Today's Message Index:
----------------------
1. 07:29 AM - Re: new engine (bender)
2. 04:37 PM - Re: Re: new engine (Ray Krause)
3. 05:58 PM - Re: new engine (taildrags)
4. 06:54 PM - Lift struts (Bill R)
5. 07:02 PM - Re: Lift struts (Jack Phillips)
6. 07:44 PM - battery (Steven Dortch)
7. 08:09 PM - Re: Lift struts (Braniff1966)
8. 08:11 PM - Re: Re: new engine (Ray Krause)
9. 08:15 PM - Re: battery (jim hyde)
10. 09:16 PM - Re: battery (Gloriabots)
11. 09:21 PM - Re: battery (Ray Krause)
12. 10:26 PM - Re: Lift struts (dgaldrich)
Message 1
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I carved the prop out of ash. . Following Dan Helspers instructions. I'm heading
over to see if it'll start today.
Jeff
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=430821#430821
Message 2
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Beautiful, single piece of ash?
Thanks, And it will run just fine. Don't forget to safety wire the carb bolts,
if you haven't. I had to check yours because I'm trying to do mine right now,
not easy! Love your crush plate, I have to make one. Not sure what happened
to the one for my engine. I have the prop, spinner, bolts and everything but
the crush plate. I have a friend who can probably make one on his CNC milling
machine.
Let us know how it runs. What mags are you running?
Ray Krause
Sent from my iPad
> On Sep 20, 2014, at 7:28 AM, "bender" <dude@twc.com> wrote:
>
>
> I carved the prop out of ash. . Following Dan Helspers instructions. I'm heading
over to see if it'll start today.
>
> Jeff
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=430821#430821
>
>
>
>
>
>
>
>
>
>
Message 3
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She's a beauty, Jeff. A real beauty. The external aileron cables sure make preflight
inspection easy, and so does the abbreviated cowling that pretty much
puts the entire engine out there where you can look at everything. I've got to
agree with Ray or whoever it was who mentioned safetying the carb it takes more
time to safety everything on a Stromberg than it does to rebuild one ;o)
I just put another 1.0 on Scout this afternoon and like you said with yours, my A75 fired up on the third blade and never missed a beat. We had 99 degrees this afternoon and the oil temp got up to about 195 in the climb to 3000', but the engine is dry as a bone (except for a slight drip from one of the rocker cover gaskets and a couple of drops from the breather after I park) and everything is smooth. For my crush plate I just had my machinist buddy turn a disc from 1/4" aluminum stock and drill for the AN6 bolts, then I sandwiched a replica Continental Motors plate between the bolt heads and crush plate (got it from Wag-Aero) and safetied after torqueing. You can see it at http://www.flysquirrel.net/piets/engine/A75.html
--------
Oscar Zuniga
Medford, OR
Air Camper NX41CC "Scout"
A75 power
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=430850#430850
Message 4
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I am trying to determine what material to use for my lift struts and cabanes.
In the running are 4130 streamline tubing from Aircraft Spruce, aluminum streamline
from Carlson and 4130 tubing streamlined the old fashion way.
It looks like the 4130 streamline tubing from Aircraft Spruce would cost well north
of $1500. Their catalog did not list any load bearing capabilities for the
various sizes of tubing.
The Carlson website does list load bearing capabilities,but in terms I am not familiar
with. The cost savings of aluminum over the steel streamline tubing is
not insignificant.
The old fashion way of streamline steel tubing is not to appealing to me, but I
might be talked into it.
The real questions for me have to do with understanding the loads likely to be
imposed on the lift struts of an Aircamper and whether or not the aluminum strut
material from Carlson is up to the task. I know there is at least one Aircamper
flying with the aluminum struts, Dan Helspers'. Dan and his beautiful plane
were featured in the summer issue of Contact magazine. As the article was not
of an engineering nature there was no mention of any research Dan may have
done before deciding to use the aluminum struts.Not being one to to risk my neck
or anyone else's, I would prefer to have some data before I follow someone
else's example. Any thoughts would be appreciated, but please keep in mind you
will be replying to a simpleton,not an engineer.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=430851#430851
Message 5
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Bill,
Another option (and one that has been used many times, including on my own
Pietenpol), is to find a set of old Piper Cub struts, removed due to AD.
You can cut off the bottom end of the strut where the corrosion is and still
have plenty of good steel left to make a Pietenpol lift strut, since the Cub
struts are about 10' long, but Pietenpol only needs about 8' per strut.
There are a lot of these old struts out there - it just takes a little
perseverence to find them. They are not 4130, but are 1018 mild carbon
steel, and only .035" thick. Still they are plenty strong enough for a
Pietenpol.
Jack Phillips
NX899JP
Smith Mountain Lake, Virginia
-----Original Message-----
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Bill R
Sent: Saturday, September 20, 2014 9:54 PM
Subject: Pietenpol-List: Lift struts
I am trying to determine what material to use for my lift struts and
cabanes.
In the running are 4130 streamline tubing from Aircraft Spruce, aluminum
streamline from Carlson and 4130 tubing streamlined the old fashion way.
It looks like the 4130 streamline tubing from Aircraft Spruce would cost
well north of $1500. Their catalog did not list any load bearing
capabilities for the various sizes of tubing.
