Today's Message Index:
----------------------
1. 05:10 AM - Re: Torque Tube Rod (Phillips, Jack)
2. 05:34 AM - Re: Pietenpol-List Digest: 8 Msgs - 12/08/04 (gerryy@airage.com (Gerry Yarrish))
3. 09:14 AM - External wind driven airplane generator on Ebay (questions answered) (N321TX@wmconnect.com)
4. 10:29 AM - P. F. Beck's Pietenpol NX747PF (Doc Mosher)
5. 11:44 AM - wind generator (walt evans)
6. 12:17 PM - personal wind generator (Michael D Cuy)
7. 12:53 PM - Re: wind generator (Phillips, Jack)
8. 03:15 PM - Re: wind generator (N321TX@wmconnect.com)
9. 04:05 PM - Re: Torque Tube Rod (David Paulsen)
10. 06:15 PM - aircraft repairman (Richard Navratil)
11. 06:31 PM - Re: aircraft repairman (alexms1@comcast.net)
12. 06:41 PM - Re: aircraft repairman (Isablcorky@aol.com)
13. 07:30 PM - Re: aircraft repairman (Bert Conoly)
14. 08:03 PM - Re: aircraft repairman (NEMuzzy)
Message 1
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Dave,
The guide pins don't have to be welded. However, just putting a hole
through the axle causes a stress concentration. My axle broke at the guide
pin, but my axle was only .120" wall. My new axle will be .188" wall, and I
will have it heat treated after welding to raise the yield strength to
105,000 psi, which will make it about 50% stronger (and 8 lbs lighter) than
a .25" wall axle non-heat treated. I am also going to change the design of
the guide pins to allow the holes through the axle to be on the neutral axis
so any stress concentrations caused by the holes will not matter.
Jack Phillips
Slowly beginning to repair NX899JP
-----Original Message-----
Why does the bolt or rod that some of us have put though our straight though
axles have to be welded? I'm probably missing something obvious but I don't
know what. The rod can't jump out of the axle because there is a nut at the
bottom that will prevent it from coming up through the torque tube. Thanks.
Dave Paulsen
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<span style='font-size:
10.0pt;font-family:Arial;color:navy'>Dave,
<span style='font-size:
10.0pt;font-family:Arial;color:navy'>
<span style='font-size:
10.0pt;font-family:Arial;color:navy'>The guide pins dont have to be
welded. However, just putting a hole through the axle causes a stress
concentration. My axle broke at the guide pin, but my axle was only .120
wall. My new axle will be .188 wall, and I will have it heat
treated after welding to raise the yield strength to 105,000 psi, which will
make it about 50% stronger (and 8 lbs lighter) than a .25 wall axle
non-heat treated. I am also going to change the design of the guide pins
to allow the holes through the axle to be on the neutral axis so any stress
concentrations caused by the holes will not matter.
<span style='font-size:
10.0pt;font-family:Arial;color:navy'>
<span style='font-size:
10.0pt;font-family:Arial;color:navy'>Jack Phillips
<span style='font-size:
10.0pt;font-family:Arial;color:navy'>Slowly beginning to repair NX899JP
<span style='font-size:
10.0pt;font-family:Arial;color:navy'>
<p class=MsoNormal style='margin-left:.5in'><span
style='font-size:10.0pt;font-family:Tahoma'>-----Original Message-----
<p class=MsoNormal style='margin-left:.5in'><span
style='font-size:10.0pt'>Why does the bolt or rod that some of us have put
though our straight though axles have to be welded? I'm probably missing
something obvious but I don't know what.The rodcan't jump out
of the axle because there is a nut at the bottom that will prevent it from
coming up through the torque tube. Thanks. Dave Paulsen
Message 2
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| Subject: | Re: Pietenpol-List Digest: 8 Msgs - 12/08/04 |
--> Pietenpol-List message posted by: gerryy@airage.com (Gerry Yarrish)
Wow, I am impressed. basically what we would need from such an illustrator
would be model structures and other related items. This art work I think is
much better related to our sister publication Flight Journal!
