Today's Message Index:
----------------------
1. 02:49 AM - ASI question (John Kent)
2. 04:20 AM - Re: Epoxy not hardening (Larry Bowen)
3. 04:50 AM - Re: Property Tax Appeal (Dana Overall)
4. 04:53 AM - Re: Sealing fuel tank inspection plate & sender (Scott)
5. 05:56 AM - higher gas burn (Charles Heathco)
6. 06:41 AM - Re: static port & altimeter error (Kelly Patterson)
7. 06:49 AM - Re: Sealing fuel tank inspection plate & sender (Dale Ensing)
8. 06:49 AM - Re: higher gas burn (linn Walters)
9. 06:56 AM - Re: Sealing fuel tank inspection plate & sender (Dale Ensing)
10. 09:09 AM - Re: Property Tax Appeal (Rob Prior)
11. 09:12 AM - Re: higher gas burn (Konrad L. Werner)
12. 09:29 AM - Re: Re: static port & altimeter error (Kevin Horton)
13. 10:44 AM - Re: Sealing fuel tank inspection plate & sender (Jim Jewell)
14. 11:00 AM - Re: Property Tax Appeal (Dana Overall)
15. 11:08 AM - Re: Re: static port & altimeter error (Scott)
16. 11:33 AM - Re: higher gas burn (Kevin Horton)
17. 12:49 PM - Re: Re: static port & altimeter error (Kevin Horton)
18. 01:07 PM - Re: ASI question (Doug Gray)
19. 01:14 PM - Re: Property Tax Appeal (Jim Fogarty at Lakes & Leisure Realty)
20. 02:15 PM - Re: Property Tax Appeal (n801bh@netzero.com)
21. 02:53 PM - Re: Re: static port & altimeter error (Scott)
22. 04:12 PM - Fw: New trim servo controller (=?utf-8?B?Qm9iIE5ld21hbg==?=)
23. 04:46 PM - Re: VHB Tape vs Rivets (Dave Saylor)
24. 04:49 PM - Re: Re: static port & altimeter error (Doug Gray)
25. 05:24 PM - Re: Re: static port & altimeter error (Dale Walter)
26. 07:21 PM - Re: static port & altimeter error - ATC concerns (Marty Helller)
27. 08:32 PM - Re: Re: static port & altimeter error - ATC concerns (Kelly McMullen)
Message 1
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If the asi is off by the same arc segment over the entire range, the pointer
shaft gear may have jumped a few cogs. You could try removing the pointer
and replacing it in the correct position and then check the calibration.
The pointer should pop off if you put a piece of cloth/cardboard at each
side to protect the dial and use two (padded if possible) screwdrivers, one
on each side to lever it up without putting any side load on the shaft.
Press it back in the correct position (repeat as necessary! - I have just
replaced a dial and pointer for an 'authentic' Cub asi so guess why I say
that!).
J.Kent RV-4 EI-DIY.
Message 2
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| Subject: | Re: Epoxy not hardening |
It's called blush. Easily removed with water and a scotchbrite pad.
--
Larry Bowen
Larry@BowenAero.com
http://BowenAero.com
On 10/9/07, scott bilinski <rv8a2001@yahoo.com> wrote:
>
>
> When ever you have a problem like this I beleive you should always call
> the manufacturer, they know better than anybody as to what is going on. I
> had the same problem on the cowl and after calling the manufacturer they
> told me that it is normal to get a film on the surface of the epoxy......I
> dont remember the reasoning (its been 5 years) to get it off I just sanded,
> yes it plugged the sand paper but I had a bunch so......
>
>
> Scott Bilinski
> RV-8a
>
>
> ----- Original Message ----
> From: Andrew Olech <olechap@comcast.net>
> To: rv-list@matronics.com
> Sent: Tuesday, October 9, 2007 7:29:28 PM
> Subject: RV-List: Epoxy not hardening
>
>
>
>
> Hey guys,
>
> I'm having a problem with the epoxy (aeropoxy) I used for coating the cowl
> surface. I thinned with acetone per Van's directions, but after 4 days
> now
> (or so) it's still tacky. It feels smooth if you run your finger over it,
> but if you just touch it - it's sticky.
>
> Batch was purchased 10 mo ago (no date on container)
> Stored in 60F+
> Parts are curing in a humidity controlled environment, 70-75F
> Epoxy worked ok 3 months ago
> Mixed by weight on postal scale
>
> That said, I think I figured it out... but check me. A few of my
> colleagues
> mentioned that my hardener might be the problem and that it needs
> stirring.
> I opened the can and it had crystallized slightly. I suppose if I read
> the
> side of the can in CAPS where it says "MAY CRYSTALLIZE IN STORAGE" that I
> would have checked earlier. My questions are:
>
> 1. Since I mixed a few batches without homogeneous hardener, would the
> mixed remainder be of the wrong constituents and should I just throw it
> out?
> I'm not planning on using this stuff for anything flight critical or
> structural. Perhaps I need to heat the hardener to re-mix it correctly?
>
> 2. How can I remove the sticky crap off the cowling so I can start over,
> or
> is there something I can do to cure it? Sanding just gums up the
> sandpaper
> and acetone just made it stickier. I tried a small corner of MEK, but
> wonder if I'll hurt the prepreg substrate.
>
> Any suggestions? All comments will be appreciated.
>
> -Andy
>
>
> Pinpoint customers who are looking for what you sell.
> http://searchmarketing.yahoo.com/
>
>
Message 3
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| Subject: | Property Tax Appeal |
That's what I did. My airplane is a DO-7. Nothing for the tax people to c
ompare.
Dana Overall
Richmond, KY i39
RV-7 slider, Imron black, "Black Magic"
O 360 A1A, C/S C2YK-1BF/F7666A4
http://rvflying.tripod.com/blackwing1.jpg
http://rvflying.tripod.com
do not archive
> Date: Wed, 10 Oct 2007 00:31:45 -0400
> From: pitts_pilot@bellsouth.net
> To: rv-list@matronics.com
> Subject: Re: RV-List: Property Tax Appeal
>
>
> This is the reason I'll register my RV-10 as anything but 'RV-10'.
> Something like a 'VANS special' might work. The State tax guys look up
> ads for airplanes to set value of like-registered planes. The other tax
> item is to send your state whatever you want (but be somewhat
> reasonable) BEFORE they send you a letter. Send them the tax just
> before you register your plane since registration is what triggers the
> tax letter.
> Linn
> do not archive
>
> >>
> >> Listers:
> >> I'm in the process of appealing the property tax valuation on my
> >> RV-9A. I spent approximately 60k and it's being valued at 108k by
> >> San Bernardino Co., CA. So I'm looking for 3 or 4 people who have
> >> sold or bought an RV-9A who would be willing to share their hard data
> >> with me such as name, phone#, selling price, etc. All information
> >> would be kept confidential shared only with the County.
