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orchidman
Joined: 10 Jul 2006 Posts: 277 Location: Oklahoma City - KRCE
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Tim Olson
Joined: 25 Jan 2007 Posts: 2872
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Posted: Sat Jul 04, 2009 12:10 pm Post subject: Pitot cover |
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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
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AirMike
Joined: 27 Feb 2007 Posts: 514 Location: Nevada
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Posted: Sat Jul 04, 2009 12:17 pm Post subject: Pitot cover |
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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.
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_________________ See you OSH '18
Q/B - sold. |
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gengrumpy(at)aol.com Guest
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Posted: Sat Jul 04, 2009 2:42 pm Post subject: Pitot cover |
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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
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orchidman
Joined: 10 Jul 2006 Posts: 277 Location: Oklahoma City - KRCE
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Posted: Sat Jul 04, 2009 8:19 pm Post subject: Re: Pitot cover |
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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
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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 !!!!
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_________________ Gary Blankenbiller
RV10 - # 40674
(N2GB Flying) |
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dmaib@me.com
Joined: 25 Apr 2006 Posts: 454 Location: New Smyrna Beach, Florida
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Posted: Sun Jul 05, 2009 4:44 am Post subject: Pitot cover |
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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
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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
| - The Matronics RV10-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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_________________ David Maib
RV-10 #40559
New Smyrna Beach, FL |
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orchidman
Joined: 10 Jul 2006 Posts: 277 Location: Oklahoma City - KRCE
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Posted: Sun Jul 05, 2009 6:41 am Post subject: Re: Pitot cover |
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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.
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_________________ Gary Blankenbiller
RV10 - # 40674
(N2GB Flying) |
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gengrumpy(at)aol.com Guest
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Posted: Sun Jul 05, 2009 7:19 am Post subject: Pitot cover |
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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
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dlm46007(at)cox.net Guest
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Posted: Sun Jul 05, 2009 8:21 am Post subject: Pitot cover |
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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.
--
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dlm46007(at)cox.net Guest
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Posted: Sun Jul 05, 2009 8:39 am Post subject: Pitot cover |
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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.
--
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pitts_pilot(at)bellsouth. Guest
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Posted: Sun Jul 05, 2009 10:25 am Post subject: Pitot cover |
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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
|
| - The Matronics RV10-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:
http://www.matronics.com/Navigator?RV10-List |
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Jim Berry
Joined: 10 Jan 2006 Posts: 237 Location: Denver
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Posted: Sun Jul 05, 2009 1:20 pm Post subject: Re: Pitot cover |
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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
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Strasnuts
Joined: 10 Feb 2009 Posts: 502 Location: Salt Lake City, UT
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Posted: Sun Jul 05, 2009 1:32 pm Post subject: Re: Pitot cover |
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I know some severe cases of genital decrease is caused by acute pucker factor.
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_________________ 40936
RV-10 SB N801VR Flying
780 Hours
SuperSTOL 60 hours |
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Strasnuts
Joined: 10 Feb 2009 Posts: 502 Location: Salt Lake City, UT
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Posted: Sun Jul 05, 2009 1:59 pm Post subject: Re: Pitot cover |
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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.
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_________________ 40936
RV-10 SB N801VR Flying
780 Hours
SuperSTOL 60 hours |
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orchidman
Joined: 10 Jul 2006 Posts: 277 Location: Oklahoma City - KRCE
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doctornigel
Joined: 18 Feb 2009 Posts: 11 Location: Indian Harbour Beach, FL
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Posted: Sun Jul 05, 2009 3:39 pm Post subject: Re: Pitot cover |
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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.
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