Today's Message Index:
----------------------
1. 04:08 AM - Visit with Chuck Campbell (Jim Markle)
2. 04:46 AM - covered wheels (Douwe Blumberg)
3. 05:34 AM - Re: VNE at cruise- bungees versus springs landing gear (Steven Dortch)
4. 05:51 AM - Re: VNE at cruise- bungees versus springs landing gear (Bill Church)
5. 06:41 AM - Re: VNE at cruise- bungees versus springs landing gear (woodflier)
6. 06:39 PM - Re: VNE at cruise- bungees versus springs landing gear (jarheadpilot82)
7. 07:29 PM - Re: Visit with Chuck Campbell (taildrags)
Message 1
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| Subject: | Visit with Chuck Campbell |
I had a very special experience last evening. I had the pleasure of meeting
Chuck Campbell. Really enjoyed checking out his very close to plans (and r
eady to cover) Pietenpol Air Camper. A very special gentleman.
What a treat!
Even walked out the door with a neat Pietenpol clock! Oh relax, he gave it t
o me!
Seriously, I am honored to have spent an evening with my new Pietenpol frien
d and WW II veteran Chuck Campbell.
Jim Markle
Sent from my smartphone.
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I never flew RE-PIET without covered wheels so I can't compare before and
after. However, she seems to perform pretty straightforwardly and I have
big honkin' wheels!
Douwe
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| Subject: | Re: VNE at cruise- bungees versus springs landing gear |
Gary, you are firing blank rounds.
Steve D
On Thu, Feb 19, 2015 at 10:54 PM, Gary Boothe <gboothe5@comcast.net> wrote:
>
>
> *
>
>
> *
>
>
--
Blue Skies,
Steve D
Message 4
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| Subject: | Re: VNE at cruise- bungees versus springs landing gear |
Charles,
Did the experienced pilot/instructor give any reasons for recommending bungees
over springs?
Aside from nostalgia, and keeping the 1930's look (which is a valid reason), I
can't think of any practical reason.
Bill C.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=438527#438527
Message 5
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| Subject: | Re: VNE at cruise- bungees versus springs landing gear |
I built my Piet with the bungee shocks and had a partial gear collapse when
one leg overextended. The safety cable was just a bit too long and I neede
d to add more bungee cords to the shocks. The following winter I built die
spring shocks and have had no problems since. You don't have to worry about
the hassle of checking and replacing the cords every few years. And, I lik
e that the springs work in compression rather than the cords being in tensi
on.
Matt Paxton
NX629ML
-----Original Message-----
From: Charles Burkholder <born2fly@abcmailbox.net>
Sent: Thu, Feb 19, 2015 8:57 pm
Subject: Re: Pietenpol-List: VNE at cruise- bungees versus springs landing
gear
Regarding bungee or spring landing gear. I am half done my split axle land
ing gear but not at quite the shock absorbers. I am leaning towards using s
teel spring due to the low maintenance "build, fly and forget" it offers. I
was talking to a very experienced tailwheel pilot and instructor (not a ho
mebuilder) about it and he recommended bungees.
Could I have any input on the pro's and con's of each? How many of you bui
lders have made the switch after your piet was built and why? If anything i
t might add 1 knot to the cruise speed!
On 2/19/2015 9:31 AM, Boatright, Jeffrey wrote:
Switching from canvas-covered bungees to springs definitely changed how my
Piet behaves when I throttle back for descent in the pattern. With the bung
ees, the nose really dropped when I pulled the throttle to idle. This effec
t is much less pronounced after we switched to springs.
--
Jeffrey H. Boatright, PhD, FARVO
Professor of Ophthalmology
Emory University School of Medicine
From: Douwe Blumberg < douweblumberg@earthlink.net>
nics.com>
Date: Thursday, February 19, 2015 at 9:19 AM
To: " pietenpol-list@matronics.com" < pietenpol-list@matronics.c
om>
Subject: Pietenpol-List: VNE at cruise
About the only way I can imagine my Piet exceeding VNE at cruise is with a
JATO pack strapped between the wheels!
In all seriousness, I think aerodynamic mods are fine if they don=99t
add weight and you find it an enjoyable pursuit. After all, fun is why we
build these things. However, don=99t expect too much from them and
I=99ve often wondered if the extra effort and time added building, is
worth an extra 3 kts cruising speed. I mean, when I=99m chugging ar
ound for my average 30 minute summer flight, I couldn=99t care less h
ow fast I=99m going. The ONLY time I ever wish I had a few extra kts
of speed is going to Brodhead, but even then it would only shave off ten-f
ifteen minutes or so.
That being said.
I did spend an extra month fairing the axle and covering the wire wheels.
I have NO idea how much it helped having not flown without those mods. The
biggest thing I could do to improve my cruise speed would be to fair or re
shape my wood struts which have a poor aerodynamic shape, but again, I
=99ve weighed the effort against the benefit and decided I=99d rat
her spend the time flying her. I also experimented with some teardrop shap
ed clear plastic tubing to fair the round cables. I did my landing gear ca
bles, then decided against doing the flying wires because it would destroy
the vintage look. But I do think round wires make a ton of drag which cou
ld be at least halved by sleeving them.
I think biggest drag inducers that could actually be helped are: struts, wh
eels, strut connections, axle, windscreens, foot pegs, cables.
$.02
Douwe
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--
Charles Burkholder
Visit my blog @ http://missionmechfund.blogspot.ca/
====
Message 6
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| Subject: | Re: VNE at cruise- bungees versus springs landing gear |
Glen,
Here is a link to a discussion about the replacement of bungees with die springs
written a while back by William Wynne-
http://flycorvair.net/2012/10/27/new-die-spring-landing-gear-on-a-pietenpol-10-a-m-4-p-m/
Below is a copy of the page of the catalog in which I have noted the die springs
I ordered. They were , if memory serves, around $85 or $90, cheaper than I could
find anywhere else. The contact info as at the bottom of the page.
--------
Semper Fi,
Terry Hand
Athens, GA
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=438541#438541
Attachments:
http://forums.matronics.com//files/diamondwirecatalog_dragged_177.pdf
Message 7
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| Subject: | Re: Visit with Chuck Campbell |
Jim: you and Chuck look like a pair of aces. Or... maybe... a pair of jokers?
;o)
By the way, happy birthday, Jim!
--------
Oscar Zuniga
Medford, OR
Air Camper NX41CC "Scout"
A75 power
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=438542#438542
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