Take care,
GY
----- Original Message -----
From: "Pietenpol-List Digest Server" <pietenpol-list-digest@matronics.com>
Subject: Pietenpol-List Digest: 8 Msgs - 12/08/04
> *
>
> ==================================================
> Online Versions of Today's List Digest Archive
> ==================================================
>
> Today's complete Pietenpol-List Digest can also be found in either of the
> two Web Links listed below. The .html file includes the Digest formatted
> in HTML for viewing with a web browser and features Hyperlinked Indexes
> and Message Navigation. The .txt file includes the plain ASCII version
> of the Pietenpol-List Digest and can be viewed with a generic text editor
> such as Notepad or with a web browser.
>
> HTML Version:
>
>
http://www.matronics.com/digest/pietenpol-list/Digest.Pietenpol-List.2004-12-08.html
>
> Text Version:
>
>
http://www.matronics.com/digest/pietenpol-list/Digest.Pietenpol-List.2004-12-08.txt
>
>
> ================================================
> EMail Version of Today's List Digest Archive
> ================================================
>
>
> Pietenpol-List Digest Archive
> ---
> Total Messages Posted Wed 12/08/04: 8
>
>
> Today's Message Index:
> ----------------------
>
> 1. 04:15 AM - Re: Help Isabelle (Phillips, Jack)
> 2. 06:29 AM - what is level when flying (Douwe Blumberg)
> 3. 03:03 PM - Ward Aero external wind driven generator for sale
(N321TX@wmconnect.com)
> 4. 04:47 PM - Torque Tube Rod (David Paulsen)
> 5. 05:16 PM - Re: Ward Aero external wind driven generator for sale
(Steve Ruse)
> 6. 05:33 PM - Re: GN-1 flight characteristics (Land Shorter)
> 7. 08:07 PM - GN-1 flight characteristics (Ted Brousseau)
> 8. 11:04 PM - Re: GN-1 flight characteristics (Galen Hutcheson)
>
>
> ________________________________ Message 1
_____________________________________
>
>
> Time: 04:15:36 AM PST US
> Subject: RE: Pietenpol-List: Help Isabelle
> From: "Phillips, Jack" <jphillip@alarismed.com>
>
> --> Pietenpol-List message posted by: "Phillips, Jack"
<jphillip@alarismed.com>
>
> Check out Flightsuits.com. I bought their leather flying helmet with
> earphones built in and it works great. I've had a number of people
> comment on how clear my transmissions are, surprising for an open
> cockpit. Their address is:
> http://www.flightsuits.com/open_leather.html
> But I don't know if the Matronics website will let an internet address
> go through
>
> Jack Phillips, PE
> Sr. Manager, Disposables Product Development
> Clinical Technologies and Services
> Cardinal Health
> Creedmoor, NC
> (919) 528-5212
>
> -----Original Message-----
> From: Rcaprd@aol.com [mailto:Rcaprd@aol.com]
> Subject: Re: Pietenpol-List: Help Isabelle
>
> --> Pietenpol-List message posted by: Rcaprd@aol.com
>
> In a message dated 12/7/04 10:36:23 AM Central Standard Time,
> horzpool@goldengate.net writes:
>
> << I picked up an I Com A-23 >>
>
> I have an I Com A-5 (Com only), and I think it is just about the best
> radio
> on the market.
> Hey, while we're on this subject, has anyone ever found a headset /
> leather helmet incorporated together, like the W W 2 helmets ? Maybe
> even with
> ANR (Active Noise Reduction). It would be a perfect Pietenpol
> accessory.
> After a few hours of wearing the headset, and cloth helmet with the
> cutouts, my
> ears become
> very uncomfortable.
>
> Chuck G.
