Today's Message Index:
----------------------
1. 03:41 AM - Re: Avionics package (helspersew@aol.com)
2. 03:52 AM - Re: Fuselage Sides (Dangerous Dave)
3. 03:59 AM - Re: Big and Tall Steel Fuselage (Dangerous Dave)
4. 06:05 AM - Re: Fuselage Sides (amsafetyc@aol.com)
5. 07:40 AM - Re: Avionics package (bender)
6. 09:02 AM - Metal question (TOM STINEMETZE)
7. 09:41 AM - Re: Metal question (Michael Perez)
8. 10:40 AM - Re: Metal question (Ryan Mueller)
9. 10:41 AM - airworthiness aplication (skellytown flyer)
10. 10:47 AM - Re: Metal question (Mr. Craig)
11. 11:11 AM - Re: Metal question (TOM STINEMETZE)
12. 11:12 AM - Re: Metal question (TOM STINEMETZE)
13. 01:30 PM - Re: Avionics package (JohnC)
14. 01:51 PM - Re: Metal question (Bill Church)
15. 02:19 PM - Re: Avionics package (bender)
16. 02:27 PM - Re: Fuselage Sides (Bill Church)
17. 02:35 PM - Re: Avionics package (Bill Church)
18. 02:53 PM - Re: Metal question (TOM STINEMETZE)
19. 03:01 PM - Re: airworthiness aplication (skellytown flyer)
20. 03:26 PM - Re: Re: Metal question (Dave Abramson)
21. 03:44 PM - Re: Re: Metal question (Gboothe5)
22. 05:19 PM - metal prop re-pitching (TriScout)
23. 05:52 PM - Re: Big and Tall Steel Fuselage (kevinpurtee)
24. 05:52 PM - Re: Fuselage Sides (Mr. Craig)
25. 05:53 PM - Re: Does life get any better? (kevinpurtee)
26. 05:56 PM - Re: 2 piets at breakfast this morning (kevinpurtee)
27. 05:58 PM - Re: Happy Veteran's Day (kevinpurtee)
28. 06:09 PM - Re: Fuselage Sides2 (jorge lizarraga)
29. 06:17 PM - Re: Big and Tall Steel Fuselage (Mr. Craig)
30. 08:11 PM - Re: Re: Avionics package (Clif Dawson)
31. 09:10 PM - Re: metal prop re-pitching (amsafetyc@aol.com)
32. 09:14 PM - Re: Re: Metal question (amsafetyc@aol.com)
33. 09:16 PM - Re: Re: Metal question (amsafetyc@aol.com)
34. 09:37 PM - Re: Metal question (coxwelljon)
35. 09:39 PM - Re: Re: Avionics package (Gboothe5)
Message 1
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| Subject: | Re: Avionics package |
Hi Jeff,
Pictures please? I love this stuff.
Dan Helsper
Poplar Grove, IL.
-----Original Message-----
From: bender <jfaith@solairusaviation.com>
Sent: Thu, Nov 11, 2010 3:25 pm
Subject: Pietenpol-List: Avionics package
>
made some ebay purchases.... scored an altimeter from the 40's
nd a tach and an airspeed indicator that were supposed to be for a tiger
oth... new in boxes.. the airspeed indicator has a 1931 manufacture date..
they
ook really groovy
8 ribs done since nov 1st
icked up wood for the longerons today and tore down the A engine..
makin sawdust in louisville
eff
ead this topic online here:
http://forums.matronics.com/viewtopic.php?p=319049#319049
ttachments:
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Message 2
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| Subject: | Re: Fuselage Sides |
Howdy,When I built my sides,I went with the 13'5" and after they were put together
the fuselage was 13'4 3/8". So 5/8" short.dave
--------
Building a Piet
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http://forums.matronics.com/viewtopic.php?p=319098#319098
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| Subject: | Re: Big and Tall Steel Fuselage |
If you are big and tall,I'd think about making the rear cockpit longer,like the
long fuselage drawings or a bit more.I'm 5-9 built the long fuselage and there
isn't much room for my skinny self.dave
--------
Building a Piet
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| Subject: | Re: Fuselage Sides |
Mr Craig.
I have been remiss in my welcoming you to this rather humble asylum of
builders.bumblers.experts and buddies. It is a place comprised of dreamers
from all walks of life and disciplines each have learned one basic rule
which I will take the liberty of sharing with you.
