---------------------------------------------------------- Yak-List Digest Archive --- Total Messages Posted Wed 10/02/13: 11 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:50 AM - Re: Re: Hydrostatic tests (kevin pilling) 2. 04:54 AM - Re: prop blade needed (cjpilot710@aol.com) 3. 06:41 AM - Re: Hydrostatic tests (keithmckinley) 4. 06:44 AM - Re: Cloth stick boots (keithmckinley) 5. 08:56 AM - Re: Re: Hydrostatic tests (doug sapp) 6. 01:49 PM - CJ prop - intergranular corrosion (keithmckinley) 7. 03:15 PM - Re: Re: Hydrostatic tests (KingCJ6@aol.com) 8. 06:29 PM - Re: Hydrostatic tests (Vic) 9. 07:06 PM - Re: CJ prop - intergranular corrosion (cjpilot710@aol.com) 10. 07:59 PM - Re: Re: Hydrostatic tests (Roger Kemp M.D.) 11. 08:03 PM - Re: CJ prop - intergranular corrosion (keithmckinley) ________________________________ Message 1 _____________________________________ Time: 12:50:03 AM PST US From: "kevin pilling" Subject: RE: Yak-List: Re: Hydrostatic tests I was always taught "Best Practice" is never to reuse copper sealing washers, replace with a new one every time. At the very least a used one should be annealed before reuse. Kp -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of keithmckinley Sent: 01 October 2013 15:35 Subject: Yak-List: Re: Hydrostatic tests What about cleaning the bottles when they are out or the aircraft? Just out of curiosity what does R&Ring the drain plug on a daily basis do to the copper washer? -------- Keith McKinley 700HS X26 Sebastian, FL Read this topic online here: http://forums.matronics.com/viewtopic.php?p=409565#409565 ________________________________ Message 2 _____________________________________ Time: 04:54:28 AM PST US From: cjpilot710@aol.com Subject: Re: Yak-List: prop blade needed Where are you located? Pappy In a message dated 10/2/2013 12:49:23 A.M. Eastern Daylight Time, KingCJ6@aol.com writes: Jim - we have one, but it may need to be crated for shipping. Dave King In a message dated 10/1/2013 8:22:09 P.M. Pacific Daylight Time, cjpilot710@aol.com writes: Guys, I=99m looking for a prop (one blade) that I plan on using as a door stop. The wind keeps blowing my hangar door shut and I=99ve got this idea for a neat door stop. Condition or paint does not matter, or even if it=99s d amaged or corroded and totally un-air worthy. But if its taking up space in your hangar, I=99ll pay you $30.00 and shipping. I=99m thinking the re may be a couple of Chinese props laying around out there. Off list I guess. Jim "Pappy" Goolsby ="http://www.matronics.com/Navigator?Yak-List">http://www.matronics.com/N avigator?Yak-List s.matronics.com/">http://forums.matronics.com p://www.matronics.com/contribution">http://www.matronics.com/contribution ________________________________ Message 3 _____________________________________ Time: 06:41:15 AM PST US Subject: Yak-List: Re: Hydrostatic tests From: "keithmckinley" agreed! -------- Keith McKinley 700HS X26 Sebastian, FL Read this topic online here: http://forums.matronics.com/viewtopic.php?p=409666#409666 ________________________________ Message 4 _____________________________________ Time: 06:44:39 AM PST US Subject: Yak-List: Re: Cloth stick boots From: "keithmckinley" I'm assuming those boots are to replace the 4, sticks, flaps, nose strut. I picture of one installed would be great. Nice work! -------- Keith McKinley 700HS X26 Sebastian, FL Read this topic online here: http://forums.matronics.com/viewtopic.php?p=409667#409667 ________________________________ Message 5 _____________________________________ Time: 08:56:57 AM PST US Subject: Re: Yak-List: Re: Hydrostatic tests From: doug sapp Copper crush washers and new plugs for the air tanks are in stock if you need them. And no, they should not be reused. However a word of warning do not try to remove the plug with anything less than a tight fitting box end or socket. A open end or your good old "adjustable metric spanner" will lop off the the hex corners, then your only option will be to weld a piece of bar stock to the plug in order to remove it. Doug On Wed, Oct 2, 2013 at 12:44 AM, kevin pilling wrote: > > I was always taught "Best Practice" is never to reuse copper sealing > washers, replace with a new one every time. At the very least a used one > should be annealed before reuse. > > Kp > > > -----Original Message----- > From: owner-yak-list-server@matronics.com > [mailto:owner-yak-list-server@matronics.com] On Behalf Of keithmckinley > Sent: 01 October 2013 15:35 > To: yak-list@matronics.com > Subject: Yak-List: Re: Hydrostatic tests > > > What about cleaning the bottles when they are out or the aircraft? Just out > of curiosity what does R&Ring the drain plug on a daily basis do to the > copper washer? > > -------- > Keith McKinley > 700HS > X26 Sebastian, FL > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=409565#409565 > > ________________________________ Message 6 _____________________________________ Time: 01:49:08 PM PST US Subject: Yak-List: CJ prop - intergranular corrosion From: "keithmckinley" I felt this spot on my prop and thought it was a ding. It was tough to really see it before I removed the paint. The pictures make it look deeper than it is and of course I don't know how far the "worm" goes. I'm sure it's been flying this way for a little while. My gut feeling is to get two brand new blades from Doug. I'd love to hear anyone's 2 cents worth. (I apologize for the dimensions of the attachments) -------- Keith McKinley 700HS X26 Sebastian, FL Read this topic online here: http://forums.matronics.com/viewtopic.php?p=409712#409712 Attachments: http://forums.matronics.com//files/img_1061_727.jpg http://forums.matronics.com//files/img_1059_904.jpg http://forums.matronics.com//files/img_1054_306.jpg ________________________________ Message 7 _____________________________________ Time: 03:15:29 PM PST US From: KingCJ6@aol.com Subject: Re: Yak-List: Re: Hydrostatic tests A number of years ago, after a hydrostatic test, we installed a new copper crush washer as tight as possible with a 12=9D socket. A week later we started experiencing an air leak that took a few weeks to trace. Eventual ly an ultrasonic leak detector pointed us to the main tank drain. A further 1/16 rotation on the plug, using an 18=9D =9Cbreaker bar=9D p ipe, stopped the leak instantly. As Doug suggests, given the torque often needed to secure this plug, invest in a good 6 point (not 12) socket or wrench as you will likely roun d the corners without one. Dave In a message dated 10/2/2013 12:01:15 P.M. Pacific Daylight Time, dougsappllc@gmail.com writes: Copper crush washers and new plugs for the air tanks are in stock if you need them. And no, they should not be reused. However a word of warning do not try to remove the plug with anything less than a tight fitting box end or socket. A open end or your good old "adjustable metric spanner" will lop off the the hex corners, then your only option will be to weld a piece of bar stock to the plug in order to remove it. Doug On Wed, Oct 2, 2013 at 12:44 AM, kevin pilling <_pilko2@btinternet.com_ (mailto:pilko2@btinternet.com) > wrote: (mailto:pilko2@btinternet.com) > I was always taught "Best Practice" is never to reuse copper sealing washers, replace with a new one every time. At the very least a used one should be annealed before reuse. Kp -----Original Message----- From: _owner-yak-list-server@matronics.com_ (mailto:owner-yak-list-server@matronics.com) [mailto:_owner-yak-list-server@matronics.com_ (mailto:owner-yak-list-server@matronics.com) ] On Behalf Of keithmckinley Sent: 01 October 2013 15:35 Subject: Yak-List: Re: Hydrostatic tests (mailto:cetopfed@gmail.com) > What about cleaning the bottles when they are out or the aircraft? Just ou t of curiosity what does R&Ring the drain plug on a daily basis do to the copper washer? -------- Keith McKinley 700HS X26 Sebastian, FL Read this topic online here: http://forums.matronics.com/viewtopic.php?p=409565#409565 rget="_blank">http://www.matronics.com/Navigator?Yak-List http://forums.matronics.com le, List Admin. ="_blank">http://www.matronics.com/contribution ________________________________ Message 8 _____________________________________ Time: 06:29:21 PM PST US Subject: Yak-List: Re: Hydrostatic tests From: "Vic" Hi, instead of copper crush washers Id rather go for an O-ring design in this place. You would not have to