>
>
> ________________________________ Message 2
_____________________________________
>
>
> Time: 06:29:29 AM PST US
> From: "Douwe Blumberg" <douweblumberg@earthlink.net>
> Subject: Pietenpol-List: what is level when flying
>
> I'm building up my intake manifold (thanks for all the suggestions, got
everything
> needed from your sources!! what a great resource you all are!) I'm using
> a weber carb on my "A" engine and it should be as close to horizontal as
possible
> during normal flight.
>
> The plans call for a few degrees of downthrust already in the engine, and
then
> angling the carb forward even more and he says, he wants the carb level in
flight.
>
>
> What is horizontal on a piet during level flight. How many degrees down
would
> you say from the top longerons?
> ________________________________ Message 3
_____________________________________
>
>
> Time: 03:03:03 PM PST US
> From: N321TX@wmconnect.com
> Subject: Pietenpol-List: Ward Aero external wind driven generator for sale
>
> I just listed an external air-driven wind generator on Ebay, item number
> 4510914846.
>
> I had planned on using this on an Air Camper, but as some of you know, I
sold
> the Pietenpol a couple of months ago. These Ward Aero units aren't cheap,
and
> the "BUY IT NOW" price is $25 less than what I paid for it last year.
>
> My plans were to mount this to the belly of the Air Camper with a quick
> release device, allowing to use it only when needed to keep a battery
charged when
>
> taking a long trip. I figure, why fly around with extra drag and weight
when
> not needed, but this generator should be adequate to keep a 12 volt
battery
> charged that is feeding juice to a modest strobe power supply, a small
> transponder, a handheld radio, two turtle doves and three geese a laying.
>
> OK, I lied about the turtle doves and geese a laying, but the output seems
> pretty good to me.
>
> This unit appears to have been made in 1998.
>
> I also listed a Trimble Flitemate handheld GPS on Ebay and an altenator
for a
> Cherokee PA-280-140 having a Lycoming 0-320.
>
> Bid early and bid often.
>
> S.B.
>
>
> ________________________________ Message 4
_____________________________________
>
>
> Time: 04:47:23 PM PST US
> From: "David Paulsen" <dpaul@fidnet.com>
> Subject: Pietenpol-List: Torque Tube Rod
>
> Why does the bolt or rod that some of us have put though our straight
though axles
> have to be welded? I'm probably missing something obvious but I don't
know
> what. The rod can't jump out of the axle because there is a nut at the
bottom
> that will prevent it from coming up through the torque tube. Thanks.
Dave
> Paulsen
> ________________________________ Message 5
_____________________________________
>
>
> Time: 05:16:30 PM PST US
> From: "Steve Ruse" <steve@wotelectronics.com>
> Subject: RE: Pietenpol-List: Ward Aero external wind driven generator for
sale
>
> Yikes, I had no idea they were so expensive. I'm going to need one if I
end
> up buying the GN-1 I'm looking at, I'll have to keep an eye on this.
>
> Has anyone ever seen a homemade wind generator using a DC motor? Doesn't
> seem like it would be too hard at all if you could create a decent
propeller
> for it.
>
> Steve Ruse
> Dallas, TX
> -----Original Message-----
> From: owner-pietenpol-list-server@matronics.com
> [mailto:owner-pietenpol-list-server@matronics.com]On Behalf Of
> N321TX@wmconnect.com
> Sent: Wednesday, December 08, 2004 5:03 PM
> To: pietenpol-list@matronics.com
> Subject: Pietenpol-List: Ward Aero external wind driven generator for
sale
>
>
> I just listed an external air-driven wind generator on Ebay, item number
> 4510914846.
>
> I had planned on using this on an Air Camper, but as some of you know, I
> sold the Pietenpol a couple of months ago. These Ward Aero units aren't
> cheap, and the "BUY IT NOW" price is $25 less than what I paid for it last
> year.