Don't waste your time and energy over thinking it just start building!
Its easy to spot the newbie we have all been there. Just build and enjoy the
process the fruits of your labors and the adventure of achieving your dream
one step at a time
John
Do not archive this is a lesson many of us have learned and many more will
never learn
Sent via DROID on Verizon Wireless
-----Original message-----
From: "Mr. Craig" <acwelder@cableone.net>
Sent: Fri, Nov 12, 2010 04:40:39 GMT+00:00
Subject: Pietenpol-List: Fuselage Sides
The 1932 Glider Manual shows the fuselage on the Air Camper as being 13' 5"
long. When the sides are built flat and then bowed from front to rear, the
fuselage will become shorter. How much longer does the upper and lower
longerons need to be in order for the overall length to be correct after the
sides are bent in?
Thanks Craig
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| Subject: | Re: Avionics package |
yup.... it reads in tens of knots... from 20 to 120 on the outer scale then up
to 195 on the inner scale as it goes around again..i can't believe these are NOS..
the boxes are even cool
jeff
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Fellow workers in the field of Piet:
I am having trouble finding a source that carries 5/16" steel as required
for two small parts of the split landing gear. Everybody has 1/8" or 1/4"
or 1/2" but no 5/16" so this must be a communist plot of some kind.
Anyway, to the question. Is it at all acceptable to edge weld smaller
stock into a piece of the required thickness? The final piece would be 1"
x 2" x 5/16" and there would be a single bolt hole in one end. The part
gets welded to the axle.
All you metal workers out there, please chime in.
Tom Stinemetze
N328X
McPherson, KS.
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| Subject: | Re: Metal question |
I do not have the plans with me to look at, so I do not know where on the gear
these parts go, nor what stresses they will subject to, however I would bet that
edge welding said parts would be OK. Some of the wing strut/landing gear fittings
for the wood gear have some edge welding done to them.
If you can find larger steel stock, I could machine these two parts for you. Email
me off list if interested.
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| Subject: | Re: Metal question |
Hi Tom,
Did you call Dillsburg Aero?
Ryan
On Fri, Nov 12, 2010 at 10:59 AM, TOM STINEMETZE <TOMS@mcpcity.com> wrote:
> *Fellow workers in the field of Piet:*
> **
> *I am having trouble finding a source that carries 5/16" steel as required
> for two small parts of the split landing gear. Everybody has 1/8" or 1/4"
> or 1/2" but no 5/16" so this must be a communist plot of some kind. Anyway,
> to the question. Is it at all acceptable to edge weld smaller stock into a
> piece of the required thickness? The final piece would be 1" x 2" x 5/16"
> and there would be a single bolt hole in one end. The part gets welded to
> the axle.*
> **
> *All you metal workers out there, please chime in.*
> **
> *Tom Stinemetze*
> *N328X*
> *McPherson, KS.*
>
> *
>
>
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| Subject: | airworthiness aplication |
I am in the middle of filling out my form 8130-6 and have some questions I could
sure use help with. if anyone has been through this recently and has time for
a phone call I would sure appreciate you e-mailing me with your phone number.
Raymond. my address is skellflyer1(at)yahoo.com
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| Subject: | Re: Metal question |
Wilco in Wichita, KS is supposed to be getting some in. They have good prices on
4130 steel.
http://www.wilcoaircraftparts.com/4130-steel.htm
The Yard, also in Wichita may have smaller pieces.
http://www.yardstore.com/about.htm
or
http://www.benemiller.com/aircraft_alloy.htm
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http://forums.matronics.com/viewtopic.php?p=319142#319142
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| Subject: | Re: Metal question |
Great sources Mr. Mr. Craig. And close to home as well.
Stinemetze
>>> "Mr. Craig" <acwelder@cableone.net> 11/12/2010 12:45 PM >>>
Wilco in Wichita, KS is supposed to be getting some in. They have good
prices on 4130 steel.
http://www.wilcoaircraftparts.com/4130-steel.htm
The Yard, also in Wichita may have smaller pieces.
http://www.yardstore.com/about.htm
or
http://www.benemiller.com/aircraft_alloy.htm
Message 12
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| Subject: | Re: Metal question |
Ryan:
I forgot about Dillsburg. Thanks!
