---------------------------------------------------------- Yak-List Digest Archive --- Total Messages Posted Sat 09/23/06: 5 ---------------------------------------------------------- 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 _____________________________________ Time: 05:09:43 AM PST US From: "Hans Oortman 1" Subject: RE: Yak-List: CJ6 Maintenance question --> Yak-List message posted by: "Hans Oortman 1" 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 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 _____________________________________ Time: 05:57:35 AM PST US From: cjpilot710@aol.com 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" 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 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 _____________________________________ Time: 07:52:57 AM PST US From: "Hans Oortman 1" Subject: RE: Yak-List: 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" 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 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 _____________________________________ Time: 10:29:10 AM PST US From: "Walter Lannon" Subject: Re: Yak-List: 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" 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 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 _____________________________________ Time: 10:15:26 PM PST US From: FamilyGage@aol.com Subject: Yak-List: Magneto Parts 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