>
> My plans were to mount this to the belly of the Air Camper with a quick
> release device, allowing to use it only when needed to keep a battery
> charged when taking a long trip. I figure, why fly around with extra drag
> and weight when not needed, but this generator should be adequate to keep
a
> 12 volt battery charged that is feeding juice to a modest strobe power
> supply, a small transponder, a handheld radio, two turtle doves and three
> geese a laying.
>
> OK, I lied about the turtle doves and geese a laying, but the output
seems
> pretty good to me.
>
> This unit appears to have been made in 1998.
>
> I also listed a Trimble Flitemate handheld GPS on Ebay and an altenator
> for a Cherokee PA-280-140 having a Lycoming 0-320.
>
> Bid early and bid often.
>
> S.B.
>
>
> ---
>
> ________________________________ Message 6
_____________________________________
>
>
> Time: 05:33:10 PM PST US
> DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws;
> s=s1024; d=yahoo.com;
>
b=gJdA/J0d7fMjCpppGVdzWtKue+ZMt48DmfwKa7qQFtb1y84RXxpEGIFyTcJsqrAZjOaL+0Dhk6
Txe1SqlP35FbaQn4eZZjTWRgppwn50c4GvpiMpzc9PmbG791Xhbj7GzLKIBM8q+AC4O2cDzp/1zZ
HfwP2UUkGuTmQ0MhFzDdI> ;
> From: Land Shorter <landshorter2@yahoo.com>
> Subject: RE: Pietenpol-List: GN-1 flight characteristics
>
> Hey Oscar, got those VGs on yet? :)
>
> Joa
> www.landshorter.com
>
>
> Steve Ruse <steve@wotelectronics.com> wrote:
> --> Pietenpol-List message posted by: "Steve Ruse"
>
> Thanks for the tips everyone, I've been checking the archives, there is
some
> great information in there. Basically it sounds like Pietenpols are pretty
> docile, but they tend to stall abruptly, which is aggravated by the fact
> that they have a high amount of drag which causes them to slow down
quickly.
> One question I didn't see answered though: How much of a difference does
the
> GN-1 airfoil make in the stall characteristic? Obviously you still are goi
ng
> to slow down fast, so I'm guessing it is still pretty abrupt. Does anyone
> typically round out with just a hair of power to keep it from slowing down
> so fast?
>
>
> ________________________________ Message 7
_____________________________________
>
>
> Time: 08:07:07 PM PST US
> From: "Ted Brousseau" <nfn00979@naples.net>
> Subject: Pietenpol-List: GN-1 flight characteristics
>
> --> Pietenpol-List message posted by: "Ted Brousseau"
<nfn00979@naples.net>
>
> Steve,
>
> You CAN carry a little power into the landing and it helps smooth it out.
> But, I don't recommend getting used to that procedure. What happens when
> you have to make a dead stick landing when the engine quits? I land
without
> power at least 75% of the time so that there won't be any surprises if I
> have to make a dead stick landing. (had a local EAA member do just that
> last year after flying young eagles. Totaled his aircraft. I asked him
how
> many power off landings he had made. He said one and he didn't like it so
> he never tried again. He landing in a smooth farm field and could have
kept
> it shiny side up if he had practiced). Like Chuck says, aim at a point on
> the ground, carry speed on the approach and roundout 6 inches above the
> ground and you will grease it on every time. How much speed on approach?
> Each one is different, but start with a high speed and slowly taper off
> until you find that sweet spot for your plane. Too much speed on approach
> will simply mean you float a little down the runway. Too little speed on
> approach will mean that when you pull back to roundout you test you
bungees
> because the descent is barely slowed down when it pancakes in.
>
> Happy landings.
