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Pitot cover

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orchidman

Joined: 10 Jul 2006
Posts: 277
Location: Oklahoma City - KRCE

Posted: Sat Jul 04, 2009 7:56 am Post subject: Pitot cover

Well it is summer time and the mud dobbers finally got me.



I have the GRETZ heated pitot tube and yesterday on TO the plane was accelerating faster then the airspeed.  The plane jumped into the air at 60 KIAS.  Climb out I got to about 70.  Coming back around for a landing I was doing 50 on downwind and 0 on turn to final.    

Wonder what my miles per gallon flown was 



Took less then an hour to clean, test and flight check.



Question:  What are people using for a pitot cover?  I can make one but ACS has one for $6.95 (#15210) but I am not sure if this one will fit and if it is the best option.

_________________
Gary Blankenbiller
RV10 - # 40674
(N2GB Flying)

Tim Olson

Joined: 25 Jan 2007
Posts: 2872

Posted: Sat Jul 04, 2009 12:10 pm Post subject: Pitot cover

I just got one at one of the pilot shops.  It's just the red rubber cap, I

think 3/4", that has the "remove before flight" streamer on it.

There were 2 sizes, and I think I bought the larger one.  No

big deal.  I have the gretz too.

Tim

 	  Quote: 	
		   



 Well it is summer time and the mud dobbers finally got me.



 I have the GRETZ heated pitot tube and yesterday on TO the plane was

 accelerating faster then the airspeed.  The plane jumped into the air at

 60 KIAS.  Climb out I got to about 70.  Coming back around for a landing I

 was doing 50 on downwind and 0 on turn to final. [Shocked]

 Wonder what my miles per gallon flown was [Mr. Green]



 Took less then an hour to clean, test and flight check.



 Question:  What are people using for a pitot cover?  I can make one but

 ACS has one for $6.95 (#15210) but I am not sure if this one will fit and

 if it is the best option.



 --------

 Gary Blankenbiller

 RV10 - # 40674

 (N2GB Flying)





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p 51461#251461

AirMike

Joined: 27 Feb 2007
Posts: 514
Location: Nevada

Posted: Sat Jul 04, 2009 12:17 pm Post subject: Pitot cover

Good flying Gary. After this happens once you will NEVER fail to put a pitot cover on your plane's pitot head - even in the hanger. The Spruce item with the velcro works well. Make it a double check part of your check list, especially on the low wing aircraft. You will also learn that it is important to not just see that the A/S comes alive on the takeoff roll, but that it correlates to your approximate speed.

_________________
See you OSH '18
Q/B - sold.

gengrumpy(at)aol.com
Guest

Posted: Sat Jul 04, 2009 2:42 pm Post subject: Pitot cover

The "L" shaped one from Spruce works great and for under $10.



Never leave the pitot tube uncovered!!!



Think the surprise had you been heading off into IMC......



grumpy

N184JM



do not archive



On Jul 4, 2009, at 10:56 AM, orchidman wrote:



 	  Quote: 	
		   



 Well it is summer time and the mud dobbers finally got me.



 I have the GRETZ heated pitot tube and yesterday on TO the plane was  

 accelerating faster then the airspeed.  The plane jumped into the  

 air at 60 KIAS.  Climb out I got to about 70.  Coming back around  

 for a landing I was doing 50 on downwind and 0 on turn to final.  

 [Shocked]

 Wonder what my miles per gallon flown was [Mr. Green]



 Took less then an hour to clean, test and flight check.



 Question:  What are people using for a pitot cover?  I can make one  

 but ACS has one for $6.95 (#15210) but I am not sure if this one  

 will fit and if it is the best option.



 --------

 Gary Blankenbiller

 RV10 - # 40674

 (N2GB Flying)





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p 51461#251461

orchidman

Joined: 10 Jul 2006
Posts: 277
Location: Oklahoma City - KRCE

Posted: Sat Jul 04, 2009 8:19 pm Post subject: Re: Pitot cover

 	  gengrumpy(at)aol.com wrote: 	
		  The "L" shaped one from Spruce works great and for under $10.



