Today's Message Index:
----------------------
1. 07:15 AM - Re: Alaska Pietenpol project begins again... (Mark Blackwell)
2. 09:52 AM - tire pressure (Oscar Zuniga)
3. 09:52 AM - Re: Alaska Pietenpol project begins again... (Jeff Boatright)
4. 09:59 AM - Re: Re: Wood Sources (Bill Church)
5. 10:29 AM - Re: tire pressure (Michael D Cuy)
6. 10:44 AM - Re: tire pressure (Hans Vander Voort)
7. 11:09 AM - Re: Re: Wood Sources (Bill Church)
8. 11:40 AM - tire pressure (Oscar Zuniga)
9. 12:03 PM - thinking like an engineer (Michael D Cuy)
10. 12:33 PM - Re: tire pressure (Hans Vander Voort)
11. 12:55 PM - Re: Wood Sources (Glenn Thomas)
12. 01:13 PM - Re: tire pressure (Mark Blackwell)
13. 01:41 PM - Re: tire pressure (Bill Church)
14. 07:24 PM - (OT) Moving to Orlando, FL? (Richard T. Perry)
15. 09:14 PM - Re: Re: Wood Sources (Michael Nadeau)
16. 09:34 PM - Re: tire pressure (Catdesign)
17. 09:37 PM - Re: tire pressure (Rcaprd@aol.com)
18. 09:39 PM - Re: Re: Wood Sources (Catdesign)
19. 09:49 PM - Re: thinking like an engineer (Rcaprd@aol.com)
Message 1
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| Subject: | Re: Alaska Pietenpol project begins again... |
Yes you can charge for instruction in an airplane provided by the student. You
just can't rent an ELSA. I believe you can rent an SLSA. If you registered it
as an regular experimental and put lights ect on it, you would have no night
restriction or altitude restrictions on the airplane. As an ELSA you would course
how many Pieters fly at night?
For the nature of the EAA young eagles program, it would be a different looking
airplane that should be a ride they won't forget. You might even consider it
long term advertising because it was a simple flight like that, that started
an interest in aviation that one day lead me to get to an airport and learn to
fly. Sad thing is most of that type of work goes unrewarded in a society that
is so mobile. By the time that the kids you give a ride to can afford to start,
they have gone off to college and found a job somewhere that usually isn't
back home. Still worth doing in my opinion and a whole lot of fun.
I would be interested in what your FSDO tells you and their overall attitude toward
LSA. Around here its name is mud.
----- Original Message -----
From: Rob Stapleton
To: pietenpol-list@matronics.com
Sent: Monday, April 17, 2006 1:14 AM
Subject: RE: Pietenpol-List: Alaska Pietenpol project begins again...
Mark,
I have no intention of charging for the rides, I want to do it on behalf the
EAA program for free. As for the ELSA program and the FAA, it is my understanding
that you can charge for instruction while flying an ELSA. While the category
is very restrictive (ie.no night flights, and no flights over 10,000 ft etc.)
it is our mission to advance interest in flying and I think the Pietenpol will
attract attention and can be used as an example.
Now, whether I can find the time to work on this project and finish it, is a
far deeper question on my mind.
Thanks for your reply I will let you know what I am going to do, after I talk
with the local FSDO about it.
Regards,
Rob
-----Original Message-----
From: owner-pietenpol-list-server@matronics.com [mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Mark Blackwell
Sent: Sunday, April 16, 2006 6:37 PM
To: pietenpol-list@matronics.com
Subject: Re: Pietenpol-List: Alaska Pietenpol project begins again...
Rob there would be no reason to if you are going to build it. Registering it
as an ELSA would get you out of the 51% requirement for building. I also think
that the factory at that point can have maintenance training courses that can
certify owners to do maintenance, but that might be only SLSA.
If you build it under the amature built, you get the Repairmans Certificate if
you build at least 51% without any additional paperwork or training. If the
aircraft meets Light Sport Aircraft specs, then it can be operated by an properly
certified pilot. That includes LS pilots with the proper sign offs and certifications.