> >
>
>
>
===========
===========
===========
>
>
>
_________________________________________________________________
Climb to the top of the charts!- Play Star Shuffle:- the word scramble
challenge with star power.
http://club.live.com/star_shuffle.aspx?icid=starshuffle_wlmailtextlink_oc
t
Message 4
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| Subject: | Re: Sealing fuel tank inspection plate & sender |
You haven't seen me work with hardware, have you? ;)
do not archive
Scott
http://corbenflyer.tripod.com/
Gotta Fly or Gonna Die
Building RV-4 (Super Slow Build Version)
mike humphrey wrote:
>
> Try SS Torx screws, ... You cannot strip them.
> Mike H
>
Message 5
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I flew from Fayetteville ar to Columbus Oh and back fior the mustang
thing, and calculated my gas burn, first since I put in the newer
O-320. it was burning 9+ at 2400 and 10 at 2500. old engine burning a
gal less. I lean aressivly, the old way I learned, no gauges. I put the
orig carb on the new engine. so I am baffled as to why gs burn has
increased. Both engines are 150hp. Any Ideas? Charlie Heathco
Message 6
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| Subject: | Re: static port & altimeter error |
My static ports were so far off I have had ATC ask me to turn off the
altitude reporting on my transponder. Investigation showed the convex
'dome' of the Vans pop rivet was causing a vacuum as the air passed over. I
ground the rivet head flat (on a painted plane!) and the error went away.
Use a GPS to see what your 'true' elevation is vs. the altimeter. If the
altimeter reads high, consider this fix.
Kelly Patterson
RV-6A N716K
PHX, AZ 185 hrs
Time: 01:37:30 PM PST US
From: "John D. Heath" <altoq@cebridge.net>
Subject: Re: RV-List: Altimeter error - ASI question
Doug,
That one has to go to the shop. I can say though, airspeed indicator errors
are generally in the Pitot/Static system. The main trouble spot seems to be
the Static Port position and height above the surrounding surface. There are
some very elegant solutions available for static ports, but in my opinion
they are just a fancy way to terminate the static tubing at skin level. A
cheap pop rivet with enough length to install the tubing on and a washer
placed between it and the head of the gun when it is installed has worked
for me many times. The washer is to make the rivet head flat and without the
slight oval shape they normally have.
John D.
Message 7
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| Subject: | Re: Sealing fuel tank inspection plate & sender |
Good point Jim. The round and button head screws have a much smaller hex
socket relative to the screw size than do the Allen heads (which is what I
was suggesting and used on my tanks).
Dale
> Dale and others,
>
> I bought some SS 8X32 round or button head screws that had the annoying
> habit of stripping out during installation.
> The Allen wrench key socket size was 'about' 3/32" ..(Its been a while)
> ;-)
>
> Later I bought a box of SS 8X32 "Allen head' screws. These required an
> Allen head socket wrench size of 'about' 3/16" and are plenty strong
> enough to be used in places such as the fuel tanks etc.
> I have yet to strip out one of these Allen head screws even when being
> deliberately abusive during a test to see what they could take.
> They have been holding back fuel for a year so far and they offer far
> better access in tight quarters than their Philips head type cousins.
>
> Jim in Kelowna
>
>
>>
>> Kyle
>> Was wondering.....did the socket heads of the Allen head cap screws strip
>> out because of the initial torque when first installed? Or, where there
>> other factors? It is easy to over torque them because of the hex socket
>> vs. the Phillips.
>> Dale
>>
>>> <kboatright1@comcast.net>
>>>
>>> Just another data point...
>>>
>>> When I performed the work for the service bulletin, I had a nightmare of
>>> a time with the Stainless Steel fasteners I planned to use as
>>> replacements for the Phillips screws. I stripped out several of the
>>> heads (Allen Wrench type) before I went back to the Phillips screws.
>>>
>>> KB
>>
>>>>
>>>> You might consider using SS Allen head cap screws on the inspection
>>>> plates and the sender mounts in lieu of the Phillips head screws. In my
>>>> opinion; 1. They make it easier to more evenly torque the screws. 2.
>>>> The bottom of the head of the cap screws have a slight undercut which
>>>> makes a sealing edge out at the periphery of the screw head. 3. And, if
>>>> you need to remove or re-torque the screws with the wing on, it is
>>>> much easier to do with a short Allen wrench segment in one of the very
>>>> small right angle ratchet screwdrivers handles.
>>>>
>>>> I had done my 6A tanks with the cap screws and when Van's came out with
>>>> the SB, getting the screws out and reinstalling them was very simple.
>>>> Dale Ensing
Message 8
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| Subject: | Re: higher gas burn |
Just a WAG Charlie, but differences in the intake path (new Vs old) may
change the 'lean point' so you're not able to lean as much on the new
installation.
Linn
Charles Heathco wrote:
> I flew from Fayetteville ar to Columbus Oh and back fior the mustang
> thing, and calculated my gas burn, first since I put in the newer
> O-320. it was burning 9+ at 2400 and 10 at 2500. old engine burning a
> gal less. I lean aressivly, the old way I learned, no gauges. I put
> the orig carb on the new engine. so I am baffled as to why gs burn has
> increased. Both engines are 150hp. Any Ideas? Charlie Heathco
>
>
Message 9
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| Subject: | Re: Sealing fuel tank inspection plate & sender |
I have never had any problems stripping the sockets on Allen head cap
screws. Matter of fact- I run a Allen head cap screw into new plate nuts to
establish a "thread" before inserting Phillips head screws to reduce the
wear on the Phillips head.
Dale
----- Original Message -----
From: "mike humphrey" <mike109g6@insideconnect.net>
Sent: Wednesday, October 10, 2007 2:30 AM
Subject: Re: RV-List: Sealing fuel tank inspection plate & sender
> <mike109g6@insideconnect.net>
>
> Dale,
> Try SS Torx screws, www.microfasteners.com they take a #20 6 point torx
> bit, at any hardware store. Same driver as premium deck screws. You
> cannot strip them.
> Mike H
> ----- Original Message -----
> From: "Jim Jewell" <jjewell@telus.net>
> To: <rv-list@matronics.com>
> Sent: Wednesday, October 10, 2007 2:03 AM
> Subject: Re: RV-List: Sealing fuel tank inspection plate & sender
>
>
>>
>> Dale and others,
>>
>> I bought some SS 8X32 round or button head screws that had the annoying
>> habit of stripping out during installation.
>> The Allen wrench key socket size was 'about' 3/32" ..(Its been a while)
>> ;-)
>>
>> Later I bought a box of SS 8X32 "Allen head' screws. These required an
>> Allen head socket wrench size of 'about' 3/16" and are plenty strong
>> enough to be used in places such as the fuel tanks etc.
>> I have yet to strip out one of these Allen head screws even when being
>> deliberately abusive during a test to see what they could take.
>> They have been holding back fuel for a year so far and they offer far
>> better access in tight quarters than their Philips head type cousins.
>>
>> Jim in Kelowna
>>
>> ----- Original Message -----
>> From: "Dale Ensing" <densing@carolina.rr.com>
>> To: <rv-list@matronics.com>
>> Sent: Tuesday, October 09, 2007 6:21 PM
>> Subject: Re: RV-List: Sealing fuel tank inspection plate & sender
>>
>>
>>>
>>> Kyle
>>> Was wondering.....did the socket heads of the Allen head cap screws
>>> strip out because of the initial torque when first installed? Or, where
>>> there other factors? It is easy to over torque them because of the hex
>>> socket vs. the Phillips.
