Today's Message Index:
----------------------
1. 06:33 AM - Piet Wreck (kevinpurtee)
2. 07:34 AM - Re: Piet Wreck (j_dunavin)
3. 08:31 AM - New cylinder - low oil pressure? (Oscar Zuniga)
4. 08:58 AM - Re: Re: New cylinder - low oil pressure? (John Recine)
5. 10:01 AM - Re: Re: New cylinder - low oil pressure? (Jeff wilson)
6. 11:47 AM - Re: New cylinder - low oil pressure? (Dan Yocum)
7. 01:50 PM - Re: New cylinder - low oil pressure? (Greg Cardinal)
8. 03:44 PM - Re: Re: Continental A75 Eyebrows (Rick Holland)
9. 05:03 PM - Re: Re: Continental A75 Eyebrows (Dan Yocum)
10. 07:37 PM - Re: Blast cabinet impressions (Chris)
Message 1
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We were parked next to a nice Piet at the recent Ranger, TX fly-in. On his way
home he took off without full fuel. He ended up landing short of his destination
due to gas with no incident. He got gas and then balled it up on takeoff.
I don't believe he was injured. Here's the NTSB link courtesy of lurker Matt
Wash:
http://ntsb.gov/ntsb/brief2.asp?ev_id 100602X24234&ntsbno=CEN10CA288&akey=1
BTW: if he checks this forum, I'd like him to contact me at kevin.purtee@us.army.mil.
I gave his partner some money for a brass Piet plate & I'd like to get
it.
--------
Kevin Purtee
NX899KP
Austin/Georgetown, TX
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=304390#304390
Message 2
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At least he is ok, but what a tragedy.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=304399#304399
Message 3
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| Subject: | New cylinder - low oil pressure? |
I think I'd change out the oil pressure gauge.
Oscar Zuniga
Air Camper NX41CC
San Antonio, TX
mailto: taildrags@hotmail.com
website at http://www.flysquirrel.net
Message 4
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| Subject: | Re: New cylinder - low oil pressure? |
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Message 5
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| Subject: | Re: New cylinder - low oil pressure? |
Remember fluid will not compress but air will, so if there's air in the li
ne or the gauge that may explain it.
Message 6
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| Subject: | Re: New cylinder - low oil pressure? |
Already ordered a new one from ACS this morning.
I can see where air in the line would cause the popping and bouncing
around, but after a while it should reach a steady state that should
equal the actual pressure of the system, right?
Anyway, changing the spring back isn't that big of a deal, so while I
wait for the gauge, I'll try that.
On a similar note, I don't own the Bingelis "Firewall Forward" tome - is
there any sage advice in there on how to properly connect or bleed the
oil pressure line to the gauge?
Thanks,
Dan
On 07/10/2010 10:23 AM, Oscar Zuniga wrote:
> --> Pietenpol-List message posted by: Oscar Zuniga<taildrags@hotmail.com>
>
>
> I think I'd change out the oil pressure gauge.
>
> Oscar Zuniga
> Air Camper NX41CC
> San Antonio, TX
> mailto: taildrags@hotmail.com
> website at http://www.flysquirrel.net
>
>
--
Dan Yocum
Fermilab 630.840.6509
yocum@fnal.gov, http://fermigrid.fnal.gov
"I fly because it releases my mind from the tyranny of petty things."
Message 7
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| Subject: | Re: New cylinder - low oil pressure? |
Dan,
You can bleed the oil pressure line by SLIGHTLY loosening the connection
fitting at the gauge with the engine running. About 1/4 to 1/2 turn is all
you need. As soon as you get a drop or two of oil simply re-tighten the
fitting. It will only take a few seconds.
Greg C.
----- Original Message -----
From: "Dan Yocum" <yocum@fnal.gov>
Sent: Saturday, July 10, 2010 1:46 PM
Subject: Re: Pietenpol-List: New cylinder - low oil pressure?
>
> Already ordered a new one from ACS this morning.
>
> I can see where air in the line would cause the popping and bouncing
> around, but after a while it should reach a steady state that should equal
> the actual pressure of the system, right?
>
> Anyway, changing the spring back isn't that big of a deal, so while I wait
> for the gauge, I'll try that.
>
> On a similar note, I don't own the Bingelis "Firewall Forward" tome - is
> there any sage advice in there on how to properly connect or bleed the oil
> pressure line to the gauge?
>
> Thanks,
> Dan
>
>
> On 07/10/2010 10:23 AM, Oscar Zuniga wrote:
>> --> Pietenpol-List message posted by: Oscar
>> Zuniga<taildrags@hotmail.com>
>>
>>
>> I think I'd change out the oil pressure gauge.
>>
>> Oscar Zuniga
>> Air Camper NX41CC
>> San Antonio, TX
>> mailto: taildrags@hotmail.com
>> website at http://www.flysquirrel.net
>>
>>
>>
>
> --
> Dan Yocum
> Fermilab 630.840.6509
> yocum@fnal.gov, http://fermigrid.fnal.gov
> "I fly because it releases my mind from the tyranny of petty things."
>
>
>
Message 8
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| Subject: | Re: Continental A75 Eyebrows |
Have aluminum eyebrows on my Corvair also that will probably start cracking
after a few hundred hours too. The third law of thermodynamics - nature
tends toward increased randomness, and a cracked eyebrow (or anything else)
is more random than a perfect one.
rick
On Thu, Jul 8, 2010 at 7:24 AM, taildrags <taildrags@hotmail.com> wrote:
>
> It's not evident from the camera angle, but if you want the leading edges
> of the eyebrows to be even with each other and equidistant from the rear of
> the prop, one eyebrow will be longer/deeper than the other.