Neither ELSA or just experimental will allow any commercial operations so you
couldn't charge for the rides you would give. SLSA allows only flight training
if memory is correct.
As far as asking the FAA, the FAA here is pretty set against most anything LSA.
Its not surprising really when you think about how the organzation is structured.
Asking someone to sign off an ELSA might be the first one that inspector
has done and they don't like signing off things that they haven't done before.
A more conventional experimental is something most have done for a while
and would raise no paperwork concerns or red flags that could get them in trouble.
If anyone else could think of a reason why he should even ask about it, Im all
ears as well cause I looked at the same thing. (Only just for me not giving
rides) I couldn't find a single reason why ELSA would be any better for a scratch
built airplane than experimental.
Mark
----- Original Message -----
From: Rob Stapleton
To: pietenpol-list@matronics.com
Sent: Sunday, April 16, 2006 3:34 PM
Subject: Pietenpol-List: Alaska Pietenpol project begins again...
Hello,
I am new to the list, but have been monitoring it and reading about the various
projects and advice. Nice.
Tuesday I made the decision to take over Rob Spoo's Pietenpol project and will
be no doubt asking for advice from time to time. Does anyone know if a Pietenpol
has been registered as an Experimental Light Sport Aircraft so that it
can be used for instruction and flown on a Sport Pilot certificate?
Pete Marsh and I run a Sport Pilot instruction center at Birchwood Airport
and we want to use the Pietenpol to give rides to youth interested in aviation.
I haven't asked the FAA about this yet, but wondered if there were any messages
in the string on this.
RS
Rob Stapleton Photojournalist
Anchorage Alaska
907-336-9425
Message 2
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--> Pietenpol-List message posted by: "Oscar Zuniga" <taildrags@hotmail.com>
For you folks NOT running skinny tires... 41CC has 6.00x6 tires... what kind
of pressure do you run in them? The tire charts are all over the place,
depending on number of plies and so forth, but looks like for a gross weight
in the 1100 lb. range, something like 25-30 psi. Sounds high to me which is
why I'm asking the question.
So, who is running what tire pressure in non-motorcycle tires, Cub style
gear? Thanks!
Oscar Zuniga
San Antonio, TX
mailto: taildrags@hotmail.com
website at http://www.flysquirrel.net
Message 3
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| Subject: | Re: Alaska Pietenpol project begins again... |
I suggest you contact Joe Norris at EAA. He has
been a font of information for me on LSA issues:
jnorris@eaa.org
The "51% rule" only requires that more than half
the work done be by amateurs for the reasons
listed in the rule (e.g., personal education).
The work does not have to be done by one person.
A string of people can have owned a project, each
doing work on it, and it would still qualify as
an experimental, amateur-built, and be registered
to the final owner, who in turn would get the
repairman's certificate.
I think.
Anyway, send your questions to Joe at
jnorris@eaa.org. He's done a great job for me in
the past.
Jeff
At 10:37 PM -0400 4/16/06, Mark Blackwell wrote:
>Rob there would be no reason to if you are going
>to build it. Registering it as an ELSA would
>get you out of the 51% requirement for building.
>I also think that the factory at that point can
>have maintenance training courses that can
>certify owners to do maintenance, but that might
>be only SLSA.
>
>If you build it under the amature built, you get
>the Repairmans Certificate if you build at least
>51% without any additional paperwork or
>training. If the aircraft meets Light Sport
>Aircraft specs, then it can be operated by an
>properly certified pilot. That includes LS
>pilots with the proper sign offs and
>certifications.
>
>Neither ELSA or just experimental will allow any
>commercial operations so you couldn't charge for
>the rides you would give. SLSA allows only
>flight training if memory is correct.