apply that high torque to get a decent seal and could reuse the o-ring a few times. We are running an 18 T for 7 years now and never ever had water in the bottles since. But certainly we drain the system at the fire wall in the very first minute after engine shut-down -- everytime. Nevertheless I use clear motorbike chain grease for rust protection in the bottles and they still look new inside checked by endoscope. Cheers Vic Read this topic online here: http://forums.matronics.com/viewtopic.php?p=409730#409730 ________________________________ Message 9 _____________________________________ Time: 07:06:50 PM PST US From: cjpilot710@aol.com Subject: Re: Yak-List: CJ prop - intergranular corrosion Years ago one of CJ guys found a prop where the Chinese found corrosion had filled with bond-do and repainted. I and Jeff Linebaugh found both his props with large integranduar corrosion at the blades mid point. He got a new set (still in factory box) of blades and found the tips badly corroded! If money is a concern but still want to be safe, I'd send the props to a good prop shop. Have them strip and x-ray the blades. Let them determined if the blade is repairable i.e. file it smooth and re balance both blades. That far out on the tip, the blades performance will not suffer as there is a lot lost out there anyway. This type of corrosion is from the quenching process when the blade come out the furnace. I've seen blades with larger damage than that repaired in the field with the blessing of the manufacture. A good prop shop can use the same rules of like props to determine what to do about yours. Jim "Pappy" Goolsby In a message dated 10/2/2013 8:37:47 P.M. Eastern Daylight Time, cetopfed@gmail.com writes: --> Yak-List message posted by: "keithmckinley" I felt this spot on my prop and thought it was a ding. It was tough to really see it before I removed the paint. The pictures make it look deeper than it is and of course I don't know how far the "worm" goes. I'm sure it's been flying this way for a little while. My gut feeling is to get two brand new blades from Doug. I'd love to hear anyone's 2 cents worth. (I apologize for the dimensions of the attachments) -------- Keith McKinley 700HS X26 Sebastian, FL Read this topic online here: http://forums.matronics.com/viewtopic.php?p=409712#409712 Attachments: http://forums.matronics.com//files/img_1061_727.jpg http://forums.matronics.com//files/img_1059_904.jpg http://forums.matronics.com//files/img_1054_306.jpg ________________________________ Message 10 ____________________________________ Time: 07:59:20 PM PST US Subject: Re: Yak-List: Re: Hydrostatic tests From: "Roger Kemp M.D." So out of curiosity how are getting the clear grease distributed through out the interior of the tank? Doc Sent from my iPad On Oct 2, 2013, at 8:27 PM, "Vic" wrote: > > Hi, > > instead of copper crush washers Id rather go for an O-ring design in this place. You would not have to apply that high torque to get a decent seal and could reuse the o-ring a few times. We are running an 18 T for 7 years now and never ever had water in the bottles since. But certainly we drain the system at the fire wall in the very first minute after engine shut-down -- everytime. Nevertheless I use clear motorbike chain grease for rust protection in the bottles and they still look new inside checked by endoscope. > > Cheers > Vic > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=409730#409730 > > > > > > > > > > ________________________________ Message 11 ____________________________________ Time: 08:03:44 PM PST US Subject: Yak-List: Re: CJ prop - intergranular corrosion From: "keithmckinley" Great post Pappy! Very interesting. Are there any shops you might recommend down here in FL, or wherever... Thx Keith -------- Keith McKinley 700HS X26 Sebastian, FL Read this topic online here: http://forums.matronics.com/viewtopic.php?p=409742#409742 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message yak-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Yak-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/yak-list Browse Digests http://www.matronics.com/digest/yak-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.