Today's Message Index:
----------------------
1. 04:10 AM - Re: Re: Bob's Pietenpol flies (Michael Perez)
2. 05:02 AM - Wing Strut Cable Size/Type (Michael Perez)
3. 08:04 AM - Brodhead 2014 (Hans van der Voort)
4. 12:16 PM - Re: Wing Strut Cable Size/Type (AircamperN11MS)
5. 02:36 PM - Scott's Plane (Catdesigns)
6. 04:27 PM - Re: Re: Wing Strut Cable Size/Type (Michael Perez)
7. 06:42 PM - Re: Scott's Plane (Ray Krause)
8. 06:58 PM - Re: Scott's Plane (AircamperN11MS)
9. 07:09 PM - Re: Wing Strut Cable Size/Type (AircamperN11MS)
10. 07:59 PM - Re: Re: Wing Strut Cable Size/Type (Dennis Vetter)
11. 08:07 PM - Re: Scott's Plane (taildrags)
12. 08:28 PM - Re: Wing Strut Cable Size/Type (taildrags)
13. 08:34 PM - Re: Scott's Plane (AircamperN11MS)
14. 08:36 PM - Re: Re: Wing Strut Cable Size/Type (Gary Boothe)
15. 09:07 PM - Re: Wing Strut Cable Size/Type (taildrags)
Message 1
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| Subject: | Re: Bob's Pietenpol flies |
=0AI like the new cooling eyebrows a lot Oscar. In one of the Bingelis' boo
ks, he talks about how to figure out the required size cooling opening for
a given engine H.P. I used his thoughts/ideas while fabricating mine. =0A
=0A-=0A=0AIf God is your co-pilot...switch seats. =0AMike Perez =0AKareta
ker Aero =0ASTILL Building...=0A
Message 2
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| Subject: | Wing Strut Cable Size/Type |
Looking ahead to making the wing strut cross cables, I believe most use 1/8
", but I see the plans say 3/32".- I would like to use 3/32",- 7X19 S.S
. as I already have the cable, cable ends and turnbuckles. However, I am no
t sure this cable has adequate strength. Please advise.=0A=0A-=0A=0AIf Go
d is your co-pilot...switch seats. =0AMike Perez =0AKaretakerAero=0ASTILL B
uilding... =0A
Message 3
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It just so happened that I will be traveling the week of the Brodhead Fly-i
n=0AThe return trip will be trough Chicago (ORD) on Thursday 7/24.=0AI deci
ded against my own desire, no longer to drive to a Fly-in, to rent a car in
Chicago and drive the 2 hours to Brodhead.=0AIf any one needs a ride: I wi
ll be departing Chicago O'Hare around noon.=0AAnd returning Saturday-morn
ing 7/26.=0A-=0AStaying at Americ Inn in Monroe=0A-=0ASee you all in Br
odhead.=0A-=0A-=0AHans van der Voort=0A-=0APietenpol NX15KV=0AWaller,
Texas
Message 4
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| Subject: | Re: Wing Strut Cable Size/Type |
Mike,
I am not a structural engineer but I am an EAA Tech Counselor. Since this list
has been very quiet lately I will speak up with my own opinion. If you are going
to use a low horsepower engine like the model A or 65 Cont., I think the
smaller cables would be acceptable. Now if you are going to use a Corvair or
Cont. C-85 or O-200, I would be wanting the larger cables so I could sleep at
night knowing they will handle the potential heavier air loads. With the bigger
engines we can carry larger loads adding to the wing loading.
My question to the guys flying the Corvairs, Do you have the small cables on yours
and have you had any trouble with them?
I have a C-85 Cont. and have 1/8 inch cables all around.
My three cents.
--------
Scott Liefeld
Flying N11MS since March 1972
Steel Tube
C-85-12
Wire Wheels
Brodhead in 1996
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=424223#424223
Message 5
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My brother sent me this picture of Scott Liefeld plane parked at a fly-in over
the weekend. Notice how many people are are around Scott's plane versus to the
ones in the background. People know whats good.