Tom
>>> Ryan Mueller <rmueller23@gmail.com> 11/12/2010 12:27 PM >>>
Hi Tom,
Did you call Dillsburg Aero?
Ryan
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| Subject: | Re: Avionics package |
HeyJeff,
that's pretty cool. What kind of wood did you pick up, and where did you get it.
Thanks!
John in Louisville
--------
I just hope when it's my turn to reach up and touch the face of God, I don't poke
him in the eye on accident.
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| Subject: | Re: Metal question |
Tom,
As a rule, edge welding two smaller thicknesses to obtain one thicker finished
piece does not equal the strength of a solid piece. The only place the two pieces
are joined is at the outside edges, so, in bending, the resulting piece is
weaker than a solid piece. This would be like making a sheet of plywood, but
only gluing the layers together at the outside edges, with no glue in the middle.
Now, if the part will ONLY be loaded in tension (no bending forces), then the two-piece
part will be able to carry basically the same load as the solid piece.
The piece that you are referring to (see attached images) will be primarily loaded
in tension, so you might be all right with two thinner pieces edge-welded
together. But a better solution would be to use a solid piece. The title block
of Drawing No. 3 calls for 1020 steel, not 4130. So, if you can't find a piece
of 5/16" steel locally, I'm sure you could find a piece of 3/8" thick steel.
That would provide 20% more strength, and only add one ounce to the total weight
of your plane. Alternately, if you can get your hands on a bit of 1/4" thick
4130, that would also work, since that would be stronger than 5/16" thick 1020
steel.
Bill C.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=319156#319156
Attachments:
http://forums.matronics.com//files/lg_175.jpg
http://forums.matronics.com//files/lg_lug_158.jpg
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| Subject: | Re: Avionics package |
I got a 15 foot 5/4 by 6 poplar board from boland malhony... and a poplar 1 by
6.. cut them up today
Also got another western red cedar board to finish my ribs... i get the cedar in
6' 5/4 by 4 and crazy straight tight grain..like 25 rings per inch...it's pretty
wood
got an old Wico model c 1128 magneto in the mail today too...
cleaned it up, gapped the points and it throws a huge spark
it's CCW rotation and has an adjustable impulse coupling
jeff
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| Subject: | Re: Fuselage Sides |
Craig,
If you build the sides flat, using the dimensions on the plans, you will find that
when you join the sides, and bow them together to meet at the tail, that the
overall length will become shorter by "just the right amount". :D
While it is normal drafting practice to draw an assembly in its assembled state,
and it does appear that the FGM plans do show that, I feel pretty safe in assuming
that anyone that has built a plane from those plans built their fuselage
sides using the side view as though it was a flat plan. The Pietenpol is built
just like a giant model airplane. If you've ever built a stick and tissue
model airplane, you will know that you build the fuselage sides flat on top of
the plans, and then when you join the sides, your main concern is that the two
sides are the same length (whatever that length is), and that they both flex
equally (symmetrical).
I just checked the "improved" Air Camper plans, and the overall length on the view
labeled "layout for side of fuselage" actually is 1/2" longer than the overall
length of the finished fuselage. I have built my fuselage basic structure,
and joined the sides. But I have not measured the overall finished length.
I also do not plan to measure the overall finished length. It doesn't really matter
that much. Plus or minus half an inch will not matter on the overall length
of the fuselage. Making sure that the fuselage is symmetrical does matter.
In short, trying to compensate for the shortening effect is WAAAAY more work than
it's worth. How would you decide where to add the extra length?
Bill C.
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| Subject: | Re: Avionics package |
Since your ASI and Tach were originally destined for a Tiger Moth, maybe you should
consider putting a Gipsy Major on the nose...
Bill C.
do not archive.
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| Subject: | Re: Metal question |
Bill:
Precise and to the point. EXACTLY what I needed to hear. It also
occurred to me that multiple pieces of metal welded together on their
edges still leaves internal spaces which could corrode from the inside out
with no visible sign. I'm going to find some solid metal somewhere. By
the way, that is exactly the part that I am concerned with. There will be
both tension and compression loads but there should be no bending forces
unless one of the gear legs lets go. (Which I have heard can happen to
certain nefarious persons named Axel.)