>
> Ted
>
> > Time: 09:45:02 PM PST US
> > From: "Steve Ruse" <steve@wotelectronics.com>
> > Subject: RE: Pietenpol-List: GN-1 flight characteristics
> >
> > --> Pietenpol-List message posted by: "Steve Ruse"
> <steve@wotelectronics.com>
> >
> > Thanks for the tips everyone, I've been checking the archives, there is
> some
> > great information in there. Basically it sounds like Pietenpols are
> pretty
> > docile, but they tend to stall abruptly, which is aggravated by the fact
> > that they have a high amount of drag which causes them to slow down
> quickly.
> > One question I didn't see answered though: How much of a difference does
> the
> > GN-1 airfoil make in the stall characteristic? Obviously you still are
> going
> > to slow down fast, so I'm guessing it is still pretty abrupt. Does
anyone
> > typically round out with just a hair of power to keep it from slowing
down
> > so fast?
> >
> > Thanks again for the tips!
> >
> > Steve Ruse
> > Dallas, TX
> >
>
>
> ________________________________ Message 8
_____________________________________
>
>
> Time: 11:04:48 PM PST US
> DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws;
> s=s1024; d=yahoo.com;
>
b=uizU3gVNTFcO6G7z7yV4nYH+5hYx9SoeBpG6mDoD1sNYrUVDUdGO7+lJwu+fDA6kPzLdhNulja
iuLCQYJ7W7s0MzAA+jhI0xZaDYIkT2yAJkzEQy0HjtuluA5jiq7jgoEPFI7O8CEGNnrTDFcgGXON
9rFF3lZcoRY89feHh4NnM> ;
> From: Galen Hutcheson <wacopitts@yahoo.com>
> Subject: Re: Pietenpol-List: GN-1 flight characteristics
>
> --> Pietenpol-List message posted by: Galen Hutcheson
<wacopitts@yahoo.com>
>
> Steve,
>
> I haven't flown a Pietenpol as yet, but I do have
> hundreds of hours in antique biplanes. From what I
> hear and have read here, it sounds like the Piet wing
> causes the plane to handle much like that of a
> biplane. All drag and lift and very little glide.
> They are right about one thing, keep the nose down and
> your airspeed up...all the way down to the ground and
> then round out with a gentle touch. The second you
> pull the nose of the biplane up without power, the
> thing slows down like you have a drag chute on the
> back end. Round out too high, and you won't like the
> landing. If you see that you have rounded out too
> high, a quick burst on the throttle will help you
> salvage the landing though. Once you get used to this
> type of airplane, I think you will like it because you
> can control the landing much easier than you can in
> say a Cessna 172 that wants to keep floating forever.
> I loved the old biplanes and the way they flew. I
> often used what I call a powered slip into landing.
> Pretty frightening to watch from the ground, but I had
> complete control of the plane all the way to touchdown
> and could land on a dime almost everytime.
> Barnstorming small fields on hot windless days you
> needed that type of plane to do the job. I think the
> Piet will be a fun plane to fly so just get you a nice
> big GRASS airstrip or field and practice, practice,
> practice...
>
> Good luck and have lots of fun.
>
> Doc
>
> > >
> >
> >
> >
> >
> >
> >
> > Click on the
> > this
> > by the
> > Admin.
> >
> > Contributions
> > any other
> > Forums.
> >
> > http://www.matronics.com/subscription
> > http://www.matronics.com/FAQ/Pietenpol-List.htm
> > http://www.matronics.com/archives
> > http://www.matronics.com/photoshare
> > http://www.matronics.com/emaillists
> >
> >
> >
> >
> >
> >
>
>
> __________________________________
> http://info.mail.yahoo.com/mail_250
>
>
Message 3
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| Subject: | External wind driven airplane generator on Ebay (questions |
answered)
I've had several off-list questions about the generator I have listed on
Ebay. I tried to add additional pictures to address the questions, but it seems
once someone has placed a bid on an item, you can't add a picture. I'm happy to
send extra picture if you'll contact me through the auction. I think it would
be an easy task to make a quick release plate for this. I have see belly pods
on Avid's and Kitfoxes that were bulkier and heavier and I believe this would
be an easier install than a belly (cargo) pod on an Avid.