>
>As far as asking the FAA, the FAA here is pretty
>set against most anything LSA. Its not
>surprising really when you think about how the
>organzation is structured. Asking someone to
>sign off an ELSA might be the first one that
>inspector has done and they don't like signing
>off things that they haven't done before. A
>more conventional experimental is something most
>have done for a while and would raise no
>paperwork concerns or red flags that could get
>them in trouble.
>
>If anyone else could think of a reason why he
>should even ask about it, Im all ears as well
>cause I looked at the same thing. (Only just for
>me not giving rides) I couldn't find a single
>reason why ELSA would be any better for a
>scratch built airplane than experimental.
>
>Mark
>
>----- Original Message -----
>From: <mailto:foto@alaska.net>Rob Stapleton
>To: <mailto:pietenpol-list@matronics.com>pietenpol-list@matronics.com
>Sent: Sunday, April 16, 2006 3:34 PM
>Subject: Pietenpol-List: Alaska Pietenpol project begins again...
>
>Hello,
>I am new to the list, but have been monitoring
>it and reading about the various projects and
>advice. Nice.
>
>Tuesday I made the decision to take over Rob
>Spoo=92s Pietenpol project and will be no doubt
>asking for advice from time to time. Does anyone
>know if a Pietenpol has been registered as an
>Experimental Light Sport Aircraft so that it can
>be used for instruction and flown on a Sport
>Pilot certificate?
>Pete Marsh and I run a Sport Pilot instruction
>center at Birchwood Airport and we want to use
>the Pietenpol to give rides to youth interested
>in aviation. I haven=92t asked the FAA about this
>yet, but wondered if there were any messages in
>the string on this.
>RS
>
>Rob Stapleton Photojournalist
>Anchorage Alaska
>907-336-9425
>
--
Jeffrey H. Boatright, PhD
Associate Professor, Emory Eye Center, Atlanta, GA, USA
Senior Editor, Molecular Vision, http://www.molvis.org/molvis
mailto:jboatri@emory.edu
Message 4
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| Subject: | Re: Wood Sources |
--> Pietenpol-List message posted by: "Bill Church" <eng@canadianrogers.com>
Glenn,
As far as I can see, the only reference to 4 faces in AC43.13-1B is when
determining whether cross-grain is acceptable or not.
The preferred cut is quarter-sawn (also called vertical grain), where
the log is first cut into quarters, then slices are cut off of the sides
of each quarter. The result (for the most part) is a board with the
grain clearly visible on two long faces of the board, and barely
discernable on the other two (short) faces. You can clearly count the
growth rings on the end of quarter-sawn boards. I remember seeing a
diagram that showed measuring the grain slope on adjacent faces, but now
I can't find a reference to it on the web - maybe its an old magazine
article - but you clearly can't have both (grain slope evident on 4
sides AND vertical grain).
Having said all that, the wood I have used so far was purchased as a 20
foot length of rough sawn 2" x 6" Sitka. I ran it through my
father-in-law's thickness planer (just because it was available) to
smooth out the 6" faces, then did all the rest of the cutting on my
32-year old 9" diameter blade table saw. The planing isn't really
necessary, just use a good quality ripping blade. I actually ended up
running all my capstrips through the table saw twice. The first pass was
just pushed through the saw against the fence, with the fence set about
1/32" bigger than the size I wanted (1/4" or 1/2"). This allows for
slight misalignment of a big hunk of wood. Then I set the fence at the
actual size desired, and ran each capstrip through again, but for this
pass I used a featherboard, which holds the capstrip consistantly tight
against the fence. The result was consistantly sized capstrips. Now, I
didn't get out the micrometer and measure each piece, but I would say
they were all within 1/64" , which is plenty good for what we're trying
to achieve. After running all 100 or so pieces through the saw, I
inspected each piece individually and found some sections where the
grain slope was excessive or wavy, or had knots. I marked these sections
and cut them out and used the cut out sections for kindling and set
aside the good parts. The rest of the wood I determined to be acceptable
to go into the wings that would eventually be carrying my butt (and
likely my wife and kids) through the air. Remember that roughly one
third of the wood in your wing ribs are pieces less than ten inches long
- so you can use most of that capstrip that has a bad section somewhere
in the middle. If you can find 60 or so pieces that are good for the
entire 61" or 62", use those for your top and bottom capstrips. I had
about 55 good pieces, which left me short 5 pieces (in order to make 30
ribs). So I took 10 pieces of offcuts that were each about three feet
long, and mitred the ends to produce 1:13 scarf joints, and epoxied
these together to produce 5 spliced capstrips. These scarfed joints get
located behind the plywood gussets.
