Today's Message Index:
----------------------
1. 05:09 AM - Re: CJ6 Maintenance question (Hans Oortman 1)
2. 05:57 AM - Re: CJ6 Maintenance question (cjpilot710@aol.com)
3. 07:52 AM - Re: CJ6 Maintenance question (Hans Oortman 1)
4. 10:29 AM - Re: CJ6 Maintenance question (Walter Lannon)
5. 10:15 PM - Magneto Parts (FamilyGage@aol.com)
Message 1
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| Subject: | CJ6 Maintenance question |
--> Yak-List message posted by: "Hans Oortman 1" <pa3arw@euronet.nl>
Dave,
It doesn't make any difference whether you put the plane on jacks. The
pressure in the struts remain the same, as in the tires.....Boyle's law....
Hans
-----Oorspronkelijk bericht-----
Van: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] Namens Dave Laird
Verzonden: zaterdag 23 september 2006 1:01
Aan: yak-list@matronics.com
Onderwerp: Re: Yak-List: CJ6 Maintenance question
--> Yak-List message posted by: Dave Laird <dave@davelaird.com>
I jack the leg up so the wheel is clear of the floor and set the tank
regulator the desired pressure and then inflate. I do this because
the first time I was inflating I messed up and deflated
the leg... the wing gets lower and lower.... Lucky for me I had made
sure nothing was UNDER the wing so it didn't touch anything and bend
any metal....
Although I have wondered if I should instead just set the jack to
just touching the jack point and not lift the wing at all because the
pressure in the strut might be slightly different with weight of the
plane on it.
comments?
Dave Laird
N63536 1983 CJ6A "Betty"
Dallas
Message 2
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| Subject: | Re: CJ6 Maintenance question |
In a message dated 9/23/2006 5:11:05 A.M. Pacific Standard Time,
pa3arw@euronet.nl writes:
Hans,
You are correct about Boyle's law, however - - -
To do a complete service of a gear strut, you need to jack up the airplane.
Release all the pressure from the strut.
Remove the valve assembly from the strut.
Make sure the fluid level in the strut is high enough to flow from the
opening with strut fully extended.
Reassemble the valve and pressurize the strut.
If you know that its just pressure that is down, you are correct, there is
no need to jack up the airplane.
To make life easier you can tap and replace those Chinese valves with
standard US valves. This makes serving away from home a whole lot easier.
Jim "Pappy" Goolsby
--> Yak-List message posted by: "Hans Oortman 1" <pa3arw@euronet.nl>
Dave,
It doesn't make any difference whether you put the plane on jacks. The
pressure in the struts remain the same, as in the tires.....Boyle's law....
Hans
-----Oorspronkelijk bericht-----
Van: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] Namens Dave Laird
Verzonden: zaterdag 23 september 2006 1:01
Aan: yak-list@matronics.com
Onderwerp: Re: Yak-List: CJ6 Maintenance question
--> Yak-List message posted by: Dave Laird <dave@davelaird.com>
I jack the leg up so the wheel is clear of the floor and set the tank
regulator the desired pressure and then inflate. I do this because
the first time I was inflating I messed up and deflated
the leg... the wing gets lower and lower.... Lucky for me I had made
sure nothing was UNDER the wing so it didn't touch anything and bend
any metal....
Although I have wondered if I should instead just set the jack to
just touching the jack point and not lift the wing at all because the
pressure in the strut might be slightly different with weight of the
plane on it.
comments?
Dave Laird
N63536 1983 CJ6A "Betty"
Dallas
Message 3
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| Subject: | CJ6 Maintenance question |
Jim,
The few times I have done the struts on my Yak52 we indeed have put her on
jacks, of course, it makes life a lot easier. I also made some tools to fit
to the valve because I couldn't get to original Russian tool. It works fine
and has a pressure meter on it as well. Normally we do this about once every
100hours. The oil makes it really messy though.
Fly safe!
Hans
_____
Van: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] Namens cjpilot710@aol.com
Verzonden: zaterdag 23 september 2006 14:57
Aan: yak-list@matronics.com
Onderwerp: Re: Yak-List: CJ6 Maintenance question
In a message dated 9/23/2006 5:11:05 A.M. Pacific Standard Time,
pa3arw@euronet.nl writes:
Hans,
You are correct about Boyle's law, however - - -
To do a complete service of a gear strut, you need to jack up the airplane.
Release all the pressure from the strut.
Remove the valve assembly from the strut.
Make sure the fluid level in the strut is high enough to flow from the
opening with strut fully extended.
Reassemble the valve and pressurize the strut.