>>> Dale
>>>
>>>> <kboatright1@comcast.net>
>>>>
>>>> Just another data point...
>>>>
>>>> When I performed the work for the service bulletin, I had a nightmare
>>>> of a time with the Stainless Steel fasteners I planned to use as
>>>> replacements for the Phillips screws. I stripped out several of the
>>>> heads (Allen Wrench type) before I went back to the Phillips screws.
>>>>
>>>> KB
>>>
>>>>>
>>>>> You might consider using SS Allen head cap screws on the inspection
>>>>> plates and the sender mounts in lieu of the Phillips head screws. In
>>>>> my opinion; 1. They make it easier to more evenly torque the screws.
>>>>> 2. The bottom of the head of the cap screws have a slight undercut
>>>>> which makes a sealing edge out at the periphery of the screw head. 3.
>>>>> And, if you need to remove or re-torque the screws with the wing on,
>>>>> it is much easier to do with a short Allen wrench segment in one of
>>>>> the very small right angle ratchet screwdrivers handles.
>>>>>
>>>>> I had done my 6A tanks with the cap screws and when Van's came out
>>>>> with the SB, getting the screws out and reinstalling them was very
>>>>> simple.
>>>>> Dale Ensing
>>>
>>>
>>>
>>>
>>>
>>
>>
>>
>>
>>
>>
>
>
>
Message 10
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| Subject: | Property Tax Appeal |
On 4:47 2007-10-10 Dana Overall <bo124rs@hotmail.com> wrote:
> That's what I did. My airplane is a DO-7. Nothing for the tax
> people to compare.
>
> Dana Overall
> Richmond, KY i39
> RV-7 slider, Imron black, "Black Magic"
If you're calling it an RV-7 in your signature, posting many, many messages
with that same signature over the years to a public list, and discussing
all of the things you did on "your -7", it's pretty clear that the plane is
fundamentally an RV-7. If you're only calling it a DO-7 for the purposes
of tax evasion, i'd think the tax man would have a pretty easy time of
raking you over the coals for it.
I know the probability is vanishingly low, but occasionally Tax people do
check on these things... If they get it in their mind that you're trying to
evade taxes, they'll look everywhere to prove it.
-Rob
Message 11
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| Subject: | Re: higher gas burn |
How many hours are on the new engine so far?
----- Original Message -----
From: Charles Heathco
To: rv-list
Sent: Wednesday, October 10, 2007 6:49 AM
Subject: RV-List: higher gas burn
I flew from Fayetteville ar to Columbus Oh and back fior the mustang
thing, and calculated my gas burn, first since I put in the newer
O-320. it was burning 9+ at 2400 and 10 at 2500. old engine burning a
gal less. I lean aressivly, the old way I learned, no gauges. I put the
orig carb on the new engine. so I am baffled as to why gs burn has
increased. Both engines are 150hp. Any Ideas? Charlie Heathco
Message 12
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| Subject: | Re: static port & altimeter error |
How would ATC know your static system is not accurate? All they see is the altitude
reported from your transponder, which should be that which is sensed at
the static ports. They have no way to compare it against anything else.
GPS altitude is not the same thing as barometric altitude. There are many valid
reasons why GPS altitude might differ by several hundred feet from barometric
altitude, yet both could be correct (just as TAS may differ greatly from ground
speed, yet both are correct, as they are measuring different things). GPS
altitude is only the same as barometric altitude on the extremely rare day where
the atmosphere perfectly matches a standard atmosphere.
Kevin Horton
On Wed, 10 Oct 2007 06:38:25 -0700
"Kelly Patterson" <kbob@cox.net> wrote:
>
> My static ports were so far off I have had ATC ask me to turn off the
> altitude reporting on my transponder. Investigation showed the convex
> 'dome' of the Vans pop rivet was causing a vacuum as the air passed over. I
> ground the rivet head flat (on a painted plane!) and the error went away.
>
> Use a GPS to see what your 'true' elevation is vs. the altimeter. If the
> altimeter reads high, consider this fix.
>
> Kelly Patterson
> RV-6A N716K
> PHX, AZ 185 hrs
>
>
> Time: 01:37:30 PM PST US
> From: "John D. Heath" <altoq@cebridge.net>
> Subject: Re: RV-List: Altimeter error - ASI question
>
>
> Doug,
>
> That one has to go to the shop. I can say though, airspeed indicator errors
> are generally in the Pitot/Static system. The main trouble spot seems to be
> the Static Port position and height above the surrounding surface. There are
> some very elegant solutions available for static ports, but in my opinion
> they are just a fancy way to terminate the static tubing at skin level. A
> cheap pop rivet with enough length to install the tubing on and a washer
> placed between it and the head of the gun when it is installed has worked
> for me many times. The washer is to make the rivet head flat and without the
> slight oval shape they normally have.
>
> John D.
>
Message 13
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| Subject: | Re: Sealing fuel tank inspection plate & sender |
Hi Dale,
I to have often used the Allen head cap screws breaking in new plate nut
threads.
Way back when ordering tools etc. I bought a small container of Beolube from
Avery tools. I have used this product on every screw in my 6-A. It
conditions the plate-nut threads increasing their overall utility without
unduly reducing the plate-nut's grip .
I have used this product as suggested as a cutting agent when drilling holes
with the drill press and the lathe.
I have loaned out the small plastic tube of soft waxy soapstone like Beolube
to others and still have about two thirds of the original container left.
A must have product for me.
Jim in Kelowna
----- Original Message -----
From: "Dale Ensing" <densing@carolina.rr.com>
Sent: Wednesday, October 10, 2007 6:53 AM
Subject: Re: RV-List: Sealing fuel tank inspection plate & sender
>
> I have never had any problems stripping the sockets on Allen head cap
> screws. Matter of fact- I run a Allen head cap screw into new plate nuts
> to establish a "thread" before inserting Phillips head screws to reduce
> the wear on the Phillips head.
> Dale
> ----- Original Message -----
> From: "mike humphrey" <mike109g6@insideconnect.net>
> To: <rv-list@matronics.com>
> Sent: Wednesday, October 10, 2007 2:30 AM
> Subject: Re: RV-List: Sealing fuel tank inspection plate & sender
>
>
>> <mike109g6@insideconnect.net>
>>
>> Dale,
>> Try SS Torx screws, www.microfasteners.com they take a #20 6 point torx
>> bit, at any hardware store. Same driver as premium deck screws. You
>> cannot strip them.
>> Mike H
>> ----- Original Message -----
>> From: "Jim Jewell" <jjewell@telus.net>
>> To: <rv-list@matronics.com>
>> Sent: Wednesday, October 10, 2007 2:03 AM
>> Subject: Re: RV-List: Sealing fuel tank inspection plate & sender
>>
>>
>>>
>>> Dale and others,
>>>
>>> I bought some SS 8X32 round or button head screws that had the annoying
>>> habit of stripping out during installation.
>>> The Allen wrench key socket size was 'about' 3/32" ..(Its been a while)
>>> ;-)
>>>
>>> Later I bought a box of SS 8X32 "Allen head' screws. These required an
>>> Allen head socket wrench size of 'about' 3/16" and are plenty strong
>>> enough to be used in places such as the fuel tanks etc.
