ladd(at)btinternet.com
Guest

Posted: Mon Jun 15, 2009 12:55 am Post subject: ASI

Having wiped off the pitot tube twice from my Xtra  by getting into long grass etc I replaced it on top of the nose cone. Just far  enough back so that it wouldn`t get wiped off  by someone walking  by.

  

 Flew last night and found the ASI reading about  10/15mph slow. 2800 rpm produced only about 50 mph instead of around 65.  Did a couple of stalls at 2000ft to get some sort of idea and landed OK by  guess and by God with the ASI hovering just below 30mph.

  

 Anyone put their pitots in a different position who  can guide me to a good spot for refitting?  

  

 Pat 

   [quote][b]

vince(at)devonwindmills.c
Guest

Posted: Mon Jun 15, 2009 1:13 am Post subject: ASI

Try halfway along the wing strut, sticking forward  as much as you dar

 Vince Hallam

Devon Windmill Holidays

Woodlands, Walls Hill  Road

Torquay, Devon, TQ1 3LZ

Tel: 01803 316191   Mob: 07941  313141

www.devonwindmills.co.uk

 [quote]   ---

pj.ladd(at)btinternet.com
Guest

Posted: Mon Jun 15, 2009 1:25 am Post subject: ASI

Try halfway along the wing  strut>>

  

 Thanks Vince. A quick reply like that had to  be  aBrit. There is no one else about at this time in the  morning.

  

 Is that just a suggestion or have you tried  it?   Strikes me as a bit vulnerable unless you get close to the wing  and then there is the disturbed air. Also the derigging problem, not that I  derig mine but someone will, one day

  

 Pat 

   [quote][b]

vince(at)devonwindmills.c
Guest

Posted: Mon Jun 15, 2009 1:52 am Post subject: ASI

PJ,

              Give me a ring , I`ll discuss. Im home now

 Vince Hallam

Devon Windmill Holidays

Woodlands, Walls Hill  Road

Torquay, Devon, TQ1 3LZ

Tel: 01803 316191   Mob: 07941  313141

www.devonwindmills.co.uk

 [quote]   ---

jbhart(at)onlyinternet.ne
Guest

Posted: Mon Jun 15, 2009 3:12 am Post subject: ASI

Pat,



Here is my solution.



http://www.jackbhart.com/firefly/firefly36.html



Jack B. Hart FF004

Winchester, In

----------------------------

From: "pj.ladd" <pj.ladd(at)btinternet.com>

  

Anyone put their pitots in a different position who can guide me to a good 

spot for refitting?

John Hauck

Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)

Posted: Mon Jun 15, 2009 4:23 am Post subject: ASI

My pitot/static system works great mounted to the  bottom of the right lift strut approximately 6 to 12 inches from the outboard  end.

  

 john h

 mkIII

  

  

 [quote]    Is that just a suggestion or have you tried    it?   Strikes me as a bit vulnerable unless you get close to the    wing and then there is the disturbed air. Also the derigging problem, not that    I derig mine but someone will, one day

    

   Pat 

[b]

_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama

vince(at)devonwindmills.c
Guest

Posted: Mon Jun 15, 2009 5:20 am Post subject: ASI

Hey PJ,

              I lost your phone no,Call again when you`re  free.

 Vince Hallam

Devon Windmill Holidays

Woodlands, Walls Hill  Road

Torquay, Devon, TQ1 3LZ

Tel: 01803 316191   Mob: 07941  313141

www.devonwindmills.co.uk

 [quote]   ---

robcannon

Joined: 22 Jun 2008
Posts: 39
Location: British Columbia

Posted: Mon Jun 15, 2009 7:29 am Post subject: Re: ASI

I have my pitot on top of the nose and it is accurate (gps checked). If I was doing it again I would try it an inch or so further back as it sometimes gets bent when it's in my crowded hanger.

cheers, Rob Cannon

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robcannon

Joined: 22 Jun 2008
Posts: 39
Location: British Columbia

Posted: Mon Jun 15, 2009 7:31 am Post subject: Re: ASI

Can anyone tell me how to shrink photos when I attach them to emails. I use a canon powershot A75.