#1. The unit stands about 11 inches tall. That would make it hang about 10
inches below the belly of an airplane.
#2. It would best be mounted in the slipstream under the belly. The
instruction manual suggests it cranks out 10 amps at 80 mph, and that can be achieved
under the belly of an Air Camper, unless you are at idle engine RPM.
#3. The prop on the generator is made from aluminum and it looks to be cast.
The "hub" is machined so should not slip on the shaft. The blade looks be
about 5 inches on each side.
#4. I think the best place to mount would be directly under the passenger and
some kind of plate on both sides of the wooden floor would be needed to
provide reinforcement. Doubling the plywood with an extra layer should do, or two
plates of aluminum about 8 inches wide and 10 inches long should work.
#5. I was told from the person who purchased it at an estate auction in
Michigan last year that it appears this generator has never been in service. The
original owner passed away and it was in a hanger with a project airplane. The
only paperwork that came with this was the 8 page manual and on the front it
states "FAA/PMA" thus the reason these things are expensive when new. The manual
is dated 1998, so I suspect this generator is 6 years old. I think it would
provide years of service and it looks like it would be easy to put new brushes
in it, should they ever become worn.
Message 4
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| Subject: | P. F. Beck's Pietenpol NX747PF |
--> Pietenpol-List message posted by: Doc Mosher <docshop@tds.net>
In the new Winter 2004 issue of Sport Aviation Association's "To Fly"
magazine, there is
an article by P. F. Beck, builder of Pietenpol NX747PF, with several color
photos.
The title of the article is "My Low-Cost Pietenpol."
Beck's Piety is really a classic - plywood forward fuselage, yellow wings
and tail, BHP
tailwheel, wire wheels, and spotfaced aluminum cowling. He uses a Corvair
engine.
As he says, the machine cost him a total of $6800, and he explains how to
do it.
"To Fly" magazine is one reason to join SAA. Another is the June gathering
at Urbana.
Doc Mosher
Message 5
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|
For someone who is using a battery anyway, should be able to use a very small alternator
from a car to mount a prop and mounting to.
walt evans
NX140DL
Message 6
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| Subject: | personal wind generator |
--> Pietenpol-List message posted by: Michael D Cuy <Michael.D.Cuy@grc.nasa.gov>
Guys--- I carry a personal wind generator with me every time I fly my
Pietenpol. In fact, my wife says that
I carry it with me even when I'm not flying.
One really nice thing about flying open cockpit is that even if you
generate some wind, nobody knows the better---even
your front seat passenger.
And to counterbalance that last observation let me remind you to not only
be selective about the weight of your passenger
for performance considerations, but to evaluate them on their hygiene
merits as well. One day while up in Wisconsin I was
flattered to be able to give several female passengers a ride. The first
lady had been camping and evidently had not washed
her hair in a while. You can smell that in flight, belive it or not.
I was extremely fortunate on my last ride that morning as my passenger was
a very attractive brunette (but happily married) who
was freshly showered and shampooed. Not only was she very pleasant but
her shampoo and body wash aromas swirled about
the edges of my windshield into my nose as we taxied out for
takeoff. What a beautiful head of hair she had too as we accelerated
for takeoff----this was going to turn her day into a bad hair day, but what
the heck---she wanted the ride in the worst way.
To finish up the story, this lady told me that what her and her husband
really wanted was a Stearman but I told her how much it cost
to build and fly the Pietenpol and she was hooked. She was going home to
tell her husband all about Pietenpol Air Campers-----and
I added------"and you know there is one less wing to clean on a Pietenpol
and it doesn't get in the way when you are
trying to wave to Aunt Emma and Uncle Steve while circling over their house."
