---------------------------------------------------------- Yak-List Digest Archive --- Total Messages Posted Wed 08/29/18: 8 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:03 AM - Re: Brackett Air Filter (Roger Kemp) 2. 02:13 PM - Yak Air Valves (Rico Jaeger) 3. 02:32 PM - Re: Yak Air Valves (Hank Gibson) 4. 02:43 PM - Re: Yak Air Valves (Jon Boede) 5. 03:18 PM - Re: Yak Air Valves (LawnDart) 6. 05:10 PM - Re: Yak Air Valves (Vic) 7. 07:31 PM - Re: Yak Air Valves (Roger Kemp) 8. 10:28 PM - Intake tubage (Jon Boede) ________________________________ Message 1 _____________________________________ Time: 07:03:54 AM PST US From: Roger Kemp Subject: Re: Yak-List: Brackett Air Filter Okay, have to plead ignorance. Have not even seen this on a YAK. How does it attach to the screen? Doc Sent from my iPad > On Aug 28, 2018, at 5:43 PM, Mark Pennington wrote: > > I don=99t think the 50 hour cycle is over kill. > Got my M14 powered CJ two years ago. > > The bracket filter on the plane was adhered to the wire frame under and ha d to be soaked off with AV gas. > > I also change mine every 50 hours. > > Mark > > > >> On Tue, Aug 28, 2018 at 1:08 PM Warren Hill wrote: >> I=99ve used the Brackett filter on the M-14P of my CJ for years. No significant loss of power noted. Might be over-doing this, but I change it e very 50 hours. >> >> Here's an image of the packaging. As mentioned, this is not listed in the ir regular catalog. >> >> Warren Hill >> N464TW >> Mesa, AZ >> >> >> >> >> >>> On Aug 28, 2018, at 2:54 AM, Craig Payne wrote: >>> >>> These air filters are simple but do a great job of keeping silica out of the engine. "Dirt" causes rapid wear in any engine. Off-road racers for exa mple, depend on them. >>> >>> I can't say I ever saw a measurable difference in Manifold Pressure by a dding a filter but I'm sure there is some loss. For the air racing that I di d with the CJ, I replaced the whole unit with a ram air duct. I did design a retro-fit kit for a K&N style filter but it offered no advantage in perform ance or price. >>> >>> Order directly from Brackett, I think it is a B-197, you won't find it l isted. I have operated from short, turf fields and the best fix for that is a n M-14P. Suck it up, Go Big or Stay Home. >>> >>> BTW, Allen Baker of Gulfport, MS is the new, proud owner of N285CJ, he j ust got it home on Sunday after several days of sweating out Florida heat tr aining with Pappy. Pappy hung in there but did look like one tired old dog o n summer afternoons =F0=9F=98=82 >>> >>> Craig Payne >> ________________________________ Message 2 _____________________________________ Time: 02:13:25 PM PST US From: Rico Jaeger Subject: Yak-List: Yak Air Valves Greetings, Aviators and Aviatrixes! As I continue my (endless) pursuits in identifying and rectifying my emerge ncy air leak, about the only items remaining untouched are the master air v alves. After liberating the front valve, I managed to open it up - despite it's best impressive efforts to remain intact. The only fix I can envision is lapping / re-seating the needle valve. My question is: Is it common for these to lose their sealing ability? It would seem to reason that they are used so little, (and built so robustly) that they shouldn't EVER wear out. Or is it because they're rarely used that they begin to loosen up? Am I mis sing part of the picture here? I don't see any seals or anything else that may be the issue...but despite no audible leak, emergency air is totally de pleted within several hours. I replaced the bottle and sealed it TIGHTLY. T he check-valve between the external fill point and the bottle checks out. M ain air integrity is flawless. Any ideas / guidance would be mucho appreciato! Many thanx! Rico Jaeger 915 S. 11th Ave. Wausau, WI. 54401 715.529.7426 // 1969 Cessna 150J ^/---//-X N61333 // Hangar #35 / AUW // 1992 Yakovlev Yak 52 ^/---//-X N21YK // Hangar #21 / AUW ________________________________ Message 3 _____________________________________ Time: 02:32:14 PM PST US From: Hank Gibson Subject: Re: Yak-List: Yak Air Valves Rico- suggest you remove old Emer and Main valves with new SS valves from S wagelok. Procedure attached. Hoot Sent from my iPhone > On Aug 29, 2018, at 5:01 PM, Rico Jaeger wrote: > > Greetings, Aviators and Aviatrixes! > > As I continue my (endless) pursuits in identifying and rectifying my emerg ency air leak, about the only items remaining untouched are the master air v alves. After liberating the front valve, I managed to open it up - despite i t's best impressive efforts to remain intact. The only fix I can envision is lapping / re-seating the needle valve. My question is: Is it common for the se to lose their sealing ability? It would seem to reason that they are used so little, (and built so robustly) that they shouldn't EVER wear out. Or is it because they're rarely used that they begin to loosen up? Am I missing p art of the picture here? I don't see any seals or anything else that may be t he issue...but despite no audible leak, emergency air is totally depleted wi thin several hours. I replaced the bottle and sealed it TIGHTLY. The check-v alve between the external fill point and the bottle checks out. Main air int egrity is flawless. > > Any ideas / guidance would be mucho appreciato! > > Many thanx! > > Rico Jaeger > 915 S. 11th Ave. > Wausau, WI. 54401 > 715.529.7426 > // > 1969 Cessna 150J ^/---//-X > N61333 // > Hangar #35 / AUW > // > 1992 Yakovlev Yak 52 ^/---//-X > N21YK // > Hangar #21 / AUW > > ________________________________ Message 4 _____________________________________ Time: 02:43:02 PM PST US From: Jon Boede Subject: Re: Yak-List: Yak Air Valves RnJlcXVlbnRseSBnZXQgaW50ZXItZ3JhbnVsYXIgY29ycm9zaW9uIGluIHRoZSB2YWx2ZSBuZWVk bGVzIGFuZCB0aGV5IGZhaWwgc2xvd2x5IG92ZXIgdGltZS4NCg0KVGhlIHN0ZWVsIHRoZXkgdXNl ZCBmb3IgdGhlIG5lZWRsZXMgd2FzbuKAmXQgYWx3YXlzIHRoZSBiZXN0IHF1YWxpdHkuDQoNCk9u IEF1ZyAyOSwgMjAxOCwgYXQgNDoyNiBQTSwgUmljbyBKYWVnZXIgPHJvY2tucGlsb3RAaG90bWFp bC5jb208bWFpbHRvOnJvY2tucGlsb3RAaG90bWFpbC5jb20+PiB3cm90ZToNCg0KDQpHcmVldGlu Z3MsIEF2aWF0b3JzIGFuZCBBdmlhdHJpeGVzIQ0KDQoNCkFzIEkgY29udGludWUgbXkgKGVuZGxl c3MpIHB1cnN1aXRzIGluIGlkZW50aWZ5aW5nIGFuZCByZWN0aWZ5aW5nIG15IGVtZXJnZW5jeSBh aXIgbGVhaywgYWJvdXQgdGhlIG9ubHkgaXRlbXMgcmVtYWluaW5nIHVudG91Y2hlZCBhcmUgdGhl IG1hc3RlciBhaXIgdmFsdmVzLiBBZnRlciBsaWJlcmF0aW5nIHRoZSBmcm9udCB2YWx2ZSwgSSBt YW5hZ2VkIHRvIG9wZW4gaXQgdXAgLSBkZXNwaXRlIGl0J3MgYmVzdCBpbXByZXNzaXZlIGVmZm9y dHMgdG8gcmVtYWluIGludGFjdC4gVGhlIG9ubHkgZml4IEkgY2FuIGVudmlzaW9uIGlzIGxhcHBp bmcgLyByZS1zZWF0aW5nIHRoZSBuZWVkbGUgdmFsdmUuIE15IHF1ZXN0aW9uIGlzOiBJcyBpdCBj b21tb24gZm9yIHRoZXNlIHRvIGxvc2UgdGhlaXIgc2VhbGluZyBhYmlsaXR5PyBJdCB3b3VsZCBz ZWVtIHRvIHJlYXNvbiB0aGF0IHRoZXkgYXJlIHVzZWQgc28gbGl0dGxlLCAoYW5kIGJ1aWx0IHNv IHJvYnVzdGx5KSB0aGF0IHRoZXkgc2hvdWxkbid0IEVWRVIgd2VhciBvdXQuIE9yIGlzIGl0IGJl Y2F1c2UgdGhleSdyZSByYXJlbHkgdXNlZCB0aGF0IHRoZXkgYmVnaW4gdG8gbG9vc2VuIHVwPyBB bSBJIG1pc3NpbmcgcGFydCBvZiB0aGUgcGljdHVyZSBoZXJlPyBJIGRvbid0IHNlZSBhbnkgc2Vh bHMgb3IgYW55dGhpbmcgZWxzZSB0aGF0IG1heSBiZSB0aGUgaXNzdWUuLi5idXQgZGVzcGl0ZSBu byBhdWRpYmxlIGxlYWssIGVtZXJnZW5jeSBhaXIgaXMgdG90YWxseSBkZXBsZXRlZCB3aXRoaW4g c2V2ZXJhbCBob3Vycy4gSSByZXBsYWNlZCB0aGUgYm90dGxlIGFuZCBzZWFsZWQgaXQgVElHSFRM WS4gVGhlIGNoZWNrLXZhbHZlIGJldHdlZW4gdGhlIGV4dGVybmFsIGZpbGwgcG9pbnQgYW5kIHRo ZSBib3R0bGUgY2hlY2tzIG91dC4gTWFpbiBhaXIgaW50ZWdyaXR5IGlzIGZsYXdsZXNzLg0KDQoN CkFueSBpZGVhcyAvIGd1aWRhbmNlIHdvdWxkIGJlIG11Y2hvIGFwcHJlY2lhdG8hDQoNCg0KTWFu eSB0aGFueCENCg0KDQpSaWNvIEphZWdlcg0KOTE1IFMuIDExdGggQXZlLg0KV2F1c2F1LCBXSS4g NTQ0MDENCjcxNS41MjkuNzQyNg0KICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAvLw0KMTk2OSBDZXNzbmEgMTUwSiAgICAg