Tom Stinemetze
N328X
>>> "Bill Church" <billspiet@sympatico.ca> 11/12/2010 3:49 PM >>>
Tom,
As a rule, edge welding two smaller thicknesses to obtain one thicker
finished piece does not equal the strength of a solid piece. The only
place the two pieces are joined is at the outside edges, so, in bending,
the resulting piece is weaker than a solid piece. This would be like
making a sheet of plywood, but only gluing the layers together at the
outside edges, with no glue in the middle.
Now, if the part will ONLY be loaded in tension (no bending forces), then
the two-piece part will be able to carry basically the same load as the
solid piece.
The piece that you are referring to (see attached images) will be
primarily loaded in tension, so you might be all right with two thinner
pieces edge-welded together. But a better solution would be to use a solid
piece. The title block of Drawing No. 3 calls for 1020 steel, not 4130.
So, if you can't find a piece of 5/16" steel locally, I'm sure you could
find a piece of 3/8" thick steel. That would provide 20% more strength,
and only add one ounce to the total weight of your plane. Alternately, if
you can get your hands on a bit of 1/4" thick 4130, that would also work,
since that would be stronger than 5/16" thick 1020 steel.
Bill C.
Message 19
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| Subject: | Re: airworthiness aplication |
I got my reply- thanks Ben you were very helpful. maybe I can help you some time.
Raymond
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| Subject: | Re: Metal question |
HOW ABOUT IF YOU BRAZED THEM TOGETHER???
IT WOULD WICK IN BETWEEN THE 2 PIECES.
WOULD BE DAMN STRONG!!!
JUST A THOUGHT.....
3 YEAR PIET BUILDER
DAVE
-----Original Message-----
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com]On Behalf Of TOM
STINEMETZE
Sent: Friday, November 12, 2010 2:30 PM
To: pietenpol-list@matronics.com
Subject: Pietenpol-List: Re: Metal question
Bill:
Precise and to the point. EXACTLY what I needed to hear. It also
occurred to me that multiple pieces of metal welded together on their edges
still leaves internal spaces which could corrode from the inside out with no
visible sign. I'm going to find some solid metal somewhere. By the way,
that is exactly the part that I am concerned with. There will be both
tension and compression loads but there should be no bending forces unless
one of the gear legs lets go. (Which I have heard can happen to certain
nefarious persons named Axel.)
Tom Stinemetze
N328X
>>> "Bill Church" <billspiet@sympatico.ca> 11/12/2010 3:49 PM >>>
Tom,
As a rule, edge welding two smaller thicknesses to obtain one thicker
finished piece does not equal the strength of a solid piece. The only place
the two pieces are joined is at the outside edges, so, in bending, the
resulting piece is weaker than a solid piece. This would be like making a
sheet of plywood, but only gluing the layers together at the outside edges,
with no glue in the middle.
Now, if the part will ONLY be loaded in tension (no bending forces), then
the two-piece part will be able to carry basically the same load as the
solid piece.
The piece that you are referring to (see attached images) will be
primarily loaded in tension, so you might be all right with two thinner
pieces edge-welded together. But a better solution would be to use a solid
piece. The title block of Drawing No. 3 calls for 1020 steel, not 4130. So,
if you can't find a piece of 5/16" steel locally, I'm sure you could find a
piece of 3/8" thick steel. That would provide 20% more strength, and only
add one ounce to the total weight of your plane. Alternately, if you can get
your hands on a bit of 1/4" thick 4130, that would also work, since that
would be stronger than 5/16" thick 1020 steel.
Bill C.
Message 21
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| Subject: | Re: Metal question |
Tom,
I don't mean to sound argumentative, and you undoubtedly know more about
welding than I, but, if you are adverse to sandwiching two pieces of metal
by edge welding, how would you address the gear-wing strut fittings?
Spar-cabane fittings?
Gary Boothe
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of TOM
STINEMETZE
Sent: Friday, November 12, 2010 2:30 PM
Subject: Pietenpol-List: Re: Metal question
Bill:
Precise and to the point. EXACTLY what I needed to hear. It also occurred
to me that multiple pieces of metal welded together on their edges still
leaves internal spaces which could corrode from the inside out with no
visible sign. I'm going to find some solid metal somewhere. By the way,
that is exactly the part that I am concerned with. There will be both
tension and compression loads but there should be no bending forces unless
one of the gear legs lets go. (Which I have heard can happen to certain
nefarious persons named Axel.)
