Today's Message Index:
----------------------
1. 07:10 AM - Re: Engine work stand (Marcus Bates)
2. 10:33 AM - Re: Engine work stand (Robin Hou)
3. 06:14 PM - Nanchang Air System (Byron Fox)
4. 06:51 PM - Re: Nanchang Air System (Ernest Martinez)
5. 07:31 PM - Re: Nanchang Air System (av8ter)
6. 07:35 PM - "Airshow"over the Lake today - Yak.... (av8ter)
7. 07:55 PM - Re: Nanchang Air System (Roger Kemp)
Message 1
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| Subject: | Re: Engine work stand |
The prop on the Housai engine has a splined flange that can be unbolted from the
main hub. Find an old, unairworthy prop, remove flange and bolt the flange
to the stand. Kinda like an old A-65 Continental prop flange.
Sent from my iPad
> On Aug 19, 2015, at 9:37 PM, Roger Kemp <f16viperdoc@me.com> wrote:
>
> This is what we used to teardown my YAK 50 engine. Mounted the stand to the prop
flange.
> Doc
>
> <P9090447.JPG>
>
>
>
> Sent from my iPad
> <pre><b><font size=2 color="#000000" face="courier new,courier">
>
>
> </b></font></pre>
Message 2
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| Subject: | Re: Engine work stand |
Thank you Doc, Marcus and Elmar. I think I know where to go from here. Agai
n, thanks for sharing your experience.
On Thursday, August 20, 2015 7:27 AM, Marcus Bates <marcusbates@att.ne
t> wrote:
The prop on the Housai engine has a splined flange that can be unbolted fro
m the main hub.=C2- Find an old, unairworthy prop, remove flange and bolt
the flange to the stand.=C2- Kinda like an old A-65 Continental prop fla
nge.
Sent from my iPad
> On Aug 19, 2015, at 9:37 PM, Roger Kemp <f16viperdoc@me.com> wrote:
>
> This is what we used to teardown my YAK 50 engine. Mounted the stand to t
he prop flange.
> Doc
>
> <P9090447.JPG>
>
>
>
> Sent from my iPad
> <pre><b><font size=3D2 color="#000000" face=3D"courier new,courier"
>
>
>
> </b></font></pre>
S -
-
=C2- =C2- =C2- =C2- =C2- -Matt Dralle, List Admin.
Message 3
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| Subject: | Nanchang Air System |
14 years ago, I'd turn the main air off and come back a week later to
discover there was still 30+ atmospheres (or CMUs - Chinese Mystery
Units - or whatever) still in the plumbing south of the main shutoff
valve.
To maintain this happy state of affairs over time, I've overhauled the
gear actuators, replaced front and back seat gear and flap valves, and
routinely service check and shuttle valves.
That brings us to today. Shut off the main air. Go to lunch. Come back
in 45 minutes. Air in the plumbing - zero. WTF!
So:
1. Balloon tested gear actuators. No seeping.
2. All firewall check valves
overhauled within past month.
3. Pop off valve overhauled.
4. New snot valve.
5. Put a/c on jacks, put front gear and flap handles in neutral
position bleeding off down pressure on gear actuators and up pressure
on flap. Plumbing still bleeding off rapidly.
Granted, this is no big deal. The compressor brings the stored air up
quickly. It's me just being anal.
But before I go through all the check valves again, does anybody have
a bright idea?
Thanks,
Blitz Fox
415-307-2405
Message 4
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| Subject: | Re: Nanchang Air System |
It's all due to global warming. 14 years ago there was a lot less CO2 in
the air. Air is mostly nitrogen, and nitrogen is the largest molecule in
air, so it has a hard time leaking past seals. But now that we have so much
more smaller CO2 molecules in the air, it's now much more slippery than it
was 14 years ago, so it leaks past your seals that much more readily.
I installed aCO2 scrubber from a submarine just upstream of my air
compressor, in order to fatten up my air.
I also rebuilt my check valves, I found, that they were leaking slightly
past the lead washer.
Ernie
On Thursday, August 20, 2015, Byron Fox <byronmfox@gmail.com> wrote:
> <javascript:;>>
>
> 14 years ago, I'd turn the main air off and come back a week later to
> discover there was still 30+ atmospheres (or CMUs - Chinese Mystery
> Units - or whatever) still in the plumbing south of the main shutoff
> valve.
>
> To maintain this happy state of affairs over time, I've overhauled the
> gear actuators, replaced front and back seat gear and flap valves, and
> routinely service check and shuttle valves.
>
> That brings us to today. Shut off the main air. Go to lunch. Come back
> in 45 minutes. Air in the plumbing - zero. WTF!
>
> So:
>
> 1. Balloon tested gear actuators. No seeping.
>
> W2. All firewall check valves
> overhauled within past month.
>
> 3. Pop off valve overhauled.
> There
> 4. New snot valve.
>
> 5. Put a/c on jacks, put front gear and flap handles in neutral
> position bleeding off down pressure on gear actuators and up pressure
> on flap. Plumbing still bleeding off rapidly.
>
> Granted, this is no big deal. The compressor brings the stored air up
> quickly. It's me just being anal.
> But before I go through all the check valves again, does anybody have
> a bright idea?
>
> Thanks,
>
>
> Blitz Fox
> 415-307-2405
>
>
Message 5
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| Subject: | Re: Nanchang Air System |
I can and do appreciate the pursuit of perfection in all things that aviate, but
this seems like spending 3 hours to find a 2 cent error in your checking account.
I would look at the main air shutoff valve (Stainless?) and possibly the pressure
gauge.
Good luck!
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=446225#446225
Message 6
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| Subject: | "Airshow"over the Lake today - Yak.... |
Enjoyed it! Nice tight hammerheads and liked the rolls on the vertical up-line!
Smoke on next time. 3 turn spin was nicely done as well!
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=446226#446226
Message 7
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| Subject: | Re: Nanchang Air System |
Developing a crack in the aluminum lines. Where is the manic question. Leaking
around B nuts would be another. Don't forget your new check valves can go TU too.
I'm still chasing a leak in my 52. But, I have only replaced half of my check valves.
I'm getting to old for this! Bring back hydraulics! They freeking leak so you at
least get a clue of the general place in the airframe it is coming from! There
is enough dried soapy spray in my fuselage to wash the aircraft for a year.
Doc
Doc
Sent from my iPad
> On Aug 20, 2015, at 8:05 PM, Byron Fox <byronmfox@gmail.com> wrote:
>
>
> 14 years ago, I'd turn the main air off and come back a week later to
> discover there was still 30+ atmospheres (or CMUs - Chinese Mystery
> Units - or whatever) still in the plumbing south of the main shutoff
> valve.
>
> To maintain this happy state of affairs over time, I've overhauled the
> gear actuators, replaced front and back seat gear and flap valves, and
> routinely service check and shuttle valves.
>
> That brings us to today. Shut off the main air. Go to lunch. Come back
> in 45 minutes. Air in the plumbing - zero. WTF!
>
> So:
>
> 1. Balloon tested gear actuators. No seeping.
>
> 2. All firewall check valves
> overhauled within past month.
>
> 3. Pop off valve overhauled.
>
> 4. New snot valve.
>
> 5. Put a/c on jacks, put front gear and flap handles in neutral
> position bleeding off down pressure on gear actuators and up pressure
> on flap. Plumbing still bleeding off rapidly.
>
> Granted, this is no big deal. The compressor brings the stored air up
> quickly. It's me just being anal.
> But before I go through all the check valves again, does anybody have
> a bright idea?
>
> Thanks,
>
>
>
> Blitz Fox
> 415-307-2405
>
>
>
>
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