Today's Message Index:
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1. 12:50 AM - Re: wings and cabanes-----one simple question (Braniff1966)
2. 06:30 AM - Re: wings and cabanes-----one simple question (Pocono John)
3. 09:27 AM - Re: Re: wings and cabanes-----one simple question (THOMAS.233327)
4. 09:28 AM - Re: wings and cabanes-----one simple question (Pocono John)
5. 11:42 AM - Re: Drawing the rib (aerocarjake)
6. 03:02 PM - Re: Drawing the rib (Pocono John)
7. 03:16 PM - Re: wings and cabanes-----one simple question (Pocono John)
8. 03:53 PM - Oshkosh trip complete. (tools)
9. 07:35 PM - Re: Oshkosh trip complete. (tools)
10. 07:40 PM - Re: Oshkosh trip complete. (jarheadpilot82)
Message 1
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| Subject: | Re: wings and cabanes-----one simple question |
yes drafting is an art form that is being lost..so sad..
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http://forums.matronics.com/viewtopic.php?p=430660#430660
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| Subject: | Re: wings and cabanes-----one simple question |
Appreciate the comments. In making the tick marks along the horizontal reference
line, I clamped a long metal ruler (can be seen momentarily at 3:19) and started
at the forward line (datum). I measured this ruler with several others by
the way, and decided to use the long metal one for all rib measurements to maintain
consistency. I had to use a magnifying glass for those 32nd and 64th measurements.
Oh, I took a mechanical drawing class in 1978 at SUNY Farmingdale. Still using
the old T square (in opening of video, it's behind the blue ruler; you can see
the "T" down low as it's hanging upside down).
Yes, the pencil line is a bit thick, but didn't think it would make a substantial
impact, but I'll try this again with a mechanical pencil.
I contacted Andrew Pietenpol and he has already responded (I sent him the video
link also). He said he's going to call me later. He mentioned in his note "the
plane was always under continuous improvement".
One thing I noticed going through the booklet (orange cover) is the wing on page
30 (Sky Scout) is the same rib on plans page 5. Hmmm.
Looking forward to a phone call later.
--------
John
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http://forums.matronics.com/viewtopic.php?p=430669#430669
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| Subject: | Re: wings and cabanes-----one simple question |
John and Tom
I agree with fine lines, but question the problem with using the end of the ruler
or scale.
I was a draftsmen for 3 years, then went to template making for Boeing. Drafting
scales all have the 0 (zero) a small distance from the end of the scale, machinists
have the zero at the end of the scale. Draftsman start at the one inch
mark, shop people test the scale making a mark at the end of the scale and at
some convenient distance down the scale-1", 4", 3 cm, whatever, move the scale
so the 1" mark is on one mark and see if the end of the scale produces accurate
measurements. If its good, use the end od the scale, if not THROW THAT SCALE
AWAY!. I guarantee you will end up with parts that are 1" short with maddening
regularity if you use the 1" mark as a starting point. I spent a whole career
in the shop and I learned this from experience (mostly building boats).
Tom Hale
PS. Yes Jake, I'm the Tom who built the HummelBird and was an officer in 441 of
several years.
----- Original Message -----
From: "tkreiner" <tkreiner@gmail.com>
Sent: Tuesday, September 16, 2014 8:43:03 PM
Subject: Pietenpol-List: Re: wings and cabanes-----one simple question
John,
Just as an observation... without knowing whether you ever took a drafting class,
or had any formal training in layout or lofting... it would appear that your
lines themselves, are way too thick. Thin lines are much better as the thickness
of the line never distorts or influences the design you're transferring to
paper - or, in this case, plywood.
Another item I noticed is that your dimensions are taken - and I'm not dissing
you here, just giving you another observation - from the end of the scale. If
you want to produce accurate dimensions, place the 1.0 inch line at the starting
point or datum, if you will, and hold the scale firmly in place while you place
- or measure - the location of the tick marks.
The above are techniques which aren't being taught anymore in the era of CAD programs,
but when you're actually laying out a series of points to produce an airfoil,
or any other critical design, the old school techniques can be the difference
you're experiencing.
After 40+ years of Mechanical Design Engineering & drafting, just my $0.02.
--------
Tom Kreiner
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http://forums.matronics.com/viewtopic.php?p=430654#430654
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| Subject: | Re: wings and cabanes-----one simple question |
Amazing that Andrew Pietenpol would call me. He said:
1) can build either the full size rib OR the rib from drawing 5. There's an 86
year difference between the two (his words).
2) Keep it simple.
3) Stick to the plans.
4) keep it light
It sure says something when he can take the time out of his life to chat with a
builder.
--------
John
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=430675#430675
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| Subject: | Re: Drawing the rib |
hello...
I watched your video and it does look like a confusing discrepancy...?!?!?
(Since I bought my wings that another person had built, I have not much to offer
in regards to this question.)
--------
Jake Schultz - curator,
Newport Way Air Museum (OK, it's just my home)
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http://forums.matronics.com/viewtopic.php?p=430682#430682
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| Subject: | Re: Drawing the rib |
Andrew Pietenpol called me this morning. He said:
1) can build from either the full size rib OR the rib from drawing 5. There's an
86 year difference between the two (his words).
2) Keep it simple.
3) Stick to the plans.
4) keep it light
Apparently, they are different ribs. The one on plans page 5 is the Sky Scout rib
from page 30 of the orange booklet.
In his email to me, he made this comment "In short the plane was always under continuous
improvement."
Since I already painstakingly drew the rib from page 5 of the plans, and he said
it's OK, that's the one I'm building.
It sure says something when he can take the time out of his life to chat with a
builder.
--------
John
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http://forums.matronics.com/viewtopic.php?p=430693#430693
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| Subject: | Re: wings and cabanes-----one simple question |
When looking at the rib on page 5, compare it to the Sky Scout rib on page 30 of
the orange booklet. They're the same.
--------
John
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http://forums.matronics.com/viewtopic.php?p=430694#430694
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| Subject: | Oshkosh trip complete. |
Left 2rn in Oshkosh for a while to get the condition inspection done and flew it
back to chickamauga yesterday end today.. Awesome trip! I think Scott and I
are over 45 hours of cross country time together in her.
More pics and videos to follow.
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http://forums.matronics.com/viewtopic.php?p=430695#430695
Attachments:
http://forums.matronics.com//files/image_418.jpg
Message 9
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| Subject: | Re: Oshkosh trip complete. |
More pics from along the way.
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http://forums.matronics.com/viewtopic.php?p=430702#430702
Attachments:
http://forums.matronics.com//files/image_207.jpg
http://forums.matronics.com//files/image_582.jpg
Message 10
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| Subject: | Re: Oshkosh trip complete. |
Nice picture, Lance Captain!
--------
Semper Fi,
Terry Hand
Athens, GA
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http://forums.matronics.com/viewtopic.php?p=430703#430703
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