>>> I have yet to strip out one of these Allen head screws even when being
>>> deliberately abusive during a test to see what they could take.
>>> They have been holding back fuel for a year so far and they offer far
>>> better access in tight quarters than their Philips head type cousins.
>>>
>>> Jim in Kelowna
>>>
>>> ----- Original Message -----
>>> From: "Dale Ensing" <densing@carolina.rr.com>
>>> To: <rv-list@matronics.com>
>>> Sent: Tuesday, October 09, 2007 6:21 PM
>>> Subject: Re: RV-List: Sealing fuel tank inspection plate & sender
>>>
>>>
>>>>
>>>> Kyle
>>>> Was wondering.....did the socket heads of the Allen head cap screws
>>>> strip out because of the initial torque when first installed? Or, where
>>>> there other factors? It is easy to over torque them because of the hex
>>>> socket vs. the Phillips.
>>>> Dale
>>>>
>>>>> <kboatright1@comcast.net>
>>>>>
>>>>> Just another data point...
>>>>>
>>>>> When I performed the work for the service bulletin, I had a nightmare
>>>>> of a time with the Stainless Steel fasteners I planned to use as
>>>>> replacements for the Phillips screws. I stripped out several of the
>>>>> heads (Allen Wrench type) before I went back to the Phillips screws.
>>>>>
>>>>> KB
>>>>
>>>>>> <densing@carolina.rr.com>
>>>>>>
>>>>>> You might consider using SS Allen head cap screws on the inspection
>>>>>> plates and the sender mounts in lieu of the Phillips head screws. In
>>>>>> my opinion; 1. They make it easier to more evenly torque the screws.
>>>>>> 2. The bottom of the head of the cap screws have a slight undercut
>>>>>> which makes a sealing edge out at the periphery of the screw head. 3.
>>>>>> And, if you need to remove or re-torque the screws with the wing on,
>>>>>> it is much easier to do with a short Allen wrench segment in one of
>>>>>> the very small right angle ratchet screwdrivers handles.
>>>>>>
>>>>>> I had done my 6A tanks with the cap screws and when Van's came out
>>>>>> with the SB, getting the screws out and reinstalling them was very
>>>>>> simple.
>>>>>> Dale Ensing
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>
>>
>>
>>
>
>
>
Message 14
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| Subject: | Property Tax Appeal |
Rob, you are taking this far off base. I simply registered my airplane as
a DO-7. This enabled me to set the taxable value rather the property valua
tion office. Once they set the value, that's it unless you can prove other
wise, just like what the original poster is having to go through. At no ti
me did I ever say anything about tax evasion I just didn't want to have to
argue with them.
Dana Overall
Richmond, KY i39
RV-7 slider, Imron black, "Black Magic"
O 360 A1A, C/S C2YK-1BF/F7666A4
http://rvflying.tripod.com/blackwing1.jpg
http://rvflying.tripod.com
do not archive
> Date: Wed, 10 Oct 2007 09:29:41 -0700
> From: rv7@b4.ca
> Subject: RE: RV-List: Property Tax Appeal
> To: rv-list@matronics.com
>
>
> On 4:47 2007-10-10 Dana Overall <bo124rs@hotmail.com> wrote:
> > That's what I did. My airplane is a DO-7. Nothing for the tax
> > people to compare.
> >
> > Dana Overall
> > Richmond, KY i39
> > RV-7 slider, Imron black, "Black Magic"
>
> If you're calling it an RV-7 in your signature, posting many, many messag
es
> with that same signature over the years to a public list, and discussing
> all of the things you did on "your -7", it's pretty clear that the plane
is
> fundamentally an RV-7. If you're only calling it a DO-7 for the purposes
> of tax evasion, i'd think the tax man would have a pretty easy time of
> raking you over the coals for it.
>
> I know the probability is vanishingly low, but occasionally Tax people do
> check on these things... If they get it in their mind that you're trying
to
> evade taxes, they'll look everywhere to prove it.
>
> -Rob
>
>
===========
===========
===========
>
>
>
_________________________________________________________________
Peek-a-boo FREE Tricks & Treats for You!
http://www.reallivemoms.com?ocid=TXT_TAGHM&loc=us
Message 15
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| Subject: | Re: static port & altimeter error |
Wouldn't ATC know if they assigned an altitude such as 6,500 feet and
the pilot of his RV flew at 6,500 feet according to his altimeter, but
his encoder was reporting 6,000 or 7,000 feet?
Scott
http://corbenflyer.tripod.com/
Gotta Fly or Gonna Die
Building RV-4 (Super Slow Build Version)
Kevin Horton wrote:
>
>How would ATC know your static system is not accurate? All they see is the altitude
reported from your transponder, which should be that which is sensed at
the static ports. They have no way to compare it against anything else.
>
>GPS altitude is not the same thing as barometric altitude. There are many valid
reasons why GPS altitude might differ by several hundred feet from barometric
altitude, yet both could be correct (just as TAS may differ greatly from ground
speed, yet both are correct, as they are measuring different things). GPS
altitude is only the same as barometric altitude on the extremely rare day where
the atmosphere perfectly matches a standard atmosphere.
>
>Kevin Horton
>
>On Wed, 10 Oct 2007 06:38:25 -0700
>"Kelly Patterson" <kbob@cox.net> wrote:
>
>
>
>>
>>My static ports were so far off I have had ATC ask me to turn off the
>>altitude reporting on my transponder. Investigation showed the convex
>>'dome' of the Vans pop rivet was causing a vacuum as the air passed over. I
>>ground the rivet head flat (on a painted plane!) and the error went away.
>>
>>Use a GPS to see what your 'true' elevation is vs. the altimeter. If the
>>altimeter reads high, consider this fix.
>>
>>Kelly Patterson
>>RV-6A N716K
>>PHX, AZ 185 hrs
>>
>>
>>Time: 01:37:30 PM PST US
>>From: "John D. Heath" <altoq@cebridge.net>
>>Subject: Re: RV-List: Altimeter error - ASI question
>>
>>
>>Doug,
>>
>> That one has to go to the shop. I can say though, airspeed indicator errors
>>are generally in the Pitot/Static system. The main trouble spot seems to be
>>the Static Port position and height above the surrounding surface. There are
>>some very elegant solutions available for static ports, but in my opinion
>>they are just a fancy way to terminate the static tubing at skin level. A
>>cheap pop rivet with enough length to install the tubing on and a washer
>>placed between it and the head of the gun when it is installed has worked
>>for me many times. The washer is to make the rivet head flat and without the
>>slight oval shape they normally have.
>>
>>John D.
>>
>>
>>
>
>
>
>
Message 16
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| Subject: | Re: higher gas burn |
On Wed, 10 Oct 2007 07:49:58 -0500
"Charles Heathco" <cheathco@cox.net> wrote:
> I flew from Fayetteville ar to Columbus Oh and back fior the mustang thing, and
calculated my gas burn, first since I put in the newer O-320. it was burning
9+ at 2400 and 10 at 2500. old engine burning a gal less. I lean aressivly,
the old way I learned, no gauges. I put the orig carb on the new engine. so I
am baffled as to why gs burn has increased. Both engines are 150hp. Any Ideas?