Never leave the pitot tube uncovered!!!



Think the surprise had you been heading off into IMC......



grumpy

N184JM

	


I knew I would need a cover but put off getting one.  Right now I have some of the blue painters tape keeping the little guys out with a tail hanging about to the floor.  Monday, I will order the larger of the 2 sizes.  

Thanks.



Before my first flight there were several of the 'airport bums'    asking when was I going to do my high speed taxing and I would reply back Van's thoughts about not doing them.  This plane accelerates so fast that I cross check the engine instruments while watching outside until almost rotate speed and then check the airspeed indicator.  It was low but not that low so I did what the plane told me it wanted to do.  I felt safer flying the plane then trying to do a high speed abort on the runway.

With my past training and the flying of my -10, I feel comfortable flying the plane by the seat of my pants, sounds and visual cues.



For new pilots, I sure hope that your flight instructors give you good training on partial panel, including full loss of airspeed.  You never know when it will be used.



Mine went up to about 70 KIAS and then did a genital decrease to zero.

The comment about if I was in the soup, well I would fly the plane first and then later on, with my 496, bring up the instrument screen.  It has a GPS airspeed which would give you something in the ball park.  Combine that with the winds for the airport and you should be within 10 knots, more then safe for lowering flaps and starting an approach.



This is a great plane !!!!

_________________
Gary Blankenbiller
RV10 - # 40674
(N2GB Flying)

dmaib@me.com

Joined: 25 Apr 2006
Posts: 454
Location: New Smyrna Beach, Florida

Posted: Sun Jul 05, 2009 4:44 am Post subject: Pitot cover

Tell us more about that decrease to zero part! 



David Maib



do not archive





On Jul 5, 2009, at 12:19 AM, orchidman wrote:




gengrumpy(at)aol.com wrote:

 	  Quote: 	
		   The "L" shaped one from Spruce works great and for under $10.



 Never leave the pitot tube uncovered!!!



 Think the surprise had you been heading off into IMC......



 grumpy

 N184JM




	


I knew I would need a cover but put off getting one.  Right now I  

have some of the blue painters tape keeping the little guys out with  

a tail hanging about to the floor.  Monday, I will order the larger  

of the 2 sizes.

Thanks.



Before my first flight there were several of the 'airport  

bums' [Wink]   asking when was I going to do my high speed taxing and  

I would reply back Van's thoughts about not doing them.  This plane  

accelerates so fast that I cross check the engine instruments while  

watching outside until almost rotate speed and then check the  

airspeed indicator.  It was low but not that low so I did what the  

plane told me it wanted to do.  I felt safer flying the plane then  

trying to do a high speed abort on the runway.

With my past training and the flying of my -10, I feel comfortable  

flying the plane by the seat of my pants, sounds and visual cues.



For new pilots, I sure hope that your flight instructors give you  

good training on partial panel, including full loss of airspeed.  You  

never know when it will be used.



Mine went up to about 70 KIAS and then did a genital decrease to zero.

The comment about if I was in the soup, well I would fly the plane  

first and then later on, with my 496, bring up the instrument  

screen.  It has a GPS airspeed which would give you something in the  

ball park.  Combine that with the winds for the airport and you  

should be within 10 knots, more then safe for lowering flaps and  

starting an approach.



This is a great plane !!!!



--------

Gary Blankenbiller

RV10 - # 40674

(N2GB Flying)





Read this topic online here:



http://forums.matronics.com/viewtopic.php?p 51547#251547

_________________
David Maib
RV-10 #40559
New Smyrna Beach, FL

orchidman

Joined: 10 Jul 2006
Posts: 277
Location: Oklahoma City - KRCE

Posted: Sun Jul 05, 2009 6:41 am Post subject: Re: Pitot cover

 	  dmaib(at)mac.com wrote: 	
		  Tell us more about that decrease to zero part! 



