Today's Message Index:
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1. 06:17 AM - Re: Re: Fw: Flying with a level (FLYaDIVE)
2. 10:42 AM - Re: Re: Fw: Flying with a level (Gary L Vogt)
3. 11:31 AM - What a drag . . . (Gary L Vogt)
4. 02:09 PM - Re: Fw: Flying with a level (Doug Doty)
5. 02:25 PM - Re: Fw: Flying with a level (Doug Doty)
6. 05:07 PM - Re: Re: Fw: Flying with a level (Bob Hodo)
7. 05:26 PM - Re: What a drag . . . (Bob Hodo)
8. 07:27 PM - Re: Fw: Flying with a level (Doug Doty)
9. 08:08 PM - Re: Re: Fw: Flying with a level (Bob Hodo)
Message 1
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| Subject: | Re: Fwd: Flying with a level |
Doug:
Say hello and thank you to your Son from me.
Barry
USAF
On Thu, Nov 24, 2011 at 11:40 PM, Doug Doty <39marinette@gmail.com> wrote:
> >
>
> I am always looking for some place to go so maybe I'll swing over that way
> and compare notes some day, I am going to Florida to get warm soon and
> Louisiana to visit a son healing from an Afghanistan wound a while back. I
> look at it.
>
> Doug...
>
> --------
> 1977 AA5B N28454, Fuel Totalizer, Lopresti Nose, Red Rudder Cap, 4 cyl.
> egt, stock otherwise.
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=359147#359147
>
>
Message 2
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| Subject: | Re: Fwd: Flying with a level |
So, Doug, tell us about your dragster.
I've been looking for a C6 chassis to go under a C3. Lots of cutting and fabricating.
That project will have wait until the IO360 is finished.
Gary
Sent from my iPad
On Nov 24, 2011, at 12:25 PM, "Doug Doty" <39marinette@gmail.com> wrote:
>
> You are right about Lurkers. I drag raced for 25 years and crave speed and efficiency,
so don't think I am not enjoying the exchange of information, I am dying
to pick up a little and smoke a certain mooney !!!!!
>
> --------
> 1977 AA5B N28454, Fuel Totalizer, Lopresti Nose, Red Rudder Cap, 4 cyl. egt,
stock otherwise.
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=359129#359129
>
>
>
>
>
>
>
>
>
>
Message 3
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| Subject: | What a drag . . . |
BH wrote, "When my cheetah is strait and level at 140 knots, the canopy rails are
more than 1 degree ( 1.27 is my first measurement ) nose down. That means
that rear section is 8.27 degrees nose down."
Now ya got me thinking again.
When 626 (the Project X plane) gets out of annual, I'm going to make some more
detailed measurements on the wing incident. If zero lift occurs somewhere between
2 and 5 degrees down AOA, it MIGHT be possible to determine the lift on the
fuselage.
Also, if max L/D occurs at somewhere between 2 and 5 degrees up AOA, now all we
need is a device on the plane that finds relative AOA.
As a system, the vertical and horizontal lift and drag need to be considered. The
lift and drag of the system seems dependent on loading, flap position, trim
drag, cooling drag, aircraft weight, and Reynolds number (i.e., aircraft speed).
BH, can you make a mathematical curve fit to the rib you have? It might be possible
to extrapolate data from existing NACA airfoil data. IF we know the top
is a 64-415, then that shape we know.
BTW. The P-51 uses an airfoil similar to a 66-415. Same basic shape as a 64-415
but with the max thickness at 60% cord instead of 40% cord.
Gary
Sent from my iPad
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| Subject: | Re: Fwd: Flying with a level |
Started with big block Camaro's in the middle 80's then into the 5.0 craze in the
middle 90's and back to big Chevys in Camaro's in the 05' and out and done
in 08' Here is a couple of pic's of the last 8.5 outlaw car. I built for the 08
season. It made 1098 hp. with 615 ci. and conventional heads from a "Texas pro
stock class" head and intake custom shop on the right coast. Lucky to have
enough money left the have a couple planes and a hanger after the racing, it was
fun but a major drain on finances.
--------
1977 AA5B N28454, Fuel Totalizer, Lopresti Nose, Red Rudder Cap, 4 cyl. egt, stock
otherwise.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=359351#359351
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| Subject: | Re: Fwd: Flying with a level |
Back to airplanes, On my tiger during preflight today I was looking a lot harder
at a few thing than normal as a result of this and the pther threads and I
found that if I aligned the left elevator tip on the front balance portion with
the HS that my right side rode high maybe as much as 1/2" in the same far forward
spot adjacent to the HS on the right side. Is this normal or do I need to
get after figuring this out asap. ???????????????? It flys flat and level with
no trim in the alierons buy has a good bit of trim tab bent to the right on
the rudder... Help....