If you attend the West Coast Pietenpol Gathering at Frazier Lake this Saturday
you too can see this unique bird.
--------
Chris
Sacramento, CA
WestCoastPiet.com
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=424236#424236
Attachments:
http://forums.matronics.com//files/photo_4_111.jpg
Message 6
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| Subject: | Re: Wing Strut Cable Size/Type |
Thank you Scott. I am using an A65. I am curious if there was a reason most people
switched from the plans 3/32" to 1/8" cable. Were there issues/ concerns that
made the switch necessary?
If God is your co-pilot...switch seats.
Mike Perez
Karetaker Aero
STILL Building...
Message 7
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| Subject: | Re: Scott's Plane |
Beautiful! Can't wait to see it in person this weekend.
Thanks,
Ray Krause
Sent from my iPad
> On Jun 2, 2014, at 2:33 PM, "Catdesigns" <Catdesigns@att.net> wrote:
>
>
> My brother sent me this picture of Scott Liefeld plane parked at a fly-in over
the weekend. Notice how many people are are around Scott's plane versus to
the ones in the background. People know whats good.
>
> If you attend the West Coast Pietenpol Gathering at Frazier Lake this Saturday
you too can see this unique bird.
>
> --------
> Chris
> Sacramento, CA
> WestCoastPiet.com
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=424236#424236
>
>
>
>
> Attachments:
>
> http://forums.matronics.com//files/photo_4_111.jpg
>
>
>
>
>
>
>
Message 8
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| Subject: | Re: Scott's Plane |
Chris,
You failed to mention that your brother flew with me to the fly in. We had a blast.
About 60 airplanes there. When we were leaving someone came up to me and
asked if it was my plane. I answered with a yes. He said follow me.
Now this is where it gets strange and I'm sure a first for any Pietenpol anywhere.
They gave me a second place plaque in the "Contemporary Class". They said
because of the year we built it. I found and it very humorous and I was honored
at the same time.
See you all this weekend. I'll be there on Friday afternoon with bugs in my teeth.
Cheers,
--------
Scott Liefeld
Flying N11MS since March 1972
Steel Tube
C-85-12
Wire Wheels
Brodhead in 1996
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=424253#424253
Message 9
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| Subject: | Re: Wing Strut Cable Size/Type |
Mike,
With that engine and the availability of said parts I don't see a reason to use
the 1/8 inch stuff. I'll say it again. There has never been an inflight structural
failure of a Piet. Just make sure you use jury struts. The cables you are
asking about are there to keep the wing square on the fuselage. That is their
big job. Mr Pietenpol was a very smart man. Keep up the good work.
Other opinions are most certainly welcome.
--------
Scott Liefeld
Flying N11MS since March 1972
Steel Tube
C-85-12
Wire Wheels
Brodhead in 1996
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=424254#424254
Message 10
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| Subject: | Re: Wing Strut Cable Size/Type |
Sent from my U.S. Cellular=C2=AE smartphone
Michael Perez <speedbrake@sbcglobal.net> wrote:
Thank you Scott. I am using an A65. I am curious if there was a reason most
people switched from the plans 3/32" to 1/8" cable. Were there issues/ con
cerns that made the switch necessary?
If God is your co-pilot...switch seats.
Mike Perez
Karetaker Aero
STILL Building...
Message 11
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| Subject: | Re: Scott's Plane |
I am greatly intrigued by those ailerons! They look like Frise style, and in any
case those are the stubbiest aileron control horns I've seen on any of these
Piet or Grega airplanes.
--------
Oscar Zuniga
Medford, OR
Air Camper NX41CC "Scout"
A75 power
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=424257#424257
Message 12
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| Subject: | Re: Wing Strut Cable Size/Type |
I had never noticed that there is a difference between the plans and common practice.
Hmmm... I've always looked at my 1/8" brace cables and gotten a warm fuzzy
feeling from them keeping everything square and taut out there. They twang
with a nice low 'thummm' that sounds strong to me. I checked the catalog strength
and 1/8" provides twice the breaking strength (2000 lbs) as 3/32" (1000).