Charlie Heathco
Is it possible that the new engine is making more power than the old one? Has
your cruise speed changed at all? Do you have the same prop as before?
Kevin Horton
Message 17
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| Subject: | Re: static port & altimeter error |
But, if his altimeter was connected to the same static source as the encoder (as
it should), a servicable altimeter should read the same as the encoder is reporting
(ignoring the effect of altimeter setting, which is accounted for by ATC).
It wouldn't matter if a bad static port gave a 1000 ft error - both the
altimeter and the encoder would have the same error. If the altimeter and encoder
are connected to the same source, and they say different things, then one
of them is unserviceable, or there is a large static leak between the two. The
problem cannot be the static source.
Kevin
On Wed, 10 Oct 2007 18:04:18 +0000
Scott <acepilot@bloomer.net> wrote:
>
> Wouldn't ATC know if they assigned an altitude such as 6,500 feet and
> the pilot of his RV flew at 6,500 feet according to his altimeter, but
> his encoder was reporting 6,000 or 7,000 feet?
>
> Scott
> http://corbenflyer.tripod.com/
> Gotta Fly or Gonna Die
> Building RV-4 (Super Slow Build Version)
>
>
>
> Kevin Horton wrote:
>
> >
> >How would ATC know your static system is not accurate? All they see is the
altitude reported from your transponder, which should be that which is sensed
at the static ports. They have no way to compare it against anything else.
> >
> >GPS altitude is not the same thing as barometric altitude. There are many valid
reasons why GPS altitude might differ by several hundred feet from barometric
altitude, yet both could be correct (just as TAS may differ greatly from
ground speed, yet both are correct, as they are measuring different things).
GPS altitude is only the same as barometric altitude on the extremely rare day
where the atmosphere perfectly matches a standard atmosphere.
> >
> >Kevin Horton
> >
> >On Wed, 10 Oct 2007 06:38:25 -0700
> >"Kelly Patterson" <kbob@cox.net> wrote:
> >
> >
> >
> >>
> >>My static ports were so far off I have had ATC ask me to turn off the
> >>altitude reporting on my transponder. Investigation showed the convex
> >>'dome' of the Vans pop rivet was causing a vacuum as the air passed over.
I
> >>ground the rivet head flat (on a painted plane!) and the error went away.
> >>
> >>Use a GPS to see what your 'true' elevation is vs. the altimeter. If the
> >>altimeter reads high, consider this fix.
> >>
> >>Kelly Patterson
> >>RV-6A N716K
> >>PHX, AZ 185 hrs
> >>
> >>
> >>Time: 01:37:30 PM PST US
> >>From: "John D. Heath" <altoq@cebridge.net>
> >>Subject: Re: RV-List: Altimeter error - ASI question
> >>
> >>
> >>Doug,
> >>
> >> That one has to go to the shop. I can say though, airspeed indicator errors
> >>are generally in the Pitot/Static system. The main trouble spot seems to be
> >>the Static Port position and height above the surrounding surface. There are
> >>some very elegant solutions available for static ports, but in my opinion
> >>they are just a fancy way to terminate the static tubing at skin level. A
> >>cheap pop rivet with enough length to install the tubing on and a washer
> >>placed between it and the head of the gun when it is installed has worked
> >>for me many times. The washer is to make the rivet head flat and without the
> >>slight oval shape they normally have.
> >>
> >>John D.
> >>
> >>
> >>
> >
> >
> >
> >
> >
> >
> >
>
>
>
>
Message 18
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|
| Subject: | Re: ASI question |
This just doesn't seem right. I find it difficult to believe an
instrument like this has no better way for adjusting cal.
Looking into the pitot port I see a slotted collar (nut?) and in the
static port what might be a small lever. I am thinking these may be
part of an adjustment mechanism.
Any instrument fitters/mechanics out there?
Doug Gray
On Wed, 2007-10-10 at 10:42 +0100, John Kent wrote:
> If the asi is off by the same arc segment over the entire range, the
> pointer
> shaft gear may have jumped a few cogs. You could try removing the
> pointer
> and replacing it in the correct position and then check the
> calibration.
> The pointer should pop off if you put a piece of cloth/cardboard at
> each
> side to protect the dial and use two (padded if possible)
> screwdrivers, one
> on each side to lever it up without putting any side load on the
> shaft.
Message 19
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|
| Subject: | Re: Property Tax Appeal |
Dana, If the tax man Google's your name they will have all the
information they need regarding your airplane. Sorry.
We should all be working on changing the tax laws on personal aircraft.
In MN the rate is 6.5% on airplanes, and when I purchased the Cardinal
that is the rate I paid on the purchase price. This is totally
ridiculous to pay this much tax, but our State loves the money. Dana,
your DO-7 looks great and I hope they never check!
Jim
----- Original Message -----
From: Dana Overall
To: rv-list@matronics.com
Sent: Wednesday, October 10, 2007 12:57 PM
Subject: RE: RV-List: Property Tax Appeal
Rob, you are taking this far off base. I simply registered my
airplane as a DO-7. This enabled me to set the taxable value rather the
property valuation office. Once they set the value, that's it unless
you can prove otherwise, just like what the original poster is having to
go through. At no time did I ever say anything about tax evasion I just
didn't want to have to argue with them.
Dana Overall
Richmond, KY i39
RV-7 slider, Imron black, "Black Magic"
O 360 A1A, C/S C2YK-1BF/F7666A4
http://rvflying.tripod.com/blackwing1.jpg
http://rvflying.tripod.com
do not archive
> Date: Wed, 10 Oct 2007 09:29:41 -0700
> From: rv7@b4.ca
> Subject: RE: RV-List: Property Tax Appeal
> To: rv-list@matronics.com
>
>
> On 4:47 2007-10-10 Dana Overall <bo124rs@hotmail.com> wrote:
> > That's what I did. My airplane is a DO-7. Nothing for the tax
> > people to compare.
> >
> > Dana Overall
> > Richmond, KY i39
> > RV-7 slider, Imron black, "Black Magic"
>
> If you're calling it an RV-7 in your signature, posting many, many
messages
> with that same signature over the years to a public list, and
discussing
> all of the things you did on "your -7", it's pretty clear that the
plane is
> fundamentally an RV-7. If you're only calling it a DO-7 for the
purposes
> of tax evasion, i'd think the tax man would have a pretty easy time
of
> raking you over the coals for it.
>
> I know the probability is vanishingly low, but occasionally Tax
people do
> check on these things... If they get it in their mind that you're
trying to
> evade taxes, they'll look everywhere to
prov==============
>
>
>
-------------------------------------------------------------------------
-----
Peek-a-boo FREE Tricks & Treats for You! Get 'em!
-------------------------------------------------------------------------
-----
10/10/2007 8:43 AM
Message 20
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|
| Subject: | Property Tax Appeal |
Heck, if the California tax man says it worth 105,000. 00 $$$$ Make him
buy it for that amount. I bet they will change their tune REAL quick...