Mike C.
do not archive
Message 7
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I have an 18 Amp-Hour battery on my Pietenpol. No generator. I can
recharge it on the ground wiht a trickle charger, but so far, in 8 hours
of flying using the comm radio on every flight, and occasionally using
the Ah-Ooooga horn, I have not had to recharge the battery yet. I have
not been running the transponder becasue i have not yet felt like
shelling out the $300 required to get the encoder calibrated, so that
will probably increase the electrical load considerably.
Jack Phillips
Raleigh, NC
-----Original Message-----
For someone who is using a battery anyway, should be able to use a very
small alternator from a car to mount a prop and mounting to.
walt evans
NX140DL
Message 8
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| Subject: | Re: wind generator |
A machinist friend on mine in El Paso tried making his own homemade unit,
first using an alternator from a Chrysler (which I believe is basically the same
thing found on many certified airplanes) but he removed it from his
experimental airplane after a few weeks. The first problem was the Chrysler alternator
had a diameter about the size of a large can of Folgers coffee. He said the
extra drag from hanging such a large object with massive frontal area created so
much drag, it caused problems. The second problem was when the alternator
locked up.
He then tried using an alternator from (memory escapes me, but it was either
from a Subaru or a Toyota.) He tried the Japanese alternator because it had a
smaller frontal diameter. The Japanese unit had less drag, but still, the
alternator locked up after a short period.
Upon his investigation after disassembly of both alternators, he determined
that the wind load placed on the bearings not designed for 80 MPH frontal loads
caused the failure. He switched to the version I have, and I never recall him
having problems with the unit that was designed for this purpose.
Of the several advantages of the Ward Aero Wind Driven Generator is the small
frontal area. Instead of hanging something from the belly of an airplane that
is the size of a large can of Folgers coffee, the Ward Aero unit is about the
size of a Foster's Lager or a Colorado Cool-Aid. I suspect the Ward Aero
aviation generator is engineered for different loads and stresses since it is
rated 250 mph VNE.
Message 9
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| Subject: | Re: Torque Tube Rod |
Thanks Jack. Perhaps I will try to find two 8 inch pieces of pipe that can slip
tightly into my axle - position them so there's about 4 inches of pipe on either
side of the holes - and drill them through. This will double the thickness
of the axle in that critical area acting as reinforcement in case there is
a exceptionally hard landing.
Dave Paulsen
----- Original Message -----
From: Phillips, Jack
To: 'pietenpol-list@matronics.com'
Sent: Thursday, December 09, 2004 7:10 AM
Subject: RE: Pietenpol-List: Torque Tube Rod
Dave,
The guide pins don't have to be welded. However, just putting a hole through
the axle causes a stress concentration. My axle broke at the guide pin, but
my axle was only .120" wall. My new axle will be .188" wall, and I will have
it heat treated after welding to raise the yield strength to 105,000 psi, which
will make it about 50% stronger (and 8 lbs lighter) than a .25" wall axle non-heat
treated. I am also going to change the design of the guide pins to allow
the holes through the axle to be on the neutral axis so any stress concentrations
caused by the holes will not matter.
Jack Phillips
Slowly beginning to repair NX899JP
-----Original Message-----
Why does the bolt or rod that some of us have put though our straight though
axles have to be welded? I'm probably missing something obvious but I don't know
what. The rod can't jump out of the axle because there is a nut at the bottom
that will prevent it from coming up through the torque tube. Thanks. Dave
Paulsen
Message 10
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| Subject: | aircraft repairman |
I don't recall seeing this subject discussed before. I have had my application
form for the Aircraft Repairman sitting around and finally called about getting
the rating. The examiner gave me an appointment for next week and told me
to bring in all logs and be prepaired to discuss construction and that the oral
interview should take about an hour. Has anyone else had a similar going over?
Do I just live in a area with very strict standards?
