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John Bickham
Joined: 10 Jan 2006
Posts: 170
Location: St. Francisville, LA
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 Posted: Sun Apr 05, 2009 9:16 am Post subject: Any suggestions for sticking altimeter? |
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Hello folks,
Was wondering if anyone has any suggestions for a sticking altimeter? I know the obvious suggestion is buy a new one. Probably will do that. It is sticking around 500 ft. That is kinda where I spend a lot of time. Must have wore the mechanism out there. It will come unstuck with a few taps or with enough gain in altitude.
We stay in a very humid and wet environment. I think the guts have rusted or something.
Just wondering if there are I tricks out there for this?
Looking at AS&S for new altimeter. Trying to work on squawk list for MV. Yesterday, flew 2.3 hours with 9 cross wind landings (15 knots) to build up my wind threshold for the trip out west. Trying to get ready.
Appreciate any help or suggestions. Stay safe.
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Thanks too much,
John Bickham
Mark III-C w/ 912UL
St. Francisville, LA
I know many pilots and a few true aviators. There is a distinct difference that I have the greatest respect for. |
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mdnanwelch7(at)hotmail.co
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| Posted: Sun Apr 05, 2009 10:34 am Post subject: Any suggestions for sticking altimeter? |
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John.
If I had a sticky altimeter needle C here's what I'd do. First C lay out a clean towel for a spotless work area. Wash your hands real good C to get rid of any skin oils. Round up your itty bitty screwdriver set C and remove the front bezel and glass. Continue removing the (2) screws that hold the inner parts inside the housing. Remove the inner parts. It comes out as an assembly.
Put one (1) drop of mineral oil on the needle swinging point. (you might have better access to this location from the rear of the dial face.) While you have the gauge apart C carefully C very lightly blow any dust that may have gotten into the bellows and gear mechanism.
Get some Windex glass cleaner C and thoroughly clean the inside and outside of the front glass. Reassemble.
The insides of the altimeter are very sensitive to ham hands. We're talking toothpicks C and Qtips C and a super light touch. That drop of oil should really help with the needle swinging action. It MAY not hurt to put a teensy bit of oil on the gears that go between the needle and the bellows.....you'll see what I mean.
Hope this helps.
BTW C thanks again for the gear leg measurements. One of the best mods I did to my MkIII.
Mike Welch
MkIII
| Quote: | Subject: Any suggestions for sticking altimeter?
From: gearbender(at)bellsouth.net
Date: Sun C 5 Apr 2009 10:16:39 -0700
To: kolb-list(at)matronics.com
--> Kolb-List message posted by: "John Bickham" <gearbender(at)bellsouth.net>
Hello folks C
Was wondering if anyone has any suggestions for a sticking altimeter? I know the obvious suggestion is buy a new one. Probably will do that. It is sticking around 500 ft. That is kinda where I spend a lot of time. Must have wore the mechanism out there. It will come unstuck with a few taps or with enough gain in altitude.
We stay in a very humid and wet environment. I think the guts have rusted or something.
Just wondering if there are I tricks out there for this?
Looking at AS&S for new altimeter. Trying to work on squawk list for MV. Yesterday C flew 2.3 hours with 9 cross wind landings (15 knots) to build up my wind threshold for the trip out west. Trying to get ready.
Appreciate any help or suggestions. Stay safe.
--------
Thanks too much C
John Bickham
Mark III-C w/ 912UL
St. Francisville C LA
Landing a plane and being married - a few smooth moments mixed with a lot of rough ones.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=237826#237826
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lucien
Joined: 03 Jun 2007
Posts: 721
Location: santa fe, NM
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| Posted: Sun Apr 05, 2009 11:41 am Post subject: Re: Any suggestions for sticking altimeter? |
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| John Bickham wrote: | Hello folks,
Was wondering if anyone has any suggestions for a sticking altimeter? I know the obvious suggestion is buy a new one. Probably will do that. It is sticking around 500 ft. That is kinda where I spend a lot of time. Must have wore the mechanism out there. It will come unstuck with a few taps or with enough gain in altitude.
We stay in a very humid and wet environment. I think the guts have rusted or something.
Just wondering if there are I tricks out there for this?
Looking at AS&S for new altimeter. Trying to work on squawk list for MV. Yesterday, flew 2.3 hours with 9 cross wind landings (15 knots) to build up my wind threshold for the trip out west. Trying to get ready.
Appreciate any help or suggestions. Stay safe. |
Only trick I know of for that climate is to get out of there, at least 1500 north and west....... I lived in central TX for 30 years and my health and mental state are significantly improved having left there for northern NM (and no rust/mold all over the plane) a couple years ago. Took me long enough I suppose.......
As for the alt., yeah once they start to stick or give the wobbly needle syndrome, you're better off simply replacing it. That does indicate the mechanism is worn.
Vibration is what does them in, if you can isolate it somehow during mounting they'll last a fair bit longer....
LS
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LS
Titan II SS |
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lcottrell
Joined: 29 May 2006
Posts: 1494
Location: Jordan Valley, Or
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| Posted: Sun Apr 05, 2009 12:22 pm Post subject: Any suggestions for sticking altimeter? |
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