.
do not archive
Ben
0 Dana Overall <bo124rs@hotmail.com> wrote:
> That's what I did. My airplane is a DO-7. Nothing for the tax
> people to compare.
>
> Dana Overall
> Richmond, KY i39
> RV-7 slider, Imron black, "Black Magic"
If you're calling it an RV-7 in your signature, posting many, many messa
ges
with that same signature over the years to a public list, and discussing
all of the things you did on "your -7", it's pretty clear that the plane
is
fundamentally an RV-7. If you're only calling it a DO-7 for the purpose
s
of tax evasion, i'd think the tax man would have a pretty easy time of
raking you over the coals for it.
I know the probability is vanishingly low, but occasionally Tax people d
o
check on these things... If they get it in their mind that you're trying
to
evade taxes, they'll look everywhere to prove it.
-Rob
========================
===========
========================
===========
========================
===========
Message 21
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|
| Subject: | Re: static port & altimeter error |
I agree with that...I was making an assumption that the encoder OR the
altimeter was bad. The encoder could have one of the output pins open
or shorted to ground permanently giving a false number to the
transponder or the altimeter needs to be serviced...
Scott
http://corbenflyer.tripod.com/
Gotta Fly or Gonna Die
Building RV-4 (Super Slow Build Version)
Kevin Horton wrote:
>
>But, if his altimeter was connected to the same static source as the encoder (as
it should), a servicable altimeter should read the same as the encoder is reporting
(ignoring the effect of altimeter setting, which is accounted for by
ATC). It wouldn't matter if a bad static port gave a 1000 ft error - both the
altimeter and the encoder would have the same error. If the altimeter and encoder
are connected to the same source, and they say different things, then one
of them is unserviceable, or there is a large static leak between the two.
The problem cannot be the static source.
>
>Kevin
>
>On Wed, 10 Oct 2007 18:04:18 +0000
>Scott <acepilot@bloomer.net> wrote:
>
>
>
>>
>>Wouldn't ATC know if they assigned an altitude such as 6,500 feet and
>>the pilot of his RV flew at 6,500 feet according to his altimeter, but
>>his encoder was reporting 6,000 or 7,000 feet?
>>
>>Scott
>>http://corbenflyer.tripod.com/
>>Gotta Fly or Gonna Die
>>Building RV-4 (Super Slow Build Version)
>>
>>
>>
>>Kevin Horton wrote:
>>
>>
>>
>>>
>>>How would ATC know your static system is not accurate? All they see is the
altitude reported from your transponder, which should be that which is sensed
at the static ports. They have no way to compare it against anything else.
>>>
>>>GPS altitude is not the same thing as barometric altitude. There are many valid
reasons why GPS altitude might differ by several hundred feet from barometric
altitude, yet both could be correct (just as TAS may differ greatly from
ground speed, yet both are correct, as they are measuring different things).
GPS altitude is only the same as barometric altitude on the extremely rare day
where the atmosphere perfectly matches a standard atmosphere.
>>>
>>>Kevin Horton
>>>
>>>On Wed, 10 Oct 2007 06:38:25 -0700
>>>"Kelly Patterson" <kbob@cox.net> wrote:
>>>
>>>
>>>
>>>
>>>
>>>>
>>>>My static ports were so far off I have had ATC ask me to turn off the
>>>>altitude reporting on my transponder. Investigation showed the convex
>>>>'dome' of the Vans pop rivet was causing a vacuum as the air passed over.
I
>>>>ground the rivet head flat (on a painted plane!) and the error went away.
>>>>
>>>>Use a GPS to see what your 'true' elevation is vs. the altimeter. If the
>>>>altimeter reads high, consider this fix.
>>>>
>>>>Kelly Patterson
>>>>RV-6A N716K
>>>>PHX, AZ 185 hrs
>>>>
>>>>
>>>>Time: 01:37:30 PM PST US
>>>>From: "John D. Heath" <altoq@cebridge.net>
>>>>Subject: Re: RV-List: Altimeter error - ASI question
>>>>
>>>>
>>>>Doug,
>>>>
>>>>That one has to go to the shop. I can say though, airspeed indicator errors
>>>>are generally in the Pitot/Static system. The main trouble spot seems to be
>>>>the Static Port position and height above the surrounding surface. There are
>>>>some very elegant solutions available for static ports, but in my opinion
>>>>they are just a fancy way to terminate the static tubing at skin level. A
>>>>cheap pop rivet with enough length to install the tubing on and a washer
>>>>placed between it and the head of the gun when it is installed has worked
>>>>for me many times. The washer is to make the rivet head flat and without the
>>>>slight oval shape they normally have.
>>>>
>>>>John D.
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>
>>
>>
>>
>
>
>
>
Message 22
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|
| Subject: | Fw: New trim servo controller |
Sent via BlackBerry by AT&T
-----Original Message-----
From: "Bob Newman" <rcnewman@mycingular.blackberry.net>
To:"Matronics list" <rv10-list@matronics.com>
Subject: New trim servo controller
Fellow RV builders,
I would like to make you all aware of a new product I am introducing to the
homebuilt community.
We have developed a trim servo controller that eliminates the problems of
run-away trim and inoperative trim conditions.
Our new servo controller is called Safety-Trim and it provides speed control,
direction control, emergency reversing and time limited motion of standard
trim servos, such as the Ray Allen series.
We've been flying Safety-Trim in our Glastar and recently introduced it at
a local EAA fly-in in Toms River, NJ. 1 and 2 axis units are now available.
Please visit. www.tcwtech.com for all the details.
Please contact me off list at: rnewman@tcwtech.com
Best regards,
Bob Newman
RV-10. #40176
Glastar N99RN
Sent via BlackBerry by AT&T
Message 23
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|
| Subject: | VHB Tape vs Rivets |
I've been told first hand by an experienced RV4 builder in California that
he used VHB tape to stick the stiffeners to the inside of his elevators. He
had prior experience with it and has flown it many hours since. No
problems.
We use it here and there for non-structural items and it works great, but I
have not done long-term testing.
Dave Saylor
AirCrafters LLC
140 Aviation Way
Watsonville, CA
831-722-9141
831-750-0284 CL
www.AirCraftersLLC.com
-----Original Message-----
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com] On Behalf Of Chris W
Sent: Tuesday, October 09, 2007 1:51 PM
Subject: RV-List: VHB Tape vs Rivets
I have recently seen an episode of "Modern Marvels" on the history channel
called "Sticky Stuff". One of the things they had on that show, is this
tape called VHB tape made by 3M. In a test they repeatedly impacted a 16 lb
bowling ball against 2 sheets of aluminum bonded with VHB tape till it
failed, then they did the same test with the 2 sheets of aluminum riveted
together. Since this was 3M doing the test, obviously there tape performed
better. However based on the fact that bowling balls are between 8.5 and
8.6" in diameter, it appears as they only had a rivet every 4 inches. I
would be really curious to see how the tape compared to doing it with the
appropriate number of rivets.
