Today's Message Index:
----------------------
1. 08:37 PM - Tailwheel adapter update 2 (Wesley Warner)
2. 10:41 PM - Nanchang Cylinder Base Gaskets (Jay McIntyre)
3. 11:20 PM - Re: Nanchang Cylinder Base Gaskets (Frank Stelwagon)
Message 1
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| Subject: | Tailwheel adapter update 2 |
Guys,
I've been talking to the guy on the phone as my trip was postponed.
I took what he had file wise and updated it. Attached is a 3D pdf of
what the adapter looks like. Just click on the image after the pdf
loads and you can rotate it around, etc... I'm now traveling this
weekend and should be able to meet with him and drop off the original
prototype. I'll let you guys know more, when I do.
Wes
Message 2
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| Subject: | Nanchang Cylinder Base Gaskets |
Hi all.
Just had a newly overhauled Housai loosen the #4 cylinder base nuts after
2.1 hours.
Upon removing the cylinder we found the rear 2 sets of studs had no tab
washers or other form of locking on them.
We also found that all 8 other cylinders have a base gasket of very soft
metal construction - #4 had the normal paper gasket.
Can anyone tell me what these gaskets would be made of as we have not
disturbed any of them.
Also... what are peoples views on running without the gaskets and just the
O-ring (like most other engines). I am sure the Chinese put the gasket there
for some reason. Anything to do with the shot peening on the mating face of
the crankcase????
regards, Jay
New Zealand.
P.S this is the same aircraft that I had the voltage regulator/generator
problem with. It was cured by finding a serviceable voltage regulator....
Interestingly the other aircraft we were playing with had the solid state
regulation system with the big heat sink in place of the regulator. The
wiring was reversed on it and we cured our induced problem by flashing the
generator in the opposite way to which the wiring diagram indicated!
Message 3
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| Subject: | Re: Nanchang Cylinder Base Gaskets |
Use the O-ring and a thin coating of Hylomar (sp) with no gasket. The
Hylomar can be hard to find, it is a Permatex brand. Use he lock tabs.
Frank
N23021
----- Original Message -----
From: Jay McIntyre
To: yak list
Sent: Wednesday, April 15, 2009 10:40 PM
Subject: Yak-List: Nanchang Cylinder Base Gaskets
Hi all.
Just had a newly overhauled Housai loosen the #4 cylinder base nuts
after 2.1 hours.
Upon removing the cylinder we found the rear 2 sets of studs had no
tab washers or other form of locking on them.
We also found that all 8 other cylinders have a base gasket of very
soft metal construction - #4 had the normal paper gasket.
Can anyone tell me what these gaskets would be made of as we have not
disturbed any of them.
Also... what are peoples views on running without the gaskets and just
the O-ring (like most other engines). I am sure the Chinese put the
gasket there for some reason. Anything to do with the shot peening on
the mating face of the crankcase????
regards, Jay
New Zealand.
P.S this is the same aircraft that I had the voltage
regulator/generator problem with. It was cured by finding a serviceable
voltage regulator....
Interestingly the other aircraft we were playing with had the solid
state regulation system with the big heat sink in place of the
regulator. The wiring was reversed on it and we cured our induced
problem by flashing the generator in the opposite way to which the
wiring diagram indicated!
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