Rob Cannon

George Alexander

Joined: 10 Jan 2006
Posts: 245
Location: SW Florida

Posted: Mon Jun 15, 2009 9:40 am Post subject: ASI

Rob:

If you are using Windows XP, go to:



http://www.microsoft.com/windowsxp/using/digitalphotography/learnmore/tips/e

schelman2.mspx.



Easy, free, tool for doing what you want.  Adjusts the size, but leaves the

original intact (in case you want decent quality prints).



Fun, Safe Flying!



George Alexander

http://gtalexander.home.att.net



 DO NOT ARCHIVE



--

_________________
George Alexander
FS II R503
E-LSA N709FS
http://www.oh2fly.net

herbgh(at)nctc.com
Guest

Posted: Mon Jun 15, 2009 12:12 pm Post subject: ASI

Free download called...irfanview....very easy to use...lots of choices ...Herb



http://www.irfanview.com/

At 12:39 PM 6/15/2009, you wrote:

[quote]

<gtalexander(at)att.net>



Rob:

If you are using Windows XP, go to:



http://www.microsoft.com/windowsxp/using/digitalphotography/learnmore/tips/e

schelman2.mspx.



Easy, free, tool for doing what you want.  Adjusts the size, but leaves the

original intact (in case you want decent quality prints).



Fun, Safe Flying!



George Alexander

http://gtalexander.home.att.net



  DO NOT ARCHIVE



--

pj.ladd(at)btinternet.com
Guest

Posted: Tue Jun 16, 2009 1:55 am Post subject: ASI

John,

 thanks for the gen.

  

 I assume that you just have a couple of straight  tubes  projecting from the front of the strut.

  

 Questions.  How long have you made  them.?

                     Have you run the plastic tube internally or just run it up the  strut?

                      How have you fixed the assembly to the strut?

  

 My thought is to bend the metal tubes through 90  degrees with the leg attached to the plastic tube bound to the strut with a  couple of cable ties.

  

 Pat

   [quote][b]

aslsa.rng(at)gmail.com
Guest

Posted: Tue Jun 16, 2009 3:08 am Post subject: ASI

Pat, There's another option you might wish to try that I use on my Mk III and my trike. Both a short section of stiff vinyl tube to connect the short pitot sticking out of the fuselage to an extension that gets it out about 8" into the airstream. If I or someone else hits it it just bends out of the way and then comes back into line when the offending party, usually some cow at a Fly In, removes her haunch. Cheap to try and probably saves you from having to call out the engineering battalion. 



Rick



On Tue, Jun 16, 2009 at 4:54 AM, pj.ladd <pj.ladd(at)btinternet.com (pj.ladd(at)btinternet.com)> wrote:

[quote]        John,

 thanks for the gen.

  

 I assume that you just have a couple of straight  tubes  projecting from the front of the strut.

  

 Questions.  How long have you made  them.?

                     Have you run the plastic tube internally or just run it up the  strut?

                      How have you fixed the assembly to the strut?

  

 My thought is to bend the metal tubes through 90  degrees with the leg attached to the plastic tube bound to the strut with a  couple of cable ties.

  

 Pat

    	  Quote: 	
		  



get="_blank">http://www.matronics.com/Navigator?Kolb-List

tp://forums.matronics.com

_blank">http://www.matronics.com/contribution



	


[b]

John Hauck

Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)

Posted: Tue Jun 16, 2009 5:41 am Post subject: ASI

Actually, I found a PT-17 pitot/static system when  I was building my mkIII, and installed it to the strut using 4 pop  rivets.

  

 Ran the tubing through the lift strut.

  

 It is a single tube aproximately 5" long that  incorporates both pitot and static pressure systems.