In short, your wood is likely fine to produce your ribs with - just
inspect each piece and use the best pieces where the best wood is
required. I actually had very little scrap (because we get to use lots
of little short pieces of wood in the ribs), and I figure I spent about
CDN$120 for my capstrips (and about 10 hours of sawing).
Bill C
-----Original Message-----
Sent: April 15, 2006 9:31 AM
Subject: Re: Pietenpol-List: Re: Wood Sources
--> Pietenpol-List message posted by: <glennthomas@charter.net>
What I've come to learn is that if the end grain is vertical, then the
grain cannot be straight on the side faces. But the specs say 4 faces.
Yesterday I met with a friend building a Flizter and he told me to not
be so fussy witht he capstrips because of all the gussets. My gut
feeling is that I should be looking for compliant slope on the grain if
the piece is quarter cut, or ignore if the grain is vertical if the top
and bottom look OK.
Message 5
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| Subject: | Re: tire pressure |
--> Pietenpol-List message posted by: Michael D Cuy <Michael.D.Cuy@grc.nasa.gov>
Oscar-- I know what you mean about tire pressure. I what I like to do is
kneel down and sight down the tire tread at ant level.
If you see all the treads not touching the floor (a smooth cement floor is
best or wood) you have too much tire pressure. If you see
all of the treads/sidewall sides touching and too much side buldge at the
bottom---too little pressure.
It is easy to see when those outboard treads touch and when they don't
touch--just by eye.
I've found that this works well then adjust as needed for the feel you want.
Mike
Message 6
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| Subject: | Re: tire pressure |
Cc: owner-pietenpol-list-server@matronics.com, pietenpol-list@matronics.com
--> Pietenpol-List message posted by: Hans Vander Voort <hans.vander.voort@alfalaval.com>
Oscar,
I use 6.00 x 6 - 4 ply Airtrac tires, 28 Psi "cold inside hangar"
Hot in the sun perhaps it reaches 30, and on a cold morning perhaps 25, but
I never measured that just my logic.
I did notice at lower pressures it is harder to roll.
At 28 Psi it rolls effortlessly on concrete.
Hans
"Oscar Zuniga"
<taildrags@hotmai
l.com> To
Sent by: pietenpol-list@matronics.com
owner-pietenpol-l cc
ist-server@matron
ics.com Subject
Pietenpol-List: tire pressure
04/17/2006 11:50
AM
Please respond to
pietenpol-list@ma
tronics.com
--> Pietenpol-List message posted by: "Oscar Zuniga"
<taildrags@hotmail.com>
For you folks NOT running skinny tires... 41CC has 6.00x6 tires... what
kind
of pressure do you run in them? The tire charts are all over the place,
depending on number of plies and so forth, but looks like for a gross
weight
in the 1100 lb. range, something like 25-30 psi. Sounds high to me which
is
why I'm asking the question.
So, who is running what tire pressure in non-motorcycle tires, Cub style
gear? Thanks!
Oscar Zuniga
San Antonio, TX
mailto: taildrags@hotmail.com
website at http://www.flysquirrel.net
Message 7
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| Subject: | Re: Wood Sources |
--> Pietenpol-List message posted by: "Bill Church" <eng@canadianrogers.com>
One other thing I forgot to mention was that I also used a
zero-clearance insert in the table saw. I made mine from a piece of 1/4"
phenolic sheet, cut to fit snugly into the saw, with set-screws to
adjust flush with the saw table. When the insert is made to fit nicely,
you lower the blade to below the insert, put the insert in place, start
up the saw, and slowly raise the blade through the insert. This cuts a
perfectly-sized slot in the insert, so there's no gap for thin strips of
wood to fall into, and nice clean cuts are the result.