If you figure each of the four wires is about 10' long and the difference
in weight is about .012 lb/ft, you're looking at a total difference of about
a half-pound between using the two different diameters. Maybe a bit more if you
figure the thimbles and nicopress sleeves for the two sizes.
It's your call. I'd be curious to hear from any others who are flying Piets with
the smaller diameter wires. And like Scott, I would say if you're flying a
higher-powered ship, go with the 1/8". Drag increases as the square of velocity,
so if an A65 Piet cruises at 65 and a Corvair Piet cruises at 75, the Corvair
Piet will experience 33% higher drag force, theoretically. If the 3/32"
wire had a safety factor of 2 on the A65 Piet, with higher cruise drag on the
wings the safety factor would decrease to about 1.5 if the A65 was replaced with
a Corvair. Or something like that.
--------
Oscar Zuniga
Medford, OR
Air Camper NX41CC "Scout"
A75 power
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=424260#424260
Message 13
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| Subject: | Re: Scott's Plane |
Good eye Oscar,
My airplane is a bit of a hybrid. The wings are built from cub parts using the
"Reed Clipped Wing Cub Plans" with Piet type wing tips. It has a great roll rate
and the ailerons are as you describe. I have a very different snowflake. I
think snowflake is how Mike Cuy describes them.
--------
Scott Liefeld
Flying N11MS since March 1972
Steel Tube
C-85-12
Wire Wheels
Brodhead in 1996
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=424261#424261
Message 14
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| Subject: | Re: Wing Strut Cable Size/Type |
Mine is Corvair powered and 3/32 throughout...everything! No broken cables yet...
Gary
NX308MB
Sent from my iPhone
> On Jun 2, 2014, at 8:28 PM, "taildrags" <taildrags@hotmail.com> wrote:
>
>
> I had never noticed that there is a difference between the plans and common practice.
Hmmm... I've always looked at my 1/8" brace cables and gotten a warm
fuzzy feeling from them keeping everything square and taut out there. They twang
with a nice low 'thummm' that sounds strong to me. I checked the catalog
strength and 1/8" provides twice the breaking strength (2000 lbs) as 3/32" (1000).
If you figure each of the four wires is about 10' long and the difference
in weight is about .012 lb/ft, you're looking at a total difference of about
a half-pound between using the two different diameters. Maybe a bit more if
you figure the thimbles and nicopress sleeves for the two sizes.
>
> It's your call. I'd be curious to hear from any others who are flying Piets
with the smaller diameter wires. And like Scott, I would say if you're flying
a higher-powered ship, go with the 1/8". Drag increases as the square of velocity,
so if an A65 Piet cruises at 65 and a Corvair Piet cruises at 75, the Corvair
Piet will experience 33% higher drag force, theoretically. If the 3/32"
wire had a safety factor of 2 on the A65 Piet, with higher cruise drag on the
wings the safety factor would decrease to about 1.5 if the A65 was replaced
with a Corvair. Or something like that.
>
> --------
> Oscar Zuniga
> Medford, OR
> Air Camper NX41CC "Scout"
> A75 power
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=424260#424260
>
>
>
>
>
>
>
>
>
>
Message 15
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| Subject: | Re: Wing Strut Cable Size/Type |
Gary; that's only because you haven't put your airplane into a do-or-die dive straight
for a Hun ammo train racing for the border, with only you and your airplane
between the enemy howitzers and the rounds that they so desperately need
to stop the Allied advance!
Will you hear the loud complaining of those over-stressed cables as the airspeed
climbs over 95 to 100, and then even unbelievably touches 105 as the locomotive
comes into your sights- and your altimeter unwinding so fast that the needles
are a blur?
And will you be able to safely pull it out after sending your bomb straight for
the locomotive's boiler? I'll bet you'll be wishing you had that extra 1/32"
of diameter that you left on the cable spool at the hangar... ;o)
--------
Oscar Zuniga
Medford, OR
Air Camper NX41CC "Scout"
A75 power
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=424264#424264
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