---------------------------------------------------------- Yak-List Digest Archive --- Total Messages Posted Fri 05/13/16: 14 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 08:35 AM - Oily Prop (727gs) 2. 08:46 AM - Re: Oily Prop (John B) 3. 08:48 AM - Re: Oily Prop (Justin Drafts) 4. 10:03 AM - Re: Oily Prop (Walter Lannon) 5. 12:17 PM - Valve Guide Cylinder Question (HS6A) (Philip Nicholson) 6. 01:03 PM - Re: Valve Guide Cylinder Question (HS6A) (George S. Coy) 7. 03:27 PM - Nose and main gear pressures (Jon Blake) 8. 06:43 PM - Re: Oily Prop (727gs) 9. 08:33 PM - Re: Oily Prop (Roger Kemp) 10. 08:33 PM - Re: Oily Prop (Roger Kemp) 11. 08:38 PM - Re: Oily Prop (Roger Kemp) 12. 08:41 PM - Re: Valve Guide Cylinder Question (HS6A) (Roger Kemp) 13. 08:50 PM - Re: Valve Guide Cylinder Question (HS6A) (cjpilot710@aol.com) 14. 09:56 PM - Re: Valve Guide Cylinder Question (HS6A) (Walter Lannon) ________________________________ Message 1 _____________________________________ Time: 08:35:48 AM PST US Subject: Yak-List: Oily Prop From: "727gs" <727gs@att.net> My Stock CJ prop has been slinging a fine mist of oil from the blade seals, it appears. The local Dramader duster guy does his own props and has offered to help. Anyone have any advice? Are the seals available and easy? Anyone done this? Prop operates normally in flight. Thanks in advance, Steve near Chicago -------- Steve near Chicago Read this topic online here: http://forums.matronics.com/viewtopic.php?p=456190#456190 ________________________________ Message 2 _____________________________________ Time: 08:46:21 AM PST US From: John B Subject: Re: Yak-List: Oily Prop The MT propeller, from Germany, solves the oil-slinging problem. On Fri, May 13, 2016 at 8:35 AM, 727gs <727gs@att.net> wrote: > > My Stock CJ prop has been slinging a fine mist of oil from the blade > seals, it appears. The local Dramader duster guy does his own props and has > offered to help. Anyone have any advice? Are the seals available and easy? > Anyone done this? Prop operates normally in flight. > > Thanks in advance, > Steve near Chicago > > -------- > Steve near Chicago > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=456190#456190 > > ________________________________ Message 3 _____________________________________ Time: 08:48:56 AM PST US Subject: Re: Yak-List: Oily Prop From: Justin Drafts Good morning Steve - Yup, Doug Sapp offers a set of new prop hub seals at a good price. Altho I've not (yet) replaced a set, I'm told its not a difficult task to do. There's a special tool that's required as well. Justin On Fri, May 13, 2016 at 7:35 AM, 727gs <727gs@att.net> wrote: > > My Stock CJ prop has been slinging a fine mist of oil from the blade > seals, it appears. The local Dramader duster guy does his own props and has > offered to help. Anyone have any advice? Are the seals available and easy? > Anyone done this? Prop operates normally in flight. > > Thanks in advance, > Steve near Chicago > > -------- > Steve near Chicago > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=456190#456190 > > ________________________________ Message 4 _____________________________________ Time: 10:03:30 AM PST US From: "Walter Lannon" Subject: Re: Yak-List: Oily Prop Steve; Not necessarily from the "blade" seals. Take a very close look at where the oil is exiting at the blade root. If it is coming from the 3 slots in the blade grip it has nothing to do with the seals. In this case the oil is coming directly from the hub. If it is a new or freshly overhauled prop. you should expect to see oil here for a few hours. Under centrifugal loading oil will separate from the grease and exit at this location. That is reason #1 from the slots and is of no concern as it will dry up. Reason #2 (from the slots) is different. Oil is still coming directly from the hub but the source is engine oil leaking from the pitch change INNER seal (or a leaking transfer tube gasket) into the hub. Unlike OUTER seal leakage this will not initially be externally evident. If oil or grease leakage is evident around the blade grip rather than (or in addition to) the slots the Blade Bearing Grease seals are leaking. If in doubt remove the pitch change unit and check for oil in the hub. There should be none. Oil could