Anyone want to try the test? Below is a link to a youtube video of the
demonstration.
http://youtube.com/watch?v=ZhKreIqU_R4
--
Chris W
KE5GIX
"Protect your digital freedom and privacy, eliminate DRM, learn more at
http://www.defectivebydesign.org/what_is_drm"
Message 24
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| Subject: | Re: static port & altimeter error |
My alt encoder has a tag that reads:
"Replacement or re-calibration of the altimeter used for flight requires
re-calibration of the Altitude Encoder"
Doug Gray
On Wed, 2007-10-10 at 21:52 +0000, Scott wrote:
>
> I agree with that...I was making an assumption that the encoder OR the
> altimeter was bad. The encoder could have one of the output pins open
> or shorted to ground permanently giving a false number to the
> transponder or the altimeter needs to be serviced...
>
> Scott
> http://corbenflyer.tripod.com/
> Gotta Fly or Gonna Die
> Building RV-4 (Super Slow Build Version)
>
>
>
> Kevin Horton wrote:
>
> >
> >But, if his altimeter was connected to the same static source as the encoder
(as it should), a servicable altimeter should read the same as the encoder is
reporting (ignoring the effect of altimeter setting, which is accounted for by
ATC). It wouldn't matter if a bad static port gave a 1000 ft error - both the
altimeter and the encoder would have the same error. If the altimeter and
encoder are connected to the same source, and they say different things, then
one of them is unserviceable, or there is a large static leak between the two.
The problem cannot be the static source.
> >
> >Kevin
> >
> >On Wed, 10 Oct 2007 18:04:18 +0000
> >Scott <acepilot@bloomer.net> wrote:
> >
> >
> >
> >>
> >>Wouldn't ATC know if they assigned an altitude such as 6,500 feet and
> >>the pilot of his RV flew at 6,500 feet according to his altimeter, but
> >>his encoder was reporting 6,000 or 7,000 feet?
> >>
> >>Scott
> >>http://corbenflyer.tripod.com/
> >>Gotta Fly or Gonna Die
> >>Building RV-4 (Super Slow Build Version)
> >>
> >>
> >>
> >>Kevin Horton wrote:
> >>
> >>
> >>
> >>>
> >>>How would ATC know your static system is not accurate? All they see is the
altitude reported from your transponder, which should be that which is sensed
at the static ports. They have no way to compare it against anything else.
> >>>
> >>>GPS altitude is not the same thing as barometric altitude. There are many
valid reasons why GPS altitude might differ by several hundred feet from barometric
altitude, yet both could be correct (just as TAS may differ greatly from
ground speed, yet both are correct, as they are measuring different things).
GPS altitude is only the same as barometric altitude on the extremely rare day
where the atmosphere perfectly matches a standard atmosphere.
> >>>
> >>>Kevin Horton
> >>>
> >>>On Wed, 10 Oct 2007 06:38:25 -0700
> >>>"Kelly Patterson" <kbob@cox.net> wrote:
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>>
> >>>>My static ports were so far off I have had ATC ask me to turn off the
> >>>>altitude reporting on my transponder. Investigation showed the convex
> >>>>'dome' of the Vans pop rivet was causing a vacuum as the air passed over.
I
> >>>>ground the rivet head flat (on a painted plane!) and the error went away.
> >>>>
> >>>>Use a GPS to see what your 'true' elevation is vs. the altimeter. If the
> >>>>altimeter reads high, consider this fix.
> >>>>
> >>>>Kelly Patterson
> >>>>RV-6A N716K
> >>>>PHX, AZ 185 hrs
> >>>>
> >>>>
> >>>>Time: 01:37:30 PM PST US
> >>>>From: "John D. Heath" <altoq@cebridge.net>
> >>>>Subject: Re: RV-List: Altimeter error - ASI question
> >>>>
> >>>>
> >>>>Doug,
> >>>>
> >>>>That one has to go to the shop. I can say though, airspeed indicator errors
> >>>>are generally in the Pitot/Static system. The main trouble spot seems to
be
> >>>>the Static Port position and height above the surrounding surface. There
are
> >>>>some very elegant solutions available for static ports, but in my opinion
> >>>>they are just a fancy way to terminate the static tubing at skin level. A
> >>>>cheap pop rivet with enough length to install the tubing on and a washer
> >>>>placed between it and the head of the gun when it is installed has worked
> >>>>for me many times. The washer is to make the rivet head flat and without
the
> >>>>slight oval shape they normally have.
> >>>>
> >>>>John D.
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>
> >>
> >>
> >>
> >
> >
> >
> >
> >
> >
> >
>
>
>
>
Message 25
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|
| Subject: | Re: static port & altimeter error |
In the US many or most approach control areas have radar altitude from their
ground system, independent of your on board encoder. Enroute seems to be a
different story.
Dale
Do not archive
-----Original Message-----
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com] On Behalf Of Kevin Horton
Sent: Wednesday, October 10, 2007 12:23 PM
Subject: Re: RV-List: Re: static port & altimeter error
How would ATC know your static system is not accurate? All they see is the
altitude reported from your transponder, which should be that which is
sensed at the static ports. They have no way to compare it against anything
else.
GPS altitude is not the same thing as barometric altitude. There are many
valid reasons why GPS altitude might differ by several hundred feet from
barometric altitude, yet both could be correct (just as TAS may differ
greatly from ground speed, yet both are correct, as they are measuring
different things). GPS altitude is only the same as barometric altitude on
the extremely rare day where the atmosphere perfectly matches a standard
atmosphere.
Kevin Horton
On Wed, 10 Oct 2007 06:38:25 -0700
"Kelly Patterson" <kbob@cox.net> wrote:
>
> My static ports were so far off I have had ATC ask me to turn off the
> altitude reporting on my transponder. Investigation showed the convex
> 'dome' of the Vans pop rivet was causing a vacuum as the air passed over.
I
> ground the rivet head flat (on a painted plane!) and the error went away.
>
> Use a GPS to see what your 'true' elevation is vs. the altimeter. If the
> altimeter reads high, consider this fix.
>
> Kelly Patterson
> RV-6A N716K
> PHX, AZ 185 hrs
>
>
> Time: 01:37:30 PM PST US
> From: "John D. Heath" <altoq@cebridge.net>
> Subject: Re: RV-List: Altimeter error - ASI question
>
>
> Doug,
>
> That one has to go to the shop. I can say though, airspeed indicator
errors
> are generally in the Pitot/Static system. The main trouble spot seems to
be
> the Static Port position and height above the surrounding surface. There
are
> some very elegant solutions available for static ports, but in my opinion
> they are just a fancy way to terminate the static tubing at skin level. A
> cheap pop rivet with enough length to install the tubing on and a washer
> placed between it and the head of the gun when it is installed has worked
> for me many times. The washer is to make the rivet head flat and without
the
> slight oval shape they normally have.
>
> John D.
>
Message 26
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| Subject: | Re: static port & altimeter error - ATC concerns |
The controller compares it against the altitude you were assigned on initia
l contact.
If your stated altitude differs from what your transponder states that you'
re at by 300 feet or more, the controller will question you to check altime
ter and tell you the difference. If the problem continues, the controller
can't use your mode C and will ask you to strangle it. The control facilit
y used to (may still do) update the their local altimeter setting into the
automation to adjust for pressure changes.
