Today's Message Index:
----------------------
1. 05:40 AM - Re: Elevators (Don Emch)
2. 06:48 AM - Re: Re: Elevators (Ed G.)
3. 07:25 AM - Re: Aircamper Valve Covers (PatrickW)
4. 09:13 AM - Re: Re: Elevators (Dick Navratil)
5. 10:34 AM - Re: Re: Elevators (Dave and Connie)
6. 12:37 PM - Re: aileron droop okay (Barry Davis)
7. 01:08 PM - Re: aileron droop okay (DJ Vegh)
8. 01:51 PM - Think you've landed in high crosswinds? (walt evans)
9. 05:39 PM - Re: aileron droop okay (Rcaprd@aol.com)
10. 07:20 PM - Re: Re: Elevators (Steve Singleton)
Message 1
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Hello Steve,
I really don't think there should be any difference in where you start the taper.
I'll bet the plane won't know the difference! Birch plywood is slightly heavier,
slightly stiffer, and I think slightly less expensive. I used mahogany
throughout with the exception of the wing rib gussets. No real reason to use
one versus the other, I guess. I made the ribs first and afterwards realized
I liked the look of the mahogany for the rest of the airframe. Preference,
I guess. There is other plywood out there but be careful and know what you're
looking for. I used all Wick's and Aircraft Spruce but only because I didn't
know what to look for. Other guys on the list have used other materials with
great success, just be careful and research it if you decide on that route.
Don't know about others, but I get a good feeling in flying along and knowing
that the nuts, bolts, and chunks of wood are "aircraft quality". Passengers probably
appreciate it too!!
Don Emch
NX899DE
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=83727#83727
Message 2
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A lot of builders use marine grade mahogany plywoood which is less
expensive than aircraft grade and depending on your location might be
locally available. Just be sure to sand off the sealer coating before
glueing, especially with the birch plywood. It helps let the glue
penetrate the grain of the wood. I've heard that tests say it doesn't
make any difference with T-88 but I find that hard to believe so I
always sand it. Ed G.
----- Original Message -----
From: Don Emch<mailto:EmchAir@aol.com>
To: pietenpol-list@matronics.com<mailto:pietenpol-list@matronics.com>
Sent: Wednesday, December 27, 2006 8:40 AM
Subject: Pietenpol-List: Re: Elevators
<EmchAir@aol.com<mailto:EmchAir@aol.com>>
Hello Steve,
I really don't think there should be any difference in where you start
the taper. I'll bet the plane won't know the difference! Birch plywood
is slightly heavier, slightly stiffer, and I think slightly less
expensive. I used mahogany throughout with the exception of the wing
rib gussets. No real reason to use one versus the other, I guess. I
made the ribs first and afterwards realized I liked the look of the
mahogany for the rest of the airframe. Preference, I guess. There is
other plywood out there but be careful and know what you're looking for.
I used all Wick's and Aircraft Spruce but only because I didn't know
what to look for. Other guys on the list have used other materials with
great success, just be careful and research it if you decide on that
route. Don't know about others, but I get a good feeling in flying
along and knowing that the nuts, bolts, and chunks of wood are "aircraft
quality". Passengers probably appreciate it too!!
Don Emch
NX899DE
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=83727#83727<http://forums.m
atronics.com/viewtopic.php?p=83727#83727>
http://www.matronics.com/Navigator?Pietenpol-List<http://www.matronics.co
m/Navigator?Pietenpol-List>
Message 3
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| Subject: | Re: Aircamper Valve Covers |
ggower_99(at)yahoo.com wrote:
> We do aluminum castings in our factory...
>
> Could be with "Aircamper" and another ones later with "FlyCorvair".....
>
As a Zodiac/Corvair builder (considering a Piet for a 2nd plane), this idea really
appeals to me...
- PatrickW
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=83757#83757
Message 4
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Steve
Many of us have used Okume plywood, available from Wicks or ACS. Okume is
much lighter and cheaper but not quite as strong as aircraft grade. ACS
cataloug has a good description of the properties of plywoods.
Dick N.
----- Original Message -----
From: "Steve Singleton" <slsingleton@cvalley.net>
Sent: Tuesday, December 26, 2006 9:54 PM
Subject: Re: Pietenpol-List: Re: Elevators
> <slsingleton@cvalley.net>
>
> Thanks Don. I fitted one together tapering from the center beam but like
> the idea of holding the thickness until farther back. Another question-is
> there any structural difference between Birch plywood and mahogany. I had
> in mind to use mahogany but may go with birch if there is a big price
> difference. I know this must be an age old question but is there any where
> else other than Wicks or spruce to buy plywood? Thanks. Steve Singleton
> ----- Original Message -----
> From: "Don Emch" <EmchAir@aol.com>
> To: <pietenpol-list@matronics.com>
> Sent: Tuesday, December 26, 2006 8:41 PM
> Subject: Pietenpol-List: Re: Elevators
>
>
>>
>> I think I kept mine the same thickness until the last few inches and then
>> tried to taper it down to nicely match the trailing edge piece. It
>> probably doesn't matter much, but I guess I tried to err on the side of
>> holding that thickness for rigidity. The elevators and rudders are
>> fairly flexible when they are complete. In flight, however I'm sure
>> there isn't much flexing.