If you know that its just pressure that is down, you are correct, there is
no need to jack up the airplane.
To make life easier you can tap and replace those Chinese valves with
standard US valves. This makes serving away from home a whole lot easier.
Jim "Pappy" Goolsby
--> Yak-List message posted by: "Hans Oortman 1" <pa3arw@euronet.nl>
Dave,
It doesn't make any difference whether you put the plane on jacks. The
pressure in the struts remain the same, as in the tires.....Boyle's law....
Hans
-----Oorspronkelijk bericht-----
Van: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] Namens Dave Laird
Verzonden: zaterdag 23 september 2006 1:01
Aan: yak-list@matronics.com
Onderwerp: Re: Yak-List: CJ6 Maintenance question
--> Yak-List message posted by: Dave Laird <dave@davelaird.com>
I jack the leg up so the wheel is clear of the floor and set the tank
regulator the desired pressure and then inflate. I do this because
the first time I was inflating I messed up and deflated
the leg... the wing gets lower and lower.... Lucky for me I had made
sure nothing was UNDER the wing so it didn't touch anything and bend
any metal....
Although I have wondered if I should instead just set the jack to
just touching the jack point and not lift the wing at all because the
pressure in the strut might be slightly different with weight of the
plane on it.
comments?
Dave Laird
N63536 1983 CJ6A es Day --> - NEW MATRONICS WEB FORUMS -
bsp; --> nbsp; - NEW MATRONICS LIST WIKI -
========================
Message 4
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| Subject: | Re: CJ6 Maintenance question |
Jim;
Very true. You should know if the fluid level in the oleo strut is
adequate before topping up the air pressure. However the method you
describe for checking it will overfill the strut to the point where it
will no longer function since it will be full of fluid
The Chinese manual gives a specific volume of fluid which is impossible
to check without fully draining and re-filling. The less accurate but
acceptable method of checking fluid level is much as you describe but
with the oleo's fully collapsed NOT extended. Fill to overflow with the
struts collapsed.
Cheers;
Walt
----- Original Message -----
From: cjpilot710@aol.com
To: yak-list@matronics.com
Sent: Saturday, September 23, 2006 5:56 AM
Subject: Re: Yak-List: CJ6 Maintenance question
In a message dated 9/23/2006 5:11:05 A.M. Pacific Standard Time,
pa3arw@euronet.nl writes:
Hans,
You are correct about Boyle's law, however - - -
To do a complete service of a gear strut, you need to jack up the
airplane.
Release all the pressure from the strut.
Remove the valve assembly from the strut.
Make sure the fluid level in the strut is high enough to flow from the
opening with strut fully extended.
Reassemble the valve and pressurize the strut.
If you know that its just pressure that is down, you are correct,
there is no need to jack up the airplane.
To make life easier you can tap and replace those Chinese valves with
standard US valves. This makes serving away from home a whole lot
easier.
Jim "Pappy" Goolsby
--> Yak-List message posted by: "Hans Oortman 1" <pa3arw@euronet.nl>
Dave,
It doesn't make any difference whether you put the plane on jacks.
The
pressure in the struts remain the same, as in the tires.....Boyle's
law....
Hans
-----Oorspronkelijk bericht-----
Van: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] Namens Dave Laird
Verzonden: zaterdag 23 september 2006 1:01
Aan: yak-list@matronics.com
Onderwerp: Re: Yak-List: CJ6 Maintenance question
--> Yak-List message posted by: Dave Laird <dave@davelaird.com>
I jack the leg up so the wheel is clear of the floor and set the
tank
regulator the desired pressure and then inflate. I do this because
the first time I was inflating I messed up and deflated
the leg... the wing gets lower and lower.... Lucky for me I had made
sure nothing was UNDER the wing so it didn't touch anything and bend
any metal....
Although I have wondered if I should instead just set the jack to
just touching the jack point and not lift the wing at all because
the
pressure in the strut might be slightly different with weight of the
plane on it.
comments?
Dave Laird
N63536 1983 CJ6A es Day --> - NEW MATRONICS WEB
FORUMS -
bsp; --> nbsp; - NEW MATRONICS LIST WIKI -
Message 5
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Gentlemen:
Dennis recently removed the factory ignition harness from my M-14P engine.
It runs great, but with over 500 hours, the magnetos will soon need attention.
Have been looking for points, rotors, and caps. So far have only found new
magnetos from GeSOCo at $1,200 each, but no parts.
If you know, or could direct me to a source, please contact me off list.
Look forward to seeing the RPA gang at Selma in October.
Thanks,
Ray Gage
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