ICAgICAgICAgICAgICAgICAgICAgICBeLy0tLS8vLVgNCk42MTMzMyAgICAgICAgICAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgLy8NCkhhbmdhciAjMzUgLyBBVVcNCiAg ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgLy8NCjE5OTIg WWFrb3ZsZXYgWWFrIDUyICAgIF4vLS0tLy8tWA0KTjIxWUsgICAgICAgICAgICAgICAgICAgICAg ICAgICAgICAgICAgIC8vDQpIYW5nYXIgIzIxIC8gQVVXDQoNCg0K ________________________________ Message 5 _____________________________________ Time: 03:18:03 PM PST US Subject: Yak-List: Re: Yak Air Valves From: "LawnDart" In almost 20 years, the only leaks I have had on the emergency side were at the emergency valves in the cockpits. There is a square o-ring, #6 in the attachment; this has always been the offender. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=482782#482782 Attachments: http://forums.matronics.com//files/e_valve_186.jpg ________________________________ Message 6 _____________________________________ Time: 05:10:12 PM PST US Subject: Yak-List: Re: Yak Air Valves From: "Vic" Hi Rico, how did you check for leaks, with soapy water foam ? Did you check the hose to the pressure indicator plus this instrument itself ? We had same problem on the 18 T but in fact it was the hose, decades old and never replaced. Since we do not loose ANY pressure for half a year. Main air is OK in the tank when valve is closed but air in the tubes drops in a few hours. No need for square o-rings anywhere but standard o-rings with big enough cross sections do it - BUT all faces must be smooth, no scratches or rust there so the o-ring has a chance to seal on them. Vic Read this topic online here: http://forums.matronics.com/viewtopic.php?p=482784#482784 ________________________________ Message 7 _____________________________________ Time: 07:31:19 PM PST US From: Roger Kemp Subject: Re: Yak-List: Yak Air Valves Rico, The Bobbin in the ER shut off valve will rust allowing it to leak. Doc Sent from my iPad > On Aug 29, 2018, at 4:01 PM, Rico Jaeger wrote: > > Greetings, Aviators and Aviatrixes! > > As I continue my (endless) pursuits in identifying and rectifying my emerg ency air leak, about the only items remaining untouched are the master air v alves. After liberating the front valve, I managed to open it up - despite i t's best impressive efforts to remain intact. The only fix I can envision is lapping / re-seating the needle valve. My question is: Is it common for the se to lose their sealing ability? It would seem to reason that they are used so little, (and built so robustly) that they shouldn't EVER wear out. Or is it because they're rarely used that they begin to loosen up? Am I missing p art of the picture here? I don't see any seals or anything else that may be t he issue...but despite no audible leak, emergency air is totally depleted wi thin several hours. I replaced the bottle and sealed it TIGHTLY. The check-v alve between the external fill point and the bottle checks out. Main air int egrity is flawless. > > Any ideas / guidance would be mucho appreciato! > > Many thanx! > > Rico Jaeger > 915 S. 11th Ave. > Wausau, WI. 54401 > 715.529.7426 > // > 1969 Cessna 150J ^/---//-X > N61333 // > Hangar #35 / AUW > // > 1992 Yakovlev Yak 52 ^/---//-X > N21YK // > Hangar #21 / AUW > > ________________________________ Message 8 _____________________________________ Time: 10:28:16 PM PST US From: Jon Boede Subject: Yak-List: Intake tubage Swap the carb - easy peasy. Get the #5 intake tube to go back in - %#$&@!! Anybody have a trick they want to share? Does the tube go in first and you work the rubber ring in after, or is (supposedly) easier to start with the rubber ring at the top of the tube and slide the tube in through it? Jon ------------------------------------------------------------------------------------- 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.