>> Don Emch
>> NX899DE
>> P.S. Definitely the time of year that I miss building!
>>
>>
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=83681#83681
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
>
>
Message 5
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At 12:12 PM 12/27/2006, Dick Navratil wrote:
One source for Okume is places that cater to stitch and glue boat
builders. I purchased from Noah's Marine in Toronto when I built my
Chesapeake 17 kayak. Bringing it back into the US was no problem.
Dave
><horzpool@goldengate.net>
>Steve
>Many of us have used Okume plywood, available from Wicks or ACS. Okume is
>much lighter and cheaper but not quite as strong as aircraft grade. ACS
>cataloug has a good description of the properties of plywoods.
>Dick N.
>----- Original Message ----- From: "Steve Singleton" <slsingleton@cvalley.net>
>To: <pietenpol-list@matronics.com>
>Sent: Tuesday, December 26, 2006 9:54 PM
>Subject: Re: Pietenpol-List: Re: Elevators
Message 6
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| Subject: | Re: aileron droop okay |
On an L2 Taylorcraft I bought my son when he turned 16, the ailerons
were trimmed to have a droop of about a 1/4". After listening to an old
mechanic and Cleveland Air Racer, he said to put in 1/4" up trim in both
ailerons. We did and our cruise picked up around 5 MPH. We could not
tell any difference in takeoff ground run, but I suspect it increased it
some. Our grass strip is 2350' and the Taylorcraft only used a fraction
of it anyway.
Barry
----- Original Message -----
From: Cuy, Michael D. (GRC-RXD0)[ASRC]
To: pietenpol-list@matronics.com
Sent: Tuesday, December 26, 2006 1:17 PM
Subject: Pietenpol-List: aileron droop okay
Oscar-- my IA and friend 78 year old Don .......
Message 7
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| Subject: | Re: aileron droop okay |
rigging ailerons up slightly will also reduce the tendancy for tip
stalling.
DJ
----- Original Message -----
From: Barry Davis
To: pietenpol-list@matronics.com
Sent: Wednesday, December 27, 2006 1:36 PM
Subject: Re: Pietenpol-List: aileron droop okay
On an L2 Taylorcraft I bought my son when he turned 16, the ailerons
were trimmed to have a droop of about a 1/4". After listening to an old
mechanic and Cleveland Air Racer, he said to put in 1/4" up trim in both
ailerons. We did and our cruise picked up around 5 MPH. We could not
tell any difference in takeoff ground run, but I suspect it increased it
some. Our grass strip is 2350' and the Taylorcraft only used a fraction
of it anyway.
Barry
----- Original Message -----
From: Cuy, Michael D. (GRC-RXD0)[ASRC]
To: pietenpol-list@matronics.com
Sent: Tuesday, December 26, 2006 1:17 PM
Subject: Pietenpol-List: aileron droop okay
Oscar-- my IA and friend 78 year old Don .......
href="http://www.matronics.com/Navigator?Pietenpol-List">http://www.mat
ronics.com/Navigator?Pietenpol-List
href="http://forums.matronics.com">http://forums.matronics.com
Message 8
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| Subject: | Think you've landed in high crosswinds? |
Check out this link.
Take note of the trees in the foreground.
http://www.micom.net/oops/A321CrossWind.wmv
hope this works
do not archive
walt evans
NX140DL
"Put your wealth in knowledge, and no one can ever take it from you"
Ben Franklin
Message 9
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| Subject: | Re: aileron droop okay |
In a message dated 12/27/2006 4:10:13 P.M. Eastern Standard Time,
dj@veghdesign.com writes:
rigging ailerons up slightly will also reduce the tendancy for tip stalling.
DJ
Yep, it's kinda like artificial Washout.
Chuck G.
Message 10
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I'll look into the Okume and also see if I can find a Marine supply house.
Worked most of today on the tail and have it all ready to glue togeather
except the rudder and hopefully will get that done tomorrow. I know i'm just
a beginer at this but it's sure neat to see all this layed out and ready to
glue up. Steve S
----- Original Message -----
From: "Dave and Connie" <dmatt@frontiernet.net>
Sent: Wednesday, December 27, 2006 12:12 PM
Subject: Re: Pietenpol-List: Re: Elevators
> <dmatt@frontiernet.net>
>
> At 12:12 PM 12/27/2006, Dick Navratil wrote:
> One source for Okume is places that cater to stitch and glue boat
> builders. I purchased from Noah's Marine in Toronto when I built my
> Chesapeake 17 kayak. Bringing it back into the US was no problem.
>
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