  

 john h

 mkIII

  

  

 [quote]    

   I assume that you just have a couple of straight    tubes  projecting from the front of the strut.

    

   My thought is to bend the metal tubes through 90    degrees with the leg attached to the plastic tube bound to the strut with    a couple of cable ties.

    

   Pat

 	  Quote: 	
		   	
[b]

_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama

pj.ladd(at)btinternet.com
Guest

Posted: Wed Jun 17, 2009 2:40 am Post subject: ASI

It is a single tube aproximately 5" long that  incorporates both pitot and static pressure systems.>.

  

 Thanks John,  that sounds pretty neat with  only a single tube.I have never heard of that. Does that mean it measures  pitot pressure only and you use cockpit static?.

  

 Incidentally I saw a couple of PT 17`s at a local  airshow recently. Not many about over here.

  

 Pat

 



   [quote][b]

pj.ladd(at)btinternet.com
Guest

Posted: Wed Jun 17, 2009 2:46 am Post subject: ASI

Cheap to try and probably saves you from  having to call out the engineering battalion.>>

  

 Thanks Rick.  A neat solution and may put the  end of the pitot into clear air.

  

 Cheers

  

 Pat

 



   [quote][b]

John Hauck

Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)

Posted: Wed Jun 17, 2009 4:58 am Post subject: ASI

Patrick:

  

 I say again, the single tube incorporates both  pitot and static pressure systems.  Too complicated for me to try and  explain how it is designed before I have my first cup of coffee.

  

 john h

 mkIII

  

  

 [quote]    



   It is a single tube aproximately 5" long that    incorporates both pitot and static pressure systems.>.

    

   Thanks John,  that sounds pretty neat with    only a single tube.I have never heard of that. Does that mean it measures    pitot pressure only and you use cockpit static?.

    

   Pat

    

[b]

_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama

williamtsullivan(at)att.n
Guest

Posted: Wed Jun 17, 2009 5:38 am Post subject: ASI

Pat- Aircraft Spruce lists a couple of the single tube designs, plus a couple of the double tube designs.  Listed under "Instruments".  Page 394 in my catalog.  I don't know which one John has.  They list one for under $20 (US), and go up to almost $180.

  

                                                  Bill Sullivan

                                                  Windsor Locks, Ct.

 [quote][b]

aslsa.rng(at)gmail.com
Guest

Posted: Wed Jun 17, 2009 5:39 am Post subject: ASI

Perhaps this drawing would help.



Rick



On Wed, Jun 17, 2009 at 7:57 AM, John Hauck <jhauck(at)elmore.rr.com (jhauck(at)elmore.rr.com)> wrote:

  	  Quote: 	
		         Patrick:

  

 I say again, the single tube incorporates both  pitot and static pressure systems.  Too complicated for me to try and  explain how it is designed before I have my first cup of coffee.

  

 john h

 mkIII

  

  

  	  Quote: 	
		      



   It is a single tube aproximately 5" long that    incorporates both pitot and static pressure systems.>.

    

   Thanks John,  that sounds pretty neat with    only a single tube.I have never heard of that. Does that mean it measures    pitot pressure only and you use cockpit static?.

    

   Pat

    





get="_blank">http://www.matronics.com/Navigator?Kolb-List

tp://forums.matronics.com

_blank">http://www.matronics.com/contribution

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John Hauck

Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)

Posted: Wed Jun 17, 2009 6:18 am Post subject: ASI

Thanks, Rick.

  

  The single tube pitot/static system at the  bottom of the file is a good example.

  

 My system was manufactured by Kollsman Instruments  during WWII.  It was still in its original wrapping with cosmoline.   Has a Federal Stock Number on it.  Think I got it from WagAero for about  $12.00.  Made of nickle plated brass.

  

 john h

 mkIII 

 [quote]Perhaps    this drawing would help.   



   Rick



    



[b]

_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama

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