 |
Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
|
| View previous topic :: View next topic |
| Author |
Message |
billderou(at)yahoo.com
Guest
|
 Posted: Mon May 25, 2009 4:10 pm Post subject: Adding a filter to pitot line |
 |
|
Over the years I have thought again and again about adding a filter to my pitot line to stop dust and other crap from working its way up the line and into all the instrumentation.
Theoretically, particles should not move along this path as it carries pressure not flow and is also uphill to the panel. However, if there is even a tiny leak then it becomes a flow.
I found a light weight fuel filter from NAPA (1003) with a plastic shell that lets you see any debris caught. I am confident that it would equalize the pressure in/out and not affect the instrumentation. This would be installed inside the wing aft of the pitot tube.
Any of you folks think this is a good idea or a very bad idea? Water/ice problems?
Bill DeRouchey
N939SB, flying
[quote][b]
| | - 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 |
|
|
|
| Back to top |
|
 |
Bob Turner
Joined: 03 Jan 2009
Posts: 885
Location: Castro Valley, CA
|
| Posted: Mon May 25, 2009 4:24 pm Post subject: Re: Adding a filter to pitot line |
|
|
I have never seen such a filter on a certified airplane, which suggests to me that it is either unnecessary or hazardous.
You are correct about there being no flow unless there's a leak. And if there's a leak in the line, the dirt will only flow to that point. It only goes into the ASI if the leak is internal to the instrument, in which case you'll need to get it fixed anyway. The dirt may even plug the leak!
| | - 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 |
|
_________________
Bob Turner
RV-10 QB |
|
| Back to top |
|
|
AirMike
Joined: 27 Feb 2007
Posts: 514
Location: Nevada
|
| Posted: Mon May 25, 2009 4:53 pm Post subject: Adding a filter to pitot line |
|
|
Not so sure that it is needed or helpful.
It might even induce a delay of the pressure reaching the sensors
But just to add my anecdote.
I flew for 20 years without ever covering the pitot head, then I took off in Truckee Calif one day in my C182. By the time that I waited for the A/S to come alive, I was airborne and climbing out. Fortunately I had 300+ hrs. in type and I just landed knowing the flap settings and back of the seat feel. In taking the system apart a "mud dauber" had nested in the pitot head and fully blocked the airflow. Very small but signifiucant blockage. Now I suggest always keep a cover on the pitot head.
| | - 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 |
|
_________________
See you OSH '18
Q/B - sold. |
|
| Back to top |
|
|
gengrumpy(at)aol.com
Guest
|
| Posted: Mon May 25, 2009 6:40 pm Post subject: Adding a filter to pitot line |
|
|
Don't put anything in your pitot line!!
grumpy
N184JM
On May 25, 2009, at 7:04 PM, Bill DeRouchey wrote:
| Quote: | Over the years I have thought again and again about adding a filter to my pitot line to stop dust and other crap from working its way up the line and into all the instrumentation.
Theoretically, particles should not move along this path as it carries pressure not flow and is also uphill to the panel. However, if there is even a tiny leak then it becomes a flow.
I found a light weight fuel filter from NAPA (1003) with a plastic shell that lets you see any debris caught. I am confident that it would equalize the pressure in/out and not affect the instrumentation. This would be installed inside the wing aft of the pitot tube.
Any of you folks think this is a good idea or a very bad idea? Water/ice problems?
Bill DeRouchey
N939SB, flying
| Quote: |
====================================
tp://www.matronics.com/Navigator?RV10-List
====================================
nics.com
====================================
w.matronics.com/contribution
====================================
|
|
= [quote][b]
| | - 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 |
|
|
|
| Back to top |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum
|
Powered by phpBB © 2001, 2005 phpBB Group
|
Get Email Distribution Too!
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