Here's a link that might make what I just attempted to describe a little
clearer:
http://www.woodmagazine.com/wood/story.jhtml?storyid=/templatedata/wood/
story/data/289.xml
Bill C
-----Original Message-----
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Bill
Church
Sent: April 17, 2006 1:16 PM
Subject: RE: Pietenpol-List: Re: Wood Sources
--> Pietenpol-List message posted by: "Bill Church"
--> <eng@canadianrogers.com>
Glenn,
... did all the rest of the cutting on my 32-year old 9" diameter blade
table saw. The planing isn't really necessary, just use a good quality
ripping blade. ...
Bill C
Message 8
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--> Pietenpol-List message posted by: "Oscar Zuniga" <taildrags@hotmail.com>
Mikee wrote-
>What I like to do is kneel down and sight down the tire tread at ant level.
Do you know what this does to an engineer? Drives him/her nuts!!! We need
values, numbers, tangibles, measurables! None of this touchy-feely stuff
that you can't measure with something. It's like standing an engineer in a
round room and telling him to go stand in the corner... drives us nuts ;o)
Now Hans gave me something that I can write down, measure, and define.
Thank you, Hans... and Mikee- go stand in the corner at ant level ;o)
Oscar Zuniga ( do not archive )
San Antonio, TX
mailto: taildrags@hotmail.com
website at http://www.flysquirrel.net
Message 9
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| Subject: | thinking like an engineer |
--> Pietenpol-List message posted by: Michael D Cuy <Michael.D.Cuy@grc.nasa.gov>
Oscar & group--- you know I do engineering work too and enjoy hard, fast,
sure-fire numbers and stats from time to time,
but I forever bamboozle the stiff, by-the-book, mechanically-robotic
engineer types out here and some of them like it and
can see the benefits to thinking outside the norm, but others get flustered
by that kind of practical thinking.
My favorite one from earlier this year is when we were spraying some
composite samples with a plasma sprayed ceramic
coating and the coating started peeling off each sample as they
cooled. The guys from out of town only brought X number
of samples and now that "we have them all messed up" what are we going to
do ?? Aunti Em---itsa twister, itsa twister !!!
Since we knew right away how the coating could be done right they were all
upset because the samples they brought
had coating peeling off one side. They talked of having some new samples
FedEx'ed and overnighted.......when I simply
suggested "so tell me why we can't just spray the backsides with the other
composition that we know will work and be
done with it ?" You should have seen the looks..........priceless.
Mike C.
do not archive
Message 10
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| Subject: | Re: tire pressure |
--> Pietenpol-List message posted by: Hans Vander Voort <hans.vander.voort@alfalaval.com>
Oscar,
Hmmm...., before I got to my measurable numbers I kinda did what Mike
described.
Please note My measurements where taken at 235 Ft MSL on a standard
atmospheric day.
Any and all bets are of if you are on a different altitude, Temperature or
atmospheric pressure ;-)
Hans
"Oscar Zuniga"
<taildrags@hotmai
l.com> To
Sent by: pietenpol-list@matronics.com
owner-pietenpol-l cc
ist-server@matron
ics.com Subject
Pietenpol-List: tire pressure
04/17/2006 01:40
PM
Please respond to
pietenpol-list@ma
tronics.com
--> Pietenpol-List message posted by: "Oscar Zuniga"
<taildrags@hotmail.com>
Mikee wrote-
>What I like to do is kneel down and sight down the tire tread at ant
level.
Do you know what this does to an engineer? Drives him/her nuts!!! We need
values, numbers, tangibles, measurables! None of this touchy-feely stuff
that you can't measure with something. It's like standing an engineer in a
round room and telling him to go stand in the corner... drives us nuts ;o)
Now Hans gave me something that I can write down, measure, and define.