Tom Stinemetze
N328X
>>> "Bill Church" <billspiet@sympatico.ca> 11/12/2010 3:49 PM >>>
Tom,
As a rule, edge welding two smaller thicknesses to obtain one thicker
finished piece does not equal the strength of a solid piece. The only place
the two pieces are joined is at the outside edges, so, in bending, the
resulting piece is weaker than a solid piece. This would be like making a
sheet of plywood, but only gluing the layers together at the outside edges,
with no glue in the middle.
Now, if the part will ONLY be loaded in tension (no bending forces), then
the two-piece part will be able to carry basically the same load as the
solid piece.
The piece that you are referring to (see attached images) will be primarily
loaded in tension, so you might be all right with two thinner pieces
edge-welded together. But a better solution would be to use a solid piece.
The title block of Drawing No. 3 calls for 1020 steel, not 4130. So, if you
can't find a piece of 5/16" steel locally, I'm sure you could find a piece
of 3/8" thick steel. That would provide 20% more strength, and only add one
ounce to the total weight of your plane. Alternately, if you can get your
hands on a bit of 1/4" thick 4130, that would also work, since that would be
stronger than 5/16" thick 1020 steel.
Bill C.
Message 22
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| Subject: | metal prop re-pitching |
Anyone know a good prop shop that'll repitch a metal prop. I am in Dallas area
and googled and made some calls, but no joy. I'd like to know if I can get one
repitched(and price)before I plunk down some $$ on one. It doesn't have to be
near dallas..Thanks in advance.
Larry
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| Subject: | Re: Big and Tall Steel Fuselage |
Built the long fuselage per the plans. Didn't fret about dimensions beyond what
was listed on the drawings. Glued it together and it appears to fly just fine.
I'm 6' and 190 pounds. Flew it, with all my gear, by myself, from Austin,
TX to Brodhead/Oshkosh this past summer.
for what it's worth
--------
Kevin "Axel" Purtee
NX899KP
Austin/Georgetown, TX
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| Subject: | Re: Fuselage Sides |
Bill Church wrote:
> I just checked the "improved" Air Camper plans, and the overall length on the
view labeled "layout for side of fuselage" actually is 1/2" longer than the
overall length of the finished fuselage.
>
> .........
>
> How would you decide where to add the extra length?
>
> Bill C.
Hi Bill
I really just wanted to know how you wood fuselage guys built yours. As you say
1/2" one way or another isn't a big deal. Square and symmetrical are what is
important.
but, adding a 1/2 or 3/4 or 1" really isn't that hard. :)
You asked where to add it and you state the "improved" plans shows it. Obviously
you would add it where the designer intended. :)
I'm building a steel fuselage. The preferred method is to build a top and bottom,
not two sides like you wood guys do. With this method the fuselage will be
the correct overall length. The top is flat, so it is rather straight forward
to layout. The bottom is curved and one MUST allow for this with lengthened bottom
longerons.
Ref: Construction of Tubular Steel Fuselages by Vex Aviation
http://www.actechbooks.com/products/act134/
Craig
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| Subject: | Re: Does life get any better? |
I fly better when I've had a few...
(sorry)
do not archive
--------
Kevin "Axel" Purtee
NX899KP
Austin/Georgetown, TX
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| Subject: | Re: 2 piets at breakfast this morning |
Beautiful, Shad!
Good Lord willin' Fat Girl and I will get to meet Oscar and Scout tomorrow and
will have some similar pics.
do not archive
--------
Kevin "Axel" Purtee
NX899KP
Austin/Georgetown, TX
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| Subject: | Re: Happy Veteran's Day |
Best to your son, John.
Home for the long weekend from AZ. Get to (hopefully) fly tomorrow!
do not archive
--------
Kevin "Axel" Purtee
NX899KP
Austin/Georgetown, TX
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| Subject: | Re: Fuselage Sides2 |
hi guy I have a fucselajo size about 13-5" at plane say but some guy talk a
bout longer vercion what size is chort and longer????tanks for all you help
and suport=C2- advices, jorge from hanford
--- On Fri, 11/12/10, amsafetyc@aol.com <amsafetyc@aol.com> wrote:
From: amsafetyc@aol.com <amsafetyc@aol.com>
Subject: Re: Pietenpol-List: Fuselage Sides
#yiv1230498553 {word-wrap:break-word;background-color:#ffffff;}
Mr Craig.