David Maib 	


Not a whole lot to tell.  It looked like it plugged solid some where around rotate and then bled off to nothing in the following minutes.

After rotate, I knew I had an unreliable airspeed so by and large, it was excluded from my cross-check.  And to top it off, I had a 'low-n-slow' plane in front of me doing a full stop so I had to extend to allow him to clear the runway.  It took some time to fly the pattern but I was in no rush.

Overall I felt it was no big deal but did require 110% attention and concentration.  Another good reason to make sure you get the best training possible.  Alex, if you are listening, another thumbs up to the transition training.

_________________
Gary Blankenbiller
RV10 - # 40674
(N2GB Flying)

gengrumpy(at)aol.com
Guest

Posted: Sun Jul 05, 2009 7:19 am Post subject: Pitot cover

Another great reason to have AOA - totally independent of the pitot  

static system!!

grumpy

N184JM

On Jul 5, 2009, at 9:41 AM, orchidman wrote:

 	  Quote: 	

 dmaib(at)mac.com wrote:

> Tell us more about that decrease to zero part! 

>

> David Maib

 Not a whole lot to tell.  It looked like it plugged solid some where  

 around rotate and then bled off to nothing in the following minutes.

 After rotate, I knew I had an unreliable airspeed so by and large,  

 it was excluded from my cross-check.  And to top it off, I had a  

 'low-n-slow' plane in front of me doing a full stop so I had to  

 extend to allow him to clear the runway.  It took some time to fly  

 the pattern but I was in no rush.

 Overall I felt it was no big deal but did require 110% attention and  

 concentration.  Another good reason to make sure you get the best  

 training possible.  Alex, if you are listening, another thumbs up to  

 the transition training.

 --------

 Gary Blankenbiller

 RV10 - # 40674

 (N2GB Flying)

 Read this topic online here:

 http://forums.matronics.com/viewtopic.php?p 51580#251580

dlm46007(at)cox.net
Guest

Posted: Sun Jul 05, 2009 8:21 am Post subject: Pitot cover

Had a pitot ice in IMC. Noticed gradual decrease in airspeed. Light bulb in

head came on and upon application of pitot heat the airspeed went from 0-140

in a few milliseconds. 



--

dlm46007(at)cox.net
Guest

Posted: Sun Jul 05, 2009 8:39 am Post subject: Pitot cover

Think; if the pitot ices at altitude and you are descending, airspeed can

decrease as low pressure in the iced  pitot is contrasted with higher static

pressure at lower altitude. Opposite is also true. B-727 going to BUF to

pick Buffalo Bills football team out of LGA. Crew failed to turn on pitot

heats for all three pitot tubes and they iced in a climb. Higher pressure

air from lower altitudes was trapped in the pitot lines. As the altitude

rapidly increased because the aircraft was light, The airspeed appeared to

keep increasing because static pressure was decreasing. Instead of cross

checking other instruments, they saw airspeed over speed and continued to

pull back the yoke. When the aircraft finally stalled the FDR indicated that

the pitch angle was 30 degrees up. The crew fixated on the airspeed and

stalled the aircraft about FL250. It took about a minute to hit the ground. 

--

pitts_pilot(at)bellsouth.
Guest

Posted: Sun Jul 05, 2009 10:25 am Post subject: Pitot cover

The cheapest and most available thing is a pipe cleaner.  Bend it in the 

shape of a tall cowboy hat with the brim turned up.  slip the long end 

in the pitot tube.  Also works to keep critters out of the gas tank 

vents.  You can leave them in with exception of pitot tube if you have 

even an inkling of using pitot heat.  Also won't work on pitots with 

tiny holes.

Linn

orchidman wrote:

 	  Quote: 	

 gengrumpy(at)aol.com wrote:

> The "L" shaped one from Spruce works great and for under $10.

>

> Never leave the pitot tube uncovered!!!

>

> Think the surprise had you been heading off into IMC......