Dick N
Message 11
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| Subject: | Re: aircraft repairman |
Richard,
I have a Repair-man's certificate for my old RV-3 and one for my RV-6. Mine were
issued upon request when I applied for the Air worthiness certificate. No
quizzing of any sort. Hope you get this worked out.
Alex S.
-------------- Original message --------------
I don't recall seeing this subject discussed before. I have had my application
form for the Aircraft Repairman sitting around and finally called about getting
the rating. The examiner gave me an appointment for next week and told me
to bring in all logs and be prepaired to discuss construction and that the oral
interview should take about an hour. Has anyone else had a similar going over?
Do I just live in a area with very strict standards?
Dick N
Richard,
I have a Repair-man's certificate formy old RV-3 and one for my RV-6. Mine were
issued upon request when I applied for the Air worthiness certificate. No quizzing
of any sort. Hope you get this worked out.
Alex S.
-------------- Original message --------------
<META content="MSHTML 6.00.2900.2523" name=GENERATOR>
<STYLE></STYLE>
I don't recall seeing this subjectdiscussed before. I have had my application form
for the Aircraft Repairman sitting around and finally called about getting
the rating. The examiner gave me an appointment for next week and told me to
bring in all logs and be prepaired to discuss construction and that the oral interview
should take about an hour. Has anyone else had a similar going over?
Do I just live in a area with very strict standards?
Dick N
Message 12
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| Subject: | Re: aircraft repairman |
Something some of us older Pieters learned during the wars, " he who asks
questions, gets trouble "
Get a DAR
Message 13
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| Subject: | Re: aircraft repairman |
Dick. It sounds like you're just dealing with typical beaurocratic FAA crap.
I thought that typically one could simply apply for the repairman certificate
at the time of inspection/airworthiness certificate. That's what I am doing.
You should ask that "examiner" how many airplanes he's built and flown. Tell him
to call you Monday for an appointment so he can block out an hour of HIS time,
come to your hangar, and you'll give him an hours instruction on how to build
an airplane. Tell him you'll even do it at no charge - cause your a nice
guy.
I'll send you the rest of MY ADVICE off list.
See ya,
Bert
----- Original Message -----
From: Richard Navratil
To: pietenpol-list@matronics.com
Sent: Thursday, December 09, 2004 9:10 PM
Subject: Pietenpol-List: aircraft repairman
I don't recall seeing this subject discussed before. I have had my application
form for the Aircraft Repairman sitting around and finally called about getting
the rating. The examiner gave me an appointment for next week and told me
to bring in all logs and be prepaired to discuss construction and that the oral
interview should take about an hour. Has anyone else had a similar going
over? Do I just live in a area with very strict standards?
Dick N
Message 14
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| Subject: | aircraft repairman |
I kept a photo log and web page of my construction process. (Make sure you
have a few pictures with yourself in it, doing the work!) Links to the
pages were included with the paperwork. There was also a day-by-day log for
the first half of the project (where you are making lots of parts).
The inspector stated that it was obvious that I did the work and was
qualified to get the repairman's certificate. He completed the paperwork
for the repairnman's certificate immediately following the airframe
inspection, and the card showed up a month or two later. You don't need the
card until it comes time for the condition inspection.
The concern is that there are people who have purchased projects that do not
have the complete skillset required to do a conditional inspection. If you
have reasonable documentation that you did the work, there should be no
concerns. If you have no documentation, they may be looking for enough
demonstration of knowledge about the building process.
-Norm
----- Original Message -----
From: Richard Navratil
To: pietenpol-list@matronics.com
Sent: Thursday, December 09, 2004 9:10 PM
Subject: Pietenpol-List: aircraft repairman
I don't recall seeing this subject discussed before. I have had my
application form for the Aircraft Repairman sitting around and finally
called about getting the rating. The examiner gave me an appointment for
next week and told me to bring in all logs and be prepaired to discuss
construction and that the oral interview should take about an hour. Has
anyone else had a similar going over? Do I just live in a area with very
strict standards?
Dick N
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