I have been remiss in my welcoming you to this rather humble asylum of buil
ders.bumblers.experts and buddies. It is a place comprised of dreamers from
all walks of life and disciplines each have learned one basic rule which I
will take the liberty of sharing with you.
Don't waste your time and energy over thinking it just start building!
Its easy to spot the newbie we have all been there. Just build and enjoy th
e process the fruits of your labors and the adventure of achieving your dre
am one step at a time
John
Do not archive this is a lesson many of us have learned and many more will
never learn
Sent via DROID on Verizon Wireless
-----Original message-----
From: "Mr. Craig" <acwelder@cableone.net>
Sent: Fri, Nov 12, 2010 04:40:39 GMT+00:00
Subject: Pietenpol-List: Fuselage Sides
The 1932 Glider Manual shows the fuselage on the Air Camper as being 13' 5"
long. When the sides are built flat and then bowed from front to rear, the
fuselage will become shorter. How much longer does the upper and lower lon
gerons need to be in order for the overall length to be correct after the s
ides are bent in?
Thanks Craig
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=C2=C2=B7=BA~=B0=C3=AD=C2=B2,=C3=9Eg(=93=C5-=C3=93M4
=C3=93G=C3=9Aq=C3=BC=C2=A2=C3=C3=A2z=C2=B9=C3=9E=C3=81=C3=8A.=C2=AE'=C2
=AB=C3=A5y=C2=ABJ=C3i=C2=A2=C2=BBX=C2=A2=C3=C3=8B=C5-=C3=8BlN=C2=AC
2=B0=C3=AD=9E'tg=C2=ADJ=B0=C5=BEa8=C3=81DA=B0=C3=BB
lh=C2=BD=C3=A9=BAz=C2=B8=C2=AC=C2=B6=82=AC=C5=BE{=C5=A1=9D
=C2=B8=C2=AC=C2=B4[=C2=A7u=C2=A2=C2=B1=C3=C3=82=93'$=C2=A2}
=C3-=C2=A8=C5=BE=C3=9A=C3=A2n=C3=ABb=C2=A2yb=C5=BEF=C3=9E=93=C5
=92-=C2=A1=C3=B8=C2=A7v=B9=C2=AD=C5=A1=C5-=C3=9Ei=C2=BA.=C2a=C5
-=C3=8C=C5=BEj=C2=BBz=C2=BA=C3=A2~'=C2=AD=C3=A7=CB=86=EF=BD=C3=87=C2
=A7=C2=B6+=C3=9E'=C3=AD=C2=B2=C5=A1=C3=A8=C2=BE'^v=C3=B2=0A=0A=0A
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| Subject: | Re: Big and Tall Steel Fuselage |
kevinpurtee wrote:
> Built the long fuselage per the plans. Didn't fret about dimensions beyond what
was listed on the drawings. Glued it together and it appears to fly just
fine. I'm 6' and 190 pounds. Flew it, with all my gear, by myself, from Austin,
TX to Brodhead/Oshkosh this past summer.
>
> for what it's worth
Thanks for the info Kevin. I'm going with the Model A Ford motor and original size
fuselage (possibly modified). From what Andrew Pietenpol told me, the long
fuselage/Corvair powered Air Camper is a different beast.
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| Subject: | Re: Avionics package |
No radiator either! Bonus!
Finally! I've overcome my 6 months difficulties getting
my website upload function to work and have uploaded
a bunch of stuff, two new Piet pages in there!
http://clifdawson.ca/
Clif
do not archive
>
> Since your ASI and Tach were originally destined for a Tiger Moth, maybe
> you should consider putting a Gipsy Major on the nose...
>
> Bill C.
>
> do not archive.
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| Subject: | Re: metal prop re-pitching |
Sensenich propeller lancaster pa. They.do everything on metal props here in
lancaster
John
Sent via DROID on Verizon Wireless
-----Original message-----
From: TriScout <apfelcyber@yahoo.com>
Sent: Sat, Nov 13, 2010 01:19:31 GMT+00:00
Subject: Pietenpol-List: metal prop re-pitching
Anyone know a good prop shop that'll repitch a metal prop. I am in Dallas
area and googled and made some calls, but no joy. I'd like to know if I can
get one repitched(and price)before I plunk down some $$ on one. It doesn't
have to be near dallas..Thanks in advance.