also leak into the hub from a loose transfer tube or poor gasket. Walt -----Original Message----- From: 727gs Sent: Friday, May 13, 2016 8:35 AM Subject: Yak-List: Oily Prop My Stock CJ prop has been slinging a fine mist of oil from the blade seals, it appears. The local Dramader duster guy does his own props and has offered to help. Anyone have any advice? Are the seals available and easy? Anyone done this? Prop operates normally in flight. Thanks in advance, Steve near Chicago -------- Steve near Chicago Read this topic online here: http://forums.matronics.com/viewtopic.php?p=456190#456190 ________________________________ Message 5 _____________________________________ Time: 12:17:13 PM PST US Subject: Yak-List: Valve Guide Cylinder Question (HS6A) From: Philip Nicholson Good afternoon, on behalf of my AME (who has already made some enquiries to members on this list) I have a question: Number four cylinder was 50/80, exhaust valve leak suspected. When checking the cylinder, the exhaust valve guide was turning. He suggested he didn't think it was supposed to. Apparently he checked with George Coy and Walt Lannon (thanks) who both think that if a new cylinder is needed, then a M-14 cylinder will drop right in (apologies if I have this wrong). I cannot confirm this with Doug or Jill - both away. In short, why is the valve guide turning? can I replace the valve guide or do I have to replace the cylinder? If the cylinder, will an M-14 one do? Apparently, Doug had no HS6A ones available. The plane is in Canada so not keen on shipping cylinders back and forth across the border unless I have no choice. Input gratefully appreciated as my AME has stalled. Thanks, Phil Nicholson C-FEPN ________________________________ Message 6 _____________________________________ Time: 01:03:40 PM PST US From: "George S. Coy" Subject: RE: Yak-List: Valve Guide Cylinder Question (HS6A) The cylinders have the same basic dimensions, but are not the same. As I mentioned I have a few used cylinders here, but are very old. Perhaps someone on the list can provide a good cylinder for a Housai. George Coy From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Philip Nicholson Sent: Friday, May 13, 2016 3:16 PM Subject: Yak-List: Valve Guide Cylinder Question (HS6A) Good afternoon, on behalf of my AME (who has already made some enquiries to members on this list) I have a question: Number four cylinder was 50/80, exhaust valve leak suspected. When checking the cylinder, the exhaust valve guide was turning. He suggested he didn't think it was supposed to. Apparently he checked with George Coy and Walt Lannon (thanks) who both think that if a new cylinder is needed, then a M-14 cylinder will drop right in (apologies if I have this wrong). I cannot confirm this with Doug or Jill - both away. In short, why is the valve guide turning? can I replace the valve guide or do I have to replace the cylinder? If the cylinder, will an M-14 one do? Apparently, Doug had no HS6A ones available. The plane is in Canada so not keen on shipping cylinders back and forth across the border unless I have no choice. Input gratefully appreciated as my AME has stalled. Thanks, Phil Nicholson C-FEPN ________________________________ Message 7 _____________________________________ Time: 03:27:36 PM PST US Subject: Yak-List: Nose and main gear pressures From: Jon Blake RG9lcyBhbnlvbmUgcmVjYWxsIHRoZSBwcm9wZXIgcHJlc3N1cmUgdGhlIG1haW4gYW5kIG5vc2Ug c3RydXRzIHNob3VsZCBiZSBzZXJ2aWNlZCB0byBpbiBhIENKPyBKQgoKU2VudCBmcm9tIG15IFZl cml6b24gV2lyZWxlc3MgNEcgTFRFIERST0lE ________________________________ Message 8 _____________________________________ Time: 06:43:10 PM PST US Subject: Yak-List: Re: Oily Prop From: "727gs" <727gs@att.net> Thanks guys. I'll wipe it down and run it this weekend and pay more attention to where it's coming from. I appreciate the help and Walt, the exhaust fit fabulously. Steve -------- Steve near Chicago Read this topic online here: http://forums.matronics.com/viewtopic.php?p=456225#456225 ________________________________ Message 9 _____________________________________ Time: 08:33:03 PM PST US Subject: Re: Yak-List: Oily Prop From: Roger Kemp Call Doug Sapp. He should have them Doc Sent from my iPad > On May 13, 2016, at 10:35 AM, 727gs <727gs@att.net> wrote: > > > My Stock CJ prop has been slinging a fine mist of oil from the blade seals, it appears. The local Dramader duster guy does his own props and has offered to help. Anyone have any advice? Are the seals available and easy? Anyone done this? Prop operates normally in flight. > > Thanks in advance, > Steve near Chicago > > -------- > Steve near Chicago > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=456190#456190 > > > > > > > > > > ________________________________ Message 10 ____________________________________ Time: 08:33:38 PM PST US Subject: Re: Yak-List: Oily Prop From: Roger Kemp New seals are a hell of a lot cheaper. Doc Sent from my iPad > On May 13, 2016, at 10:45 AM, John B wrote: > > The MT propeller, from Germany, solves the oil-slinging problem. > > >> On Fri, May 13, 2016 at 8:35 AM, 727gs <727gs@att.net> wrote: >> >> My Stock CJ prop has been slinging a fine mist of oil from the blade seal s, it appears. The local Dramader duster guy does his own props and has offe red to help. Anyone have any advice? Are the seals available and easy? Anyon e done this? Prop operates normally in flight. >> >> Thanks in advance, >> Steve near Chicago >> >> -------- >> Steve near Chicago >> >> >> >> >> Read this topic online here: >> >> http://forums.matronics.com/viewtopic.php?p=456190#456190 >> >> >> >> >> >> >> >> ========== >> List" rel="noreferrer" target="_blank">http://www.matronics.com/Navig ator?Yak-List >> ========== >> FORUMS - >> eferrer" target="_blank">http://forums.matronics.com >> ========== >> WIKI - >> errer" target="_blank">http://wiki.matronics.com >> ========== >> b Site - >> -Matt Dralle, List Admin. >> rel="noreferrer" target="_blank">http://www.matronics.com/contributio n >> ========== >> >> >> > ________________________________ Message 11 ____________________________________ Time: 08:38:06 PM PST US Subject: Re: Yak-List: Oily Prop From: Roger Kemp Excellent Walt Doc Sent from my iPad > On May 13, 2016, at 12:02 PM, Walter Lannon wrote: > > > Steve; > > Not necessarily from the "blade" seals. > > Take a very close look at where the oil is exiting at the blade root. If it is coming from the 3 slots in the blade grip it has nothing to do with the seals. > In this case the oil is coming directly from the hub. If it is a new or freshly overhauled prop. you should expect to see oil here for a few hours. Under centrifugal loading oil will separate from the grease and exit at this location. That is reason #1 from the slots and is of no concern as it will dry up. > > Reason #2 (from the slots) is different. Oil is still coming directly from the hub but the source is engine oil leaking from the pitch change INNER seal (or a leaking transfer tube gasket) into the hub. Unlike OUTER seal leakage this will not initially be externally evident. > > If oil or grease leakage is evident around the blade grip rather than (or in addition to) the slots the Blade Bearing Grease seals are leaking. > > If in doubt remove the pitch change unit and check for oil in the hub. There should be none. Oil could also leak into the hub from a loose transfer tube or poor gasket. > > Walt > > > -----Original Message----- From: 727gs > Sent: Friday, May 13, 2016 8:35 AM > To: yak-list@matronics.com > Subject: Yak-List: Oily Prop > > > My Stock CJ prop has been slinging a fine mist of oil from the blade seals, it appears. The local Dramader duster guy does his own props and has offered to help. Anyone have any advice? Are the seals available and easy? Anyone done this? Prop operates normally in flight. > > Thanks in advance, > Steve near Chicago > > -------- > Steve near Chicago > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=456190#456190 > > > > > > > > > > > > > ________________________________ Message 12 ____________________________________ Time: 08:41:21 PM PST US Subject: Re: Yak-List: Valve Guide Cylinder Question (HS6A) From: Roger Kemp Agree with George. They are not interchangeable. Doc Sent from my iPad > On May 13, 2016, at 3:02 PM, George S. Coy wrote: > > The cylinders have the same basic dimensions, but are not the same. As I m entioned I have a few used cylinders here, but are very old. Perhaps someone on the list can provide a good cylinder for a Housai. > George Coy > > From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@ma tronics.com] On Behalf Of Philip Nicholson > Sent: Friday, May 13, 2016 3:16 PM > To: Yak-List; Colin McGeachy > Subject: Yak-List: Valve Guide Cylinder Question (HS6A) > > Good afternoon, > on behalf of my AME (who has already made some enquiries to members on thi s list) I have a question: > > Number four cylinder was 50/80, exhaust valve leak suspected. When checkin g the cylinder, the exhaust valve guide was turning. He suggested he didn't think it was supposed to. Apparently he checked with George Coy and Walt La nnon (thanks) who both think that if a new cylinder is needed, then a M-14 c ylinder will drop right in (apologies if I have this wrong). I cannot confir m this with Doug or Jill - both away. > > In short, why is the valve guide turning? can I replace the valve guide or do I have to replace the cylinder? If the cylinder, will an M-14 one do? A pparently, Doug had no HS6A ones available. The plane is in Canada so not k een on shipping cylinders back and forth across the border unless I have no c hoice. > > Input gratefully appreciated as my AME has stalled. > > Thanks, > Phil Nicholson > C-FEPN > ________________________________ Message 13 ____________________________________ Time: 08:50:58 PM PST US From: cjpilot710@aol.com Subject: Re: Yak-List: Valve Guide Cylinder Question (HS6A) Give Allen Barrett at Barrett Precision Engines a call. He may made be able to fix that cylinder for you. His number is 918-835-1089 and you can see the web site at _www.bpaengines.com_ (http://www.bpaengines.com) . He may be able to machine a valve guide. Very down to earth guy and really knows engines. Jim "Pappy" Goolsby In a message dated 5/13/2016 3:17:36 P.M. Eastern Daylight Time, pednicholson@gmail.com writes: Good afternoon, on behalf of my AME (who has already made some enquiries to members on this list) I have a question: Number four cylinder was 50/80, exhaust valve leak suspected. When checking the cylinder, the exhaust valve guide was turning. He suggested he didn't think it was supposed to. Apparently he checked with George Coy and Walt Lannon (thanks) who both think that if a new cylinder is needed, then a M-14 cylinder will drop right in (apologies if I have this wrong). I cannot confirm this with Doug or Jill - both away. In short, why is the valve guide turning? can I replace the valve guide or do I have to replace the cylinder? If the cylinder, will an M-14 one do? Apparently, Doug had no HS6A ones available. The plane is in Canada so not keen on shipping cylinders back and forth across the border unless I have no choice. Input gratefully appreciated as my AME has stalled. Thanks, Phil Nicholson C-FEPN ________________________________ Message 14 ____________________________________ Time: 09:56:59 PM PST US From: "Walter Lannon" Subject: Re: Yak-List: Valve Guide Cylinder Question (HS6A) Phillip; You definitely have this wrong. I did not suggest that an M14 cylinder would be an acceptable alternate. I simply suggested that Jill, or George Coy, may have access to a spare Huosai cylinder. Walt From: Philip Nicholson Sent: Friday, May 13, 2016 12:16 PM Subject: Yak-List: Valve Guide Cylinder Question (HS6A) Good afternoon, on behalf of my AME (who has already made some enquiries to members on this list) I have a question: Number four cylinder was 50/80, exhaust valve leak suspected. When checking the cylinder, the exhaust valve guide was turning. He suggested he didn't think it was supposed to. Apparently he checked with George Coy and Walt Lannon (thanks) who both think that if a new cylinder is needed, then a M-14 cylinder will drop right in (apologies if I have this wrong). I cannot confirm this with Doug or Jill - both away. In short, why is the valve guide turning? can I replace the valve guide or do I have to replace the cylinder? If the cylinder, will an M-14 one do? Apparently, Doug had no HS6A ones available. The plane is in Canada so not keen on shipping cylinders back and forth across the border unless I have no choice. Input gratefully appreciated as my AME has stalled. Thanks, Phil Nicholson C-FEPN ------------------------------------------------------------------------------------- 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.