Marty
RV-7 (fitting interior systems)
Was a controller once, and young
> From: dale1rv6@comcast.net> To: rv-list@matronics.com> Subject: RE: RV-Li
st: Re: static port & altimeter error> Date: Wed, 10 Oct 2007 14:57:04 -040
In the US many or most approach control areas have radar altitude from the
ir> ground system, independent of your on board encoder. Enroute seems to b
e a> different story.> > Dale> > Do not archive> > -----Original Message---
--> From: owner-rv-list-server@matronics.com> [mailto:owner-rv-list-server@
matronics.com] On Behalf Of Kevin Horton> Sent: Wednesday, October 10, 2007
12:23 PM> To: rv-list@matronics.com> Subject: Re: RV-List: Re: static port
1@rogers.com>> > How would ATC know your static system is not accurate? All
they see is the> altitude reported from your transponder, which should be
that which is> sensed at the static ports. They have no way to compare it a
gainst anything> else.> > GPS altitude is not the same thing as barometric
altitude. There are many> valid reasons why GPS altitude might differ by se
veral hundred feet from> barometric altitude, yet both could be correct (ju
st as TAS may differ> greatly from ground speed, yet both are correct, as t
hey are measuring> different things). GPS altitude is only the same as baro
metric altitude on> the extremely rare day where the atmosphere perfectly m
atches a standard> atmosphere.> > Kevin Horton> > On Wed, 10 Oct 2007 06:38
:25 -0700> "Kelly Patterson" <kbob@cox.net> wrote:> > > --> RV-List message
posted by: "Kelly Patterson" <kbob@cox.net>> > > > My static ports were so
far off I have had ATC ask me to turn off the > > altitude reporting on my
transponder. Investigation showed the convex > > 'dome' of the Vans pop ri
vet was causing a vacuum as the air passed over.> I > > ground the rivet he
ad flat (on a painted plane!) and the error went away.> > > > Use a GPS to
see what your 'true' elevation is vs. the altimeter. If the > > altimeter r
eads high, consider this fix.> > > > Kelly Patterson> > RV-6A N716K> > PHX,
AZ 185 hrs> > > > > > Time: 01:37:30 PM PST US> > From: "John D. Heath" <a
ltoq@cebridge.net>> > Subject: Re: RV-List: Altimeter error - ASI question>
> > > > > Doug,> > > > That one has to go to the shop. I can say though, a
irspeed indicator> errors> > are generally in the Pitot/Static system. The
main trouble spot seems to> be> > the Static Port position and height above
the surrounding surface. There> are> > some very elegant solutions availab
le for static ports, but in my opinion> > they are just a fancy way to term
inate the static tubing at skin level. A> > cheap pop rivet with enough len
gth to install the tubing on and a washer> > placed between it and the head
of the gun when it is installed has worked> > for me many times. The washe
r is to make the rivet head flat and without> the> > slight oval shape they
=> > >
_________________________________________________________________
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challenge with star power.
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Message 27
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| Subject: | Re: static port & altimeter error - ATC concerns |
I know of NO FAA approach control with any kind of vertical altitude
radar. AFB Rapcons generally have GCA/PAR radar for approach guidance,
but that doesn't give a controller MSL altitude. The computer system
requires manual input of local altimeter setting. As stated, controller
must verify your encoder response, and if within 300 ft, it is
considered verified. Larger error, they have to have you turn off mode C.
Marty Helller wrote:
> The controller compares it against the altitude you were assigned on
> initial contact.
>
> If your stated altitude differs from what your transponder states that
> you're at by 300 feet or more, the controller will question you to
> check altimeter and tell you the difference. If the problem
> continues, the controller can't use your mode C and will ask you to
> strangle it. The control facility used to (may still do) update the
> their local altimeter setting into the automation to adjust for
> pressure changes.
>
> Marty
> RV-7 (fitting interior systems)
> Was a controller once, and young
>
> > From: dale1rv6@comcast.net
> > To: rv-list@matronics.com
> > Subject: RE: RV-List: Re: static port & altimeter error
> > Date: Wed, 10 Oct 2007 14:57:04 -0400
> >
> >
> > In the US many or most approach control areas have radar altitude
> from their
> > ground system, independent of your on board encoder. Enroute seems
> to be a
> > different story.
> >
> > Dale
> >
> > Do not archive
> >
> > -----Original Message-----
> > From: owner-rv-list-server@matronics.com
> > [mailto:owner-rv-list-server@matronics.com] On Behalf Of Kevin Horton
> > Sent: Wednesday, October 10, 2007 12:23 PM
> > To: rv-list@matronics.com
> > Subject: Re: RV-List: Re: static port & altimeter error
> >
> >
> > How would ATC know your static system is not accurate? All they see
> is the
> > altitude reported from your transponder, which should be that which is
> > sensed at the static ports. They have no way to compare it against
> anything
> > else.
> >
> > GPS altitude is not the same thing as barometric altitude. There are
> many
> > valid reasons why GPS altitude might differ by several hundred feet from
> > barometric altitude, yet both could be correct (just as TAS may differ
> > greatly from ground speed, yet both are correct, as they are measuring
> > different things). GPS altitude is only the same as barometric
> altitude on
> > the extremely rare day where the atmosphere perfectly matches a standard
> > atmosphere.
> >
> > Kevin Horton
> >
> > On Wed, 10 Oct 2007 06:38:25 -0700
> > "Kelly Patterson" <kbob@cox.net> wrote:
> >
> > >
> > > My static ports were so far off I have had ATC ask me to turn off the
> > > altitude reporting on my transponder. Investigation showed the convex
> > > 'dome' of the Vans pop rivet was causing a vacuum as the air
> passed over.
> > I
> > > ground the rivet head flat (on a painted plane!) and the error
> went away.
> > >
> > > Use a GPS to see what your 'true' elevation is vs. the altimeter.
> If the
> > > altimeter reads high, consider this fix.
> > >
> > > Kelly Patterson
> > > RV-6A N716K
> > > PHX, AZ 185 hrs
> > >
> > >
> > > Time: 01:37:30 PM PST US
> > > From: "John D. Heath" <altoq@cebridge.net>
> > > Subject: Re: RV-List: Altimeter error - ASI question
> > >
> > >
> > > Doug,
> > >
> > > That one has to go to the shop. I can say though, airspeed indicator
> > errors
> > > are generally in the Pitot/Static system. The main trouble spot
> seems to
> > be
> > > the Static Port position and height above the surrounding surface.
> There
> > are
> > > some very elegant solutions available for static ports, but in my
> opinion
> > > they are just a fancy way to terminate the static tubing at skin
> level. A
> > > cheap pop rivet with enough length to install the tubing on and a
> washer
> > > placed between it and the head of the gun when it is installed has
> worked
> > > for me many times. The washer is to make the rivet head flat and
> without
> > the
> > > slight oval shape they normally have.
> > >
> > > John D.
> > >============
> >
> >
> >
>
>
> ------------------------------------------------------------------------
> Climb to the top of the charts! Play Star Shuffle: the word scramble
> challenge with star power. Play Now!
> <http://club.live.com/star_shuffle.aspx?icid=starshuffle_wlmailtextlink_oct>
>
> *
>
>
> *
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