Larry
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| Subject: | Re: Metal question |
Why not use 300 grade stainless ?
John
Sent via DROID on Verizon Wireless
-----Original message-----
From: Gboothe5 <gboothe5@comcast.net>
Sent: Fri, Nov 12, 2010 23:45:07 GMT+00:00
Subject: RE: Pietenpol-List: Re: Metal question
Tom,
I don't mean to sound argumentative, and you undoubtedly know more about
welding than I, but, if you are adverse to sandwiching two pieces of metal
by edge welding, how would you address the gear-wing strut fittings?
Spar-cabane fittings?
Gary Boothe
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of TOM
STINEMETZE
Sent: Friday, November 12, 2010 2:30 PM
Subject: Pietenpol-List: Re: Metal question
Bill:
Precise and to the point. EXACTLY what I needed to hear. It also occurred
to me that multiple pieces of metal welded together on their edges still
leaves internal spaces which could corrode from the inside out with no
visible sign. I'm going to find some solid metal somewhere. By the way,
that is exactly the part that I am concerned with. There will be both
tension and compression loads but there should be no bending forces unless
one of the gear legs lets go. (Which I have heard can happen to certain
nefarious persons named Axel.)
Tom Stinemetze
N328X
>>> "Bill Church" <billspiet@sympatico.ca> 11/12/2010 3:49 PM >>>
Tom,
As a rule, edge welding two smaller thicknesses to obtain one thicker
finished piece does not equal the strength of a solid piece. The only place
the two pieces are joined is at the outside edges, so, in bending, the
resulting piece is weaker than a solid piece. This would be like making a
sheet of plywood, but only gluin
Message 33
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| Subject: | Re: Metal question |
Over thinking the build is highly over rated and unproductive.
John
Sent via DROID on Verizon Wireless
-----Original message-----
From: Bill Church <billspiet@sympatico.ca>
Sent: Fri, Nov 12, 2010 21:51:55 GMT+00:00
Subject: Pietenpol-List: Re: Metal question
Tom,
As a rule, edge welding two smaller thicknesses to obtain one thicker
finished piece does not equal the strength of a solid piece. The only place
the two pieces are joined is at the outside edges, so, in bending, the
resulting piece is weaker than a solid piece. This would be like making a
sheet of plywood, but only gluing the layers together at the outside edges,
with no glue in the middle.
Now, if the part will ONLY be loaded in tension (no bending forces), then
the two-piece part will be able to carry basically the same load as the
solid piece.
The piece that you are referring to (see attached images) will be primarily
loaded in tension, so you might be all right with two thinner pieces
edge-welded together. But a better solution would be to use a solid piece.
The title block of Drawing No. 3 calls for 1020 steel, not 4130. So, if you
can't find a piece of 5/16" steel locally, I'm sure you could find a piece
of 3/8" thick steel. That would provide 20% more strength, and only add one
ounce to the total weight of your plane. Alternately, if you can get your
hands on a bit of 1/4" thick 4130, that would also work, since that would be
stronger than 5/16" thick 1020 steel.
Bill C.
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| Subject: | Re: Metal question |
Tom,
If you don't need 4130 for the tabs and can use 1018 which is what I think BP used you might try Speedy Metals http://www.speedymetals.com/c-8213-1018.aspx?pagenum=4.
I have ordered from them and got good service fir special shapes in small quantities.
--------
Jon Coxwell
GN-1 Builder
Recycle and preserve the planet
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| Subject: | Re: Avionics package |
Clif,
You have been busy! Your work continues to appear....well....artistic!
Gary
Do not archive
-----Original Message-----
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Clif Dawson
Sent: Friday, November 12, 2010 8:09 PM
Subject: Re: Pietenpol-List: Re: Avionics package
No radiator either! Bonus!
Finally! I've overcome my 6 months difficulties getting
my website upload function to work and have uploaded
a bunch of stuff, two new Piet pages in there!
http://clifdawson.ca/
Clif
do not archive
>
> Since your ASI and Tach were originally destined for a Tiger Moth, maybe
> you should consider putting a Gipsy Major on the nose...
>
> Bill C.
>
> do not archive.
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