>
> I hadn't thought of using doublers on the tabs. Others have mentioned
> making the tabs out of steel so that was what I was going to do instead of
> continuing to fuss with aluminum and fatigue cracks. However, I also found
> a crack in the metal "L"-piece that mounts to the top of the engine, that
> the aluminum eyebrow attaches to by the engine case parting line and that
> piece is light gauge steel. Vibration and the pulsing beat of the propwash
> take their toll.
>
> Maybe I should ditch this shaky old antique 4-banger and go with a smooth
> 6-cylinder Corvair instead ;o)
>
> --------
> Oscar Zuniga
> San Antonio, TX
> Air Camper NX41CC
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=304169#304169
>
>
--
Rick Holland
Castle Rock, Colorado
"Logic is a wreath of pretty flowers, that smell bad"
Message 9
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| Subject: | Re: Continental A75 Eyebrows |
Mine haven't started cracking at the tabs, but they're reinforced. I'm sure
they're original - 420+ hours:
http://5n429glenoak.homelinux.net/gallery/v/airplanes/N8031/img_2551.jpg.htm
l?g2_imageViewsIndex=1
--
yocum@gmail.com
On Jul 10, 2010, at 5:44 PM, Rick Holland <at7000ft@gmail.com> wrote:
> Have aluminum eyebrows on my Corvair also that will probably start crackin
g after a few hundred hours too. The third law of thermodynamics - nature te
nds toward increased randomness, and a cracked eyebrow (or anything else) i
s more random than a perfect one.
>
> rick
>
> On Thu, Jul 8, 2010 at 7:24 AM, taildrags <taildrags@hotmail.com> wrote:
>
> It's not evident from the camera angle, but if you want the leading edges o
f the eyebrows to be even with each other and equidistant from the rear of t
he prop, one eyebrow will be longer/deeper than the other.
>
> I hadn't thought of using doublers on the tabs. Others have mentioned mak
ing the tabs out of steel so that was what I was going to do instead of cont
inuing to fuss with aluminum and fatigue cracks. However, I also found a cr
ack in the metal "L"-piece that mounts to the top of the engine, that the al
uminum eyebrow attaches to by the engine case parting line and that piece is
light gauge steel. Vibration and the pulsing beat of the propwash take the
ir toll.
>
> Maybe I should ditch this shaky old antique 4-banger and go with a smooth 6
-cylinder Corvair instead ;o)
>
> --------
> Oscar Zuniga
> San Antonio, TX
> Air Camper NX41CC
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=304169#304169
>
>
>
>
>
>
>
> ==========
> st" target="_blank">http://www.matronics.com/Navigator?Pietenpol-List
> ==========
> http://forums.matronics.com
> ==========
> le, List Admin.
> ="_blank">http://www.matronics.com/contribution
> ==========
>
>
>
>
>
>
> --
> Rick Holland
> Castle Rock, Colorado
>
> "Logic is a wreath of pretty flowers, that smell bad"
>
>
==========================
=========
==========================
=========
==========================
=========
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=========
>
Message 10
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| Subject: | Blast cabinet impressions |
Jim
I have built 3 different blast cabinets based loosely on the Chris Bobka
design paper on my web page. You can see the first two here.
http://westcoastpiet.com/chris_tracy.htm
The third one is my best design yet. See attached pictures
I have very little room for things in the garage so I built my blaster to
hang on the wall next to the powder coating oven. To save space below it
for the band saw, I elected to push the media back into a supply well
hanging off the bottom. It is made out of 3/8th inch plywood I had lying
around. The plywood on the back does show some wear. I think if this one
wears out, I will build one out of metal, but I will probably just glue a
piece of metal on the back and it will last for ever. I am surprised how
much I use it and cant imagine welding without one.
I used safety glass on the first box but it frosted over and was expensive
to replace. Since my second box I have used Plexiglas. I have been using
the same piece of Plexiglas for 3 years and you can see in the picture it is
still very clear. The trick is to cover it with clear plastic wrap used to
cover food. Replace the plastic when it frosts over. With my setup as long
as I don't blast directly at the plastic it will last a long long time. I
made it easy to remove the Plexiglas so I can replace the plastic wrap.
The homemade light sits on top of the box on the outside It has another
Plexiglas window the full length of the cabinet but this one is protected by
a piece of plastic used for florescent ceiling lights. This is the best
lighted blast cabinet I have ever used.
I run a 20 gallon 5 hp 100% duty cycle compressor set to 80 psi. I have
trouble with water developing in my air supply when I use it hard. I liked
the Campbell Hosfeld gun I wore out much better then the gun I have now.
I can't imagine it cost me over $50 to build.
Chris
Sacramento, Ca
Westcoastpiet.com
-----Original Message-----
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Jim Ash
Sent: Thursday, July 08, 2010 8:36 AM
Subject: Pietenpol-List: Blast cabinet impressions
Last week I printed off some of the material on westcoastpiet.com for later
perusal. I've been sick this week, so I've had the opportunity to catch up
on some of it as I try to behave myself and get well. I've been reading the
article about the wooden cabinet sandblaster and this has been a tool on my
list for some time. I bought a 55-gallon drum a couple years ago with the
intentions of cobbling together a blast cabinet, but I think I like this
wood one better as I read about it.
I was curious if anybody (Jim Markle?) here has built and used one of these
enough to be able to comment on its up and down sides.
Jim Ash
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