---------------------------------------------------------- Yak-List Digest Archive --- Total Messages Posted Thu 02/21/19: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 08:19 AM - Carb Diaphragm for HS-6A (jay-dub) 2. 10:01 AM - Re: Carb Diaphragm for HS-6A (Anthony Savarese) 3. 10:15 AM - Re: Carb Diaphragm for HS-6A (jay-dub) 4. 12:24 PM - Re: Carb Diaphragm for HS-6A (Bitterlich, Mark G CIV NAVAIR, WD) 5. 12:35 PM - Re: Carb Diaphragm for HS-6A (jay-dub) ________________________________ Message 1 _____________________________________ Time: 08:19:17 AM PST US Subject: Yak-List: Carb Diaphragm for HS-6A From: "jay-dub" Having had a very quiet moment while airborne the other day, it is likely we need a new carb diaphragm. Our maintenance organisation has a diaphragm for the AK-14P carb. We think we need a QHQ-14A for the Huosai, which I will have to acquire. Are they by any chance interchangeable before I email Doug S? Thanks. -------- CJ and Yak-52 owner Read this topic online here: http://forums.matronics.com/viewtopic.php?p=487724#487724 ________________________________ Message 2 _____________________________________ Time: 10:01:00 AM PST US From: Anthony Savarese Subject: Re: Yak-List: Carb Diaphragm for HS-6A They are definitely NOT interchangeable. Tried it many, many years ago when I was trying to adapt the manual mixture control from the Huosai carburetor to the M14 carburetor. Dennis Sent from my iPhone > On Feb 21, 2019, at 11:18 AM, jay-dub wrote: > > > Having had a very quiet moment while airborne the other day, it is likely we need a new carb diaphragm. > > Our maintenance organisation has a diaphragm for the AK-14P carb. We think we need a QHQ-14A for the Huosai, which I will have to acquire. > > Are they by any chance interchangeable before I email Doug S? > > Thanks. > > -------- > CJ and Yak-52 owner > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=487724#487724 > > > > > > > > > ________________________________ Message 3 _____________________________________ Time: 10:15:55 AM PST US Subject: Yak-List: Re: Carb Diaphragm for HS-6A From: "jay-dub" Thanks Dennis. -------- CJ and Yak-52 owner Read this topic online here: http://forums.matronics.com/viewtopic.php?p=487726#487726 ________________________________ Message 4 _____________________________________ Time: 12:24:05 PM PST US From: "Bitterlich, Mark G CIV NAVAIR, WD" Subject: Re: Yak-List: Carb Diaphragm for HS-6A May I ask why you think you need a carb diaphragm ?? The reason I ask is simply because when one of them tears, or fails, it does not fix itself and then you fly home. If all of a sudden you start running very rich , etc., etc., yes. Or if the engine stops running... as in it totally stops running .... yes, probably. But if it stops in flight for a few moments and then starts running again... or something like that, it could be electrical as in mag coils. That can often be very difficult to define. You probably know all this already, so ... sorry. Mark -----Original Message----- From: owner-yak-list-server@matronics.com On Behalf Of Anthony Savarese Sent: Thursday, February 21, 2019 1:00 PM Subject: [Non-DoD Source] Re: Yak-List: Carb Diaphragm for HS-6A --> They are definitely NOT interchangeable. Tried it many, many years ago when I was trying to adapt the manual mixture control from the Huosai carburetor to the M14 carburetor. Dennis Sent from my iPhone > On Feb 21, 2019, at 11:18 AM, jay-dub wrote: > > > Having had a very quiet moment while airborne the other day, it is likely we need a new carb diaphragm. > > Our maintenance organisation has a diaphragm for the AK-14P carb. We think we need a QHQ-14A for the Huosai, which I will have to acquire. > > Are they by any chance interchangeable before I email Doug S? > > Thanks. > > -------- > CJ and Yak-52 owner > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=487724#487724 > > ________________________________ Message 5 _____________________________________ Time: 12:35:49 PM PST US Subject: Yak-List: Re: Carb Diaphragm for HS-6A From: "jay-dub" Hi Mark, Our thoughts are as follows. I was aerobatting and came off a loop to a strong smell of fuel in the cockpit. There were no engine issues at this stage. It cleared so I thought I'd carry on. The same occurred again and the engine missed but recovered so I took the hint and went home. I pulled the power back to 68/2000 and it missed twice more on the way home so I left the levers alone as it kept recovering. I recovered to the airfield from a forced landing pattern and the engine quit during the roll out as the airflow was seemingly driving the prop during the descent, so I effectively deadsticked it in. It glides much better than a -52!! Our thought is that it rich-cut as I pulled the throttle back for the descent. I've had a mag failure in a Yak-52 in the past which gave very similar symptoms other than there was no smell of fuel and the engine kept going after landing. Does that sound logical? In fairness, it will be handy to keep a diaphragm in stock anyway so I don't mind picking one up. -------- CJ and Yak-52 owner Read this topic online here: http://forums.matronics.com/viewtopic.php?p=487728#487728 ------------------------------------------------------------------------------------- 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.