>

> grumpy

> N184JM

>

 I knew I would need a cover but put off getting one.  Right now I have some of the blue painters tape keeping the little guys out with a tail hanging about to the floor.  Monday, I will order the larger of the 2 sizes.  

 Thanks.

 Before my first flight there were several of the 'airport bums' [Wink]   asking when was I going to do my high speed taxing and I would reply back Van's thoughts about not doing them.  This plane accelerates so fast that I cross check the engine instruments while watching outside until almost rotate speed and then check the airspeed indicator.  It was low but not that low so I did what the plane told me it wanted to do.  I felt safer flying the plane then trying to do a high speed abort on the runway.

 With my past training and the flying of my -10, I feel comfortable flying the plane by the seat of my pants, sounds and visual cues.

 For new pilots, I sure hope that your flight instructors give you good training on partial panel, including full loss of airspeed.  You never know when it will be used.

 Mine went up to about 70 KIAS and then did a genital decrease to zero.

 The comment about if I was in the soup, well I would fly the plane first and then later on, with my 496, bring up the instrument screen.  It has a GPS airspeed which would give you something in the ball park.  Combine that with the winds for the airport and you should be within 10 knots, more then safe for lowering flaps and starting an approach.

 This is a great plane !!!!

 --------

 Gary Blankenbiller

 RV10 - # 40674

 (N2GB Flying)

 Read this topic online here:

 http://forums.matronics.com/viewtopic.php?p 51547#251547

Jim Berry

Joined: 10 Jan 2006
Posts: 237
Location: Denver

Posted: Sun Jul 05, 2009 1:20 pm Post subject: Re: Pitot cover

Orchidman wrote "Mine went up to about 70 KIAS and then did a genital decrease to zero."



Over the years I have seen a lot of guys in the office whose genitals suffered a decrease, but I never knew it could affect their airspeed.



Jim Berry

40482

N15JB

Strasnuts

Joined: 10 Feb 2009
Posts: 502
Location: Salt Lake City, UT

Posted: Sun Jul 05, 2009 1:32 pm Post subject: Re: Pitot cover

I know some severe cases of genital decrease is caused by acute pucker factor.

_________________
40936
RV-10 SB N801VR Flying
780 Hours
SuperSTOL 60 hours

Strasnuts

Joined: 10 Feb 2009
Posts: 502
Location: Salt Lake City, UT

Posted: Sun Jul 05, 2009 1:59 pm Post subject: Re: Pitot cover

http://www.aopa.org/asf/epilot_acc/mia04la070.html?WT.mc_id=090703epilot&WT.mc_sect=sap



This is a story of a Cirrus that was washed with tap water and had contamination in the pitot system.  he had erratic gauges then deployed his parachute.  He forgot to use the alternate static source which would have worked.  The NTSB hinted that the cause was flouride in the tap water.

_________________
40936
RV-10 SB N801VR Flying
780 Hours
SuperSTOL 60 hours

orchidman

Joined: 10 Jul 2006
Posts: 277
Location: Oklahoma City - KRCE

Posted: Sun Jul 05, 2009 2:08 pm Post subject: Re: Pitot cover

 	  Jim Berry wrote: 	
		  Orchidman wrote "Mine went up to about 70 KIAS and then did a genital decrease to zero."



Over the years I have seen a lot of guys in the office whose genitals suffered a decrease, but I never knew it could affect their airspeed.



Jim Berry

40482

N15JB 	




Isn't spell check great     but you have to hit the right option also.

_________________
Gary Blankenbiller
RV10 - # 40674
(N2GB Flying)

doctornigel

Joined: 18 Feb 2009
Posts: 11
Location: Indian Harbour Beach, FL

Posted: Sun Jul 05, 2009 3:39 pm Post subject: Re: Pitot cover

The NTSB wasn't hinting at fluoride being the cause, but that the water's source was from tap water and not condensation or rain. However here is proof of fluoride's general danger.

flouridevscommunism.jpg

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