The Carlson website does list load bearing capabilities,but in terms I am
not familiar with. The cost savings of aluminum over the steel streamline
tubing is not insignificant.
The old fashion way of streamline steel tubing is not to appealing to me,
but I might be talked into it.
The real questions for me have to do with understanding the loads likely to
be imposed on the lift struts of an Aircamper and whether or not the
aluminum strut material from Carlson is up to the task. I know there is at
least one Aircamper flying with the aluminum struts, Dan Helspers'. Dan and
his beautiful plane were featured in the summer issue of Contact magazine.
As the article was not of an engineering nature there was no mention of any
research Dan may have done before deciding to use the aluminum struts.Not
being one to to risk my neck or anyone else's, I would prefer to have some
data before I follow someone else's example. Any thoughts would be
appreciated, but please keep in mind you will be replying to a simpleton,not
an engineer.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=430851#430851
Message 6
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Gentlemen, and Oscar, I am going to add a battery to run my radio/intercom
as well as my oil pressure and temp gauges.
Any thoughts? I want light, cheap and very effective. If it has much weight
at all, I plan on putting it as far forward as possible. Any input on
forward or behind the firewall.
What battery do you suggest?
--
Blue Skies,
Steve D
Message 7
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any of the choices you talked about are just fine..cub struts are cheap and work
great..
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=430856#430856
Message 8
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Oscar,
Thanks for the lead on the Continental "crush" plate replica from Wag-Aero. Now
we can all copy you! I had seen your crush plate before and admired it.
The shield on the mags did not work. I even insulated the shield around the p lead
terminal, but it still shorted out and made the engine lose power. And, it
did not stop the radio noise, maybe just a little better. Now I have tried everything,
maybe time for some Slick mags. Just another $1600! But thanks to you
and your friend for all the help. The only thing I have not tried is a good,
isolated antenna.
Thanks again,
Ray Krause
Sent from my iPad
> On Sep 20, 2014, at 5:57 PM, "taildrags" <taildrags@hotmail.com> wrote:
>
>
> She's a beauty, Jeff. A real beauty. The external aileron cables sure make
preflight inspection easy, and so does the abbreviated cowling that pretty much
puts the entire engine out there where you can look at everything. I've got
to agree with Ray or whoever it was who mentioned safetying the carb it takes
more time to safety everything on a Stromberg than it does to rebuild one ;o)
>
> I just put another 1.0 on Scout this afternoon and like you said with yours, my A75 fired up on the third blade and never missed a beat. We had 99 degrees this afternoon and the oil temp got up to about 195 in the climb to 3000', but the engine is dry as a bone (except for a slight drip from one of the rocker cover gaskets and a couple of drops from the breather after I park) and everything is smooth. For my crush plate I just had my machinist buddy turn a disc from 1/4" aluminum stock and drill for the AN6 bolts, then I sandwiched a replica Continental Motors plate between the bolt heads and crush plate (got it from Wag-Aero) and safetied after torqueing. You can see it at http://www.flysquirrel.net/piets/engine/A75.html
>
> --------
> Oscar Zuniga
> Medford, OR
> Air Camper NX41CC "Scout"
> A75 power
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=430850#430850
>
>
>
>
>
>
>
>
>
>
Message 9
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make a bracket.. mount it on the engine and look at it thats how it was done
in the day of strong men and weak planes..thats how i did mine..
On Saturday, September 20, 2014 9:50 PM, Steven Dortch <steven.d.dortch@gmail.com>
wrote:
Gentlemen, and Oscar, I am going to add a battery to run my radio/intercom as well
as my oil pressure and temp gauges.
Any thoughts? I want light, cheap and very effective. If it has much weight at
all, I plan on putting it as far forward as possible. Any input on forward or
behind the firewall.
What battery do you suggest?
--
Blue Skies,
Steve D
Message 10
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Steve
A lightweight battery I have found very effective comes from Ballistic Batteries
in US.
It's a LiFePO4 and I went for 4 Cell version weighing in at 0.9 of a pound and
a 2.5 Amp Hour discharge rate.
http://www.ballisticparts.com/product_info.php?cPath=141&products_id=424
Look at this one too: http://www.hobbyking.co.uk/hobbyking/store/uh_viewItem.asp?idProduct=58820
(I think there is a US Store?
Several other larger capacity batteries in Ballistic range and weight always much
less than Lead Acid.
You can charge with a conventional Charger so don't be put off by accessory list.
CAUTION! NEVER LET BATTERY DISCHARGE TO FLAT!
The Cells become unstable and don't charge so 13 Volts becomes 10V!
Please do not inquire about who left Radio on!
Regards
Gerry
p.s. Mine drives an XCOM 760 Panel Mount and an iPhone for navigation.
Message 11
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Message 12
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Here are some data points: The Carlson "large" struts have a yield strength just
a bit more than 11,000 pounds. Using an 8 inch circumference and.035 wall thickness
1018 cold drawn steel for Cub struts gives about 15,000 as a yield strength.
Hot rolled 1018 gives 9,000 pounds.
Notes: I believe that there are 2 sizes of struts on the Cubs with the front being
larger. They also taper a bit at the lower fuselage attachment point so that,
as installed by Piper, they will have a little less strength than a mid-point
cross-section. I'm guessing on the 8 inch circumference but it's pretty
close.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=430862#430862
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