--------
1977 AA5B N28454, Fuel Totalizer, Lopresti Nose, Red Rudder Cap, 4 cyl. egt, stock
otherwise.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=359353#359353
Message 6
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| Subject: | Re: Fwd: Flying with a level |
Doug asked:
I found that if I aligned the left elevator tip on the front balance =0Apo
rtion with the HS that my right side rode high maybe as much as 1/2" =0Ain
the same far forward spot adjacent to the HS on the right side. Is =0Athis
normal or do I need to get after figuring this out asap. ?
You have a typical split elevator.- 1/2 inch is pretty bad.- From a str
uctural standpoint it is the possibility of one side flopping around that i
s most concerning.- I doubt that if you look aft while flying you will se
e it doing that, however.
If you go to aya.org and click on "Maintenance Hanger" then AA5 Maintenance
manual then chapter 27 and when the pdf downloads go about 60% of the way
down to Fig 404 in Chapter 27-3-1 on g=page 408 you will see Item 24. BEL
L CRANK and item 30. TORQUE TUBE.
Basically there is a tube in a tube, and a hole drilled through both walls
of both tubes and a bolt which is actually a pin that keeps the two aligned
.- They wear over 30 years or so.- And it is the slop more than the mis
alignment that is problematic.- The first cure is an oversize bolt from F
letchair or possibly Ken Blackman that will go inside the hole after it is
redrilled to the proper next step up in size.
The problem is that you want perfect alignment before redrilling, and it is
just best to let one of the guru's who have the reamer and the experience
to just get it perfect.
Now Doug, I do a lot of my own maintenance on a lot of things including my
cheetah.- But I gladly chose to let Bob Steward do mine.- (He supervise
s and trains and approves the things I do anyway, and for a while was urgin
g me to get my A&P.)
I don't think it is dangerous to fly as it is, but it is not something that
can be ignored either.- You WILL get it fixed, it might as well be right
away and might as well be done by an expert.
shortcut to the .pdf at AYA.org
http://www.aya.org/s/358/images/editor_documents/content/The%20maintenance%
20Manual%20is%20an%20essential%20%28and%20legally%20required/27.pdf
That's my 2 cents...
Bob Hodo
GADsden, AL
Message 7
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| Subject: | Re: What a drag . . . |
Gary >>>- Now ya got me thinking again.
BH>>> I can't imagine you stop thinking very often...
Gary>>> BH, can you make a mathematical curve fit to the rib you have?
BH>>>- I might have had that skill set 35 years ago, not sure, but I cert
ainly don't have it now.-
Gary, when I stare at that foil from the side, with my chair rail on the wa
ll behind it like the oncoming airstream, I can see it not being too bad wi
th the flat aft half parallel to the stream, and the front section more tha
n 4 degrees up from that, and the big drooping front edge in its slickest p
rofile.- But that must happen down around 100 to 105 knots.
At 140 knots on the cheetah the flat aft half is more than 3 degrees nose d
own, and the front flat half is only about 1 degree nose up.- To my eye i
t looks like the wing cannot possibly be lifting any longer, but apparently
that big camber on top is still cranking pretty good.- By this time howe
ver, we have a pretty blunt leading edge that kills a lot of bugs (and I th
ink two hummingbirds on the way to Pennsylvania!)
I can trace you a copy of the rib on paper and send it to you to hang on yo
ur wall next to your TV if you like.- ( Along with some pieces to stick o
n the front to change the shape as I would like!)
Bob Hodo
GADsden, AL
Message 8
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| Subject: | Re: Fwd: Flying with a level |
Flew today and the weather is going to be lousey for a few days starting at this
very moment as I hear the rain on the skylites, so I will pull the tail cone
tomorrow morning and get into it, it needs the jack screw on the trim cleaned
up anyway, not feeling as smooth as it should. My IA is just across the taxiway
and always happy to help. I can switch places with the 150 and it needs to
be in front anyway as it is going away for a few days for some maint. too. I'll
get it taken care of before I fly it again. I just like fixing every thing
I can find asap, especially on a plane like this that is still new to me and not
much history with it yet. Might even get a few pic's along the way.
--------
1977 AA5B N28454, Fuel Totalizer, Lopresti Nose, Red Rudder Cap, 4 cyl. egt, stock
otherwise.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=359375#359375
Message 9
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| Subject: | Re: Fwd: Flying with a level |
Getting to it is no problem.- It is very likely that only one side is wal
lowed out.- But you won't necessarily need to go up from whatever the cur
rent standard size is to the next standard size.- Garner Rice (Fletchair,
1-800-FAWINGS) should have in stock a special size bolt that they order ju
st for this.
But you need a special reamer to do it right, not just a drill.
Anyway, your goal of course is for them both to sit with the leading edge o
f the el tips matching the leading edge of the horizontal stabilizer at the
same time with near zero play in either elevator.
Also, since you are a tiger, you should be able to turn around in cruise fl
ight and see them flying like that.- If your plane is fast, you will see
the el tips begin to rise above the HS leading edge beginning around 140 kn
ots or so. (Made worse by using the cheetah trick of carrying some extra wa
ter as rear ballast.)
Good luck, and keep us posted on what you find.
BH
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