Thank you, Hans... and Mikee- go stand in the corner at ant level ;o)
Oscar Zuniga ( do not archive )
San Antonio, TX
mailto: taildrags@hotmail.com
website at http://www.flysquirrel.net
Message 11
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| Subject: | Re: Wood Sources |
--> Pietenpol-List message posted by: "Glenn Thomas" <glennthomas@flyingwood.com>
Great response. You answered my question. I thought about the vertical grain
and ring count problem and started to realize that if the grain is vertical you
CAN'T have rings showing on the side. I guess I was looking so hard I couldn't
see what was right in front of me. The section I was reading, entitled "Cross
Grain" applies to cross grain, duh. I wasn't familiar with the terms cross
grain and vertical grain when I first read 43.13, although I know about the
properties associated with each. Thanks for replying with an appropriate restatement
of the obvious. I kind of came to the realization that vertical grain
would be the better choice of grains and had made up my mind to disregard the
4 face rule for inspecting my wood if grain is vertical. ...I still have 22
pieces with missing chunks and knots but at least I can rest assured that my
decision to use stuff with no grain lines on the side was the right one. Well,
it's all about learning and this was a good lesson.
Thanks!!!!
--------
Glenn Thomas
N?????
http://www.flyingwood.com
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=28975#28975
Message 12
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| Subject: | Re: tire pressure |
--> Pietenpol-List message posted by: "Mark Blackwell" <markb1958@verizon.net>
Oscar I know full well what you mean being married to an engineer. To make
matters worse, her dad was in construction. She sees something is a 1/16th
off and IT'S OFF. I see a 1/16th off an think that ain't bad and if I need
to I can adjust later. LOL
----- Original Message -----
From: "Oscar Zuniga" <taildrags@hotmail.com>
Sent: Monday, April 17, 2006 2:40 PM
Subject: Pietenpol-List: tire pressure
> --> Pietenpol-List message posted by: "Oscar Zuniga"
> <taildrags@hotmail.com>
>
> Mikee wrote-
>
>>What I like to do is kneel down and sight down the tire tread at ant
>>level.
>
> Do you know what this does to an engineer? Drives him/her nuts!!! We
> need values, numbers, tangibles, measurables! None of this touchy-feely
> stuff that you can't measure with something. It's like standing an
> engineer in a round room and telling him to go stand in the corner...
> drives us nuts ;o)
>
> Now Hans gave me something that I can write down, measure, and define.
> Thank you, Hans... and Mikee- go stand in the corner at ant level ;o)
>
> Oscar Zuniga ( do not archive )
> San Antonio, TX
> mailto: taildrags@hotmail.com
> website at http://www.flysquirrel.net
>
>
> http://www.matronics.com/Navigator?Pietenpol-List
> http://wiki.matronics.com
>
>
>
Message 13
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--> Pietenpol-List message posted by: "Bill Church" <eng@canadianrogers.com>
The things THIS engineer likes about Mike's method are:
1. No need for a pressure gauge to check your tires.
2. No need to try and remember more numbers. (I hate trying to
remember numbers)
3. Gives you the right pressure for your particular application
(heavier plane = more pressure).
Of course, this assumes that Mike's method is valid... So, to check, all
we would need to know is the recommended pressure...
Bill C.
Do not archive
Message 14
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| Subject: | (OT) Moving to Orlando, FL? |
--> Pietenpol-List message posted by: "Richard T. Perry" <perryrt@hotmail.com>
Folks - I've recently accepted a position working in Orlando, FL. I'd love
to talk to anyone who lives in the area about both the city in general and
the GA/homebuilding "scene" in particular. Particularly, I'd be interested
in finding a GA airport in the area with reasonable hangar space/costs (so I
can finally start the aircraft project I've been planning now for some
years.)
Please contact me off the list if you have any comments - I'd love to hear
them!
Do not archive, please.
Regards,
Richard T. Perry perryrt@hotmail.com
"Fraser, there's a guy on my corner who asks me every
morning if I've seen God; do you really think he
expects me to point Him out?"
"Well, you know, Ray, if you did, perhaps he'd stop
asking."
Ray Vecchio and Benton Fraser, "Hawk and a Handsaw", Due_South
Message 15
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| Subject: | Re: Wood Sources |
--> Pietenpol-List message posted by: Michael Nadeau <nadeau@caldsl.com>
Hi,
I'm just starting my project and bought enough rough cut wood for
ribs and tail. I tried some sample cuts on my table saw but didn't
like the results. I need a joiner to square up the sides which I'll
get when Sam sends me my refund check. (Just like my Dad always
says). To cut up the cap strips use this trick with your table saw.
Use two blades with a 1/2 or 1/4 spacer in between. It cuts all the
pieces the same. Be sure to use a push stick!
Mike Nadeau
On Apr 17, 2006, at 12:54 PM|Apr 17, 2006, Glenn Thomas wrote:
> --> Pietenpol-List message posted by: "Glenn Thomas"
> <glennthomas@flyingwood.com>
>
> Great response. You answered my question. I thought about the
> vertical grain and ring count problem and started to realize that
> if the grain is vertical you CAN'T have rings showing on the side.
> I guess I was looking so hard I couldn't see what was right in
> front of me. The section I was reading, entitled "Cross Grain"
> applies to cross grain, duh. I wasn't familiar with the terms
> cross grain and vertical grain when I first read 43.13, although I
> know about the properties associated with each. Thanks for
> replying with an appropriate restatement of the obvious. I kind of
> came to the realization that vertical grain would be the better
> choice of grains and had made up my mind to disregard the 4 face
> rule for inspecting my wood if grain is vertical. ...I still have
> 22 pieces with missing chunks and knots but at least I can rest
> assured that my decision to use stuff with no grain lines on the
> side was the right one. Well, it's all about learning and this was
> a good lesso!
> n.
>
> Thanks!!!!
>
> --------
> Glenn Thomas
> N?????
> http://www.flyingwood.com
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=28975#28975
>
>
Message 16
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| Subject: | Re: tire pressure |
--> Pietenpol-List message posted by: "Catdesign" <catdesign@intergate.com>
Oscar, I'm an Engineering Geologist, which is kind of like the middle man
for an engineer and a geologist. I take the vague, but totally accurate,
science of geology, (put three geologist in a room and you'll get four
answers, one from each geologist and their consensus opinion, all of which
are just as correct as the other), and I put in words the number crunching
black voodoo art practicing engineers can understand (I always love to point
out that their precise four decimal place answer started with data rounded
to the nearest inch and three people counting the same number rarely get the
same answer).
So Oscar, let me see if I can put it in a way you will under stand.
A tire should have a tire pressure where 99.5 +/- 0.5 tire tread units, as
measured perpendicular to the long axis of the rotating mass, are in contact
with the surface at standard load. All pressures should be within 97
percent of the average of five pressure tests, taken after inflating and
deflating each tire five times in the lab (hanger) to the 99.5 +/- 0.5 tread
contact. A new pressure curve shall be established when the temperature
changes +/- 20 degrees or every 60 days, which ever occurs first. All tire
pressure measurement not meeting the specifications shall be inflated or
deflated until 99.5 +/- tire tread units are in contact.
Hope this helps
Chris Tracy
Sacramento, Ca
Do not archive
----- Original Message -----
From: "Oscar Zuniga" <taildrags@hotmail.com>
Sent: Monday, April 17, 2006 11:40 AM
Subject: Pietenpol-List: tire pressure
> --> Pietenpol-List message posted by: "Oscar Zuniga"
> <taildrags@hotmail.com>
>
> Mikee wrote-
>
>>What I like to do is kneel down and sight down the tire tread at ant
>>level.
>
> Do you know what this does to an engineer? Drives him/her nuts!!! We
> need values, numbers, tangibles, measurables! None of this touchy-feely
> stuff that you can't measure with something. It's like standing an
> engineer in a round room and telling him to go stand in the corner...
> drives us nuts ;o)
>
> Now Hans gave me something that I can write down, measure, and define.
> Thank you, Hans... and Mikee- go stand in the corner at ant level ;o)
>
> Oscar Zuniga ( do not archive )
> San Antonio, TX
> mailto: taildrags@hotmail.com
> website at http://www.flysquirrel.net
>
>
> http://www.matronics.com/Navigator?Pietenpol-List
> http://wiki.matronics.com
>
>
>
Message 17
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| Subject: | Re: tire pressure |
In a message dated 4/17/2006 11:54:26 AM Central Standard Time,
taildrags@hotmail.com writes:
So, who is running what tire pressure in non-motorcycle tires, Cub style
gear?
I have Carlisle, Tube Type 8.00 - 6 Turf Tires from Wicks ($30 each), and
they list max inflation at 20 psi. I keep them at about 15 psi.
Chuck G.
NX770CG
Message 18
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| Subject: | Re: Wood Sources |
--> Pietenpol-List message posted by: "Catdesign" <catdesign@intergate.com>
you need to use multiple feather boards, a good sharp 60 tooth thin kerf saw
blade, cost about $50 or more, and a splitter. Run the wood through it at a
constant feed rate. It this doesn't work then perhaps the arbor is not
tracking strait and/or you have to much vibration and/or your fence is not
aligned to the blade.
Chris Tracy
Sacramento, Ca
----- Original Message -----
From: "Michael Nadeau" <nadeau@caldsl.com>
Sent: Monday, April 17, 2006 9:12 PM
Subject: Re: Pietenpol-List: Re: Wood Sources
> --> Pietenpol-List message posted by: Michael Nadeau <nadeau@caldsl.com>
>
> Hi,
>
> I'm just starting my project and bought enough rough cut wood for ribs
> and tail. I tried some sample cuts on my table saw but didn't like the
> results. I need a joiner to square up the sides which I'll get when Sam
> sends me my refund check. (Just like my Dad always says). To cut up the
> cap strips use this trick with your table saw. Use two blades with a 1/2
> or 1/4 spacer in between. It cuts all the pieces the same. Be sure to
> use a push stick!
>
> Mike Nadeau
>
>
> On Apr 17, 2006, at 12:54 PM|Apr 17, 2006, Glenn Thomas wrote:
>
>> --> Pietenpol-List message posted by: "Glenn Thomas"
>> <glennthomas@flyingwood.com>
>>
>> Great response. You answered my question. I thought about the vertical
>> grain and ring count problem and started to realize that if the grain is
>> vertical you CAN'T have rings showing on the side. I guess I was
>> looking so hard I couldn't see what was right in front of me. The
>> section I was reading, entitled "Cross Grain" applies to cross grain,
>> duh. I wasn't familiar with the terms cross grain and vertical grain
>> when I first read 43.13, although I know about the properties
>> associated with each. Thanks for replying with an appropriate
>> restatement of the obvious. I kind of came to the realization that
>> vertical grain would be the better choice of grains and had made up my
>> mind to disregard the 4 face rule for inspecting my wood if grain is
>> vertical. ...I still have 22 pieces with missing chunks and knots but
>> at least I can rest assured that my decision to use stuff with no grain
>> lines on the side was the right one. Well, it's all about learning and
>> this was a good lesso!
>> n.
>>
>> Thanks!!!!
>>
>> --------
>> Glenn Thomas
>> N?????
>> http://www.flyingwood.com
>>
>>
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=28975#28975
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
>
> http://www.matronics.com/Navigator?Pietenpol-List
> http://wiki.matronics.com
>
>
>
Message 19
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| Subject: | Re: thinking like an engineer |
I used Mike's method, to come up with 15 psi in my tires, and quite often use
the LAR type engineering...Looks About Right !!
Chuck G.
do not archive
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