---------------------------------------------------------- Yak-List Digest Archive --- Total Messages Posted Tue 03/19/19: 12 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:54 AM - Re: Carb swap, manifold pressure oddness (jay-dub) 2. 07:29 AM - Re: Re: Carb swap, manifold pressure oddness (Richard Goode) 3. 08:02 AM - Re: Carb swap, manifold pressure oddness (jay-dub) 4. 10:55 AM - Re: Re: Carb swap, manifold pressure oddness (Walter Lannon) 5. 11:59 AM - Prop won't slow below 70% (glipaz) 6. 12:33 PM - Re: Prop won't slow below 70% (Richard Goode) 7. 01:19 PM - Re: Prop won't slow below 70% (Walter Lannon) 8. 02:59 PM - Re: Prop won't slow below 70% (A. Dennis Savarese) 9. 03:18 PM - Re: Prop won't slow below 70% (George Coy) 10. 03:19 PM - Re: Prop won't slow below 70% (A. Dennis Savarese) 11. 03:22 PM - Re: Prop won't slow below 70% (A. Dennis Savarese) 12. 08:12 PM - Re: Prop won't slow below 70% (Walter Lannon) ________________________________ Message 1 _____________________________________ Time: 05:54:23 AM PST US Subject: Yak-List: Re: Carb swap, manifold pressure oddness From: "jay-dub" Having pulled ours apart at the weekend, this cracking (no.5, coupled with a poor design) was the cause of our deadstick, not our original conclusion. Richard, I presume the pipes for the M14P also fit the HS-6? I had a look at G-BVVG the other day and they look to be the same as on G-YAKH. -------- CJ and Yak-52 owner Read this topic online here: http://forums.matronics.com/viewtopic.php?p=488144#488144 ________________________________ Message 2 _____________________________________ Time: 07:29:49 AM PST US From: "Richard Goode" Subject: RE: Yak-List: Re: Carb swap, manifold pressure oddness I'm sorry to say, but I don't know! As I'm sure you know, the background was that the Russians developed the AI 14 engine (260 hp) with Ivchenko, and the design was then taken from them and given to the new design bureau of Vedenyeev in Voronezh who developed the M 14 P family of engines. At the same time the Russians gave the design of the AI 14 to the Chinese, who made the HS-6 with 285 hp. We have wanted to get into the business of overhauling the Chinese engines, so obtained an old one, working on the assumption that it was going to be almost identical to the AI 14 for which we have all the technology and a lot of spares. However, in the event, it is a very different engine with many parts that are unique, to the extent that we realised we simply could not overhaul it! I can say that the M 14 exhaust has a slightly larger diameter than the HS-6, and this might well also be the case with the intake tubes, so I suspect you would need to measure them to be sure. Richard RICHARD GOODE AEROBATICS Rhodds Farm, Lyonshall, Hereford, HR5 3LW, UK Tel: +44 (0)1544 340120 Fax: +44 (0)1544 340129 e-mail: richard.goode@russianaeros.com www.russianaeros.com WORLD LEADERS IN RUSSIAN SPORTING AIRCRAFT & ENGINES In partnership with Aerometal Kft, Hungary. -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of jay-dub Sent: 19 March 2019 12:54 Subject: Yak-List: Re: Carb swap, manifold pressure oddness Having pulled ours apart at the weekend, this cracking (no.5, coupled with a poor design) was the cause of our deadstick, not our original conclusion. Richard, I presume the pipes for the M14P also fit the HS-6? I had a look at G-BVVG the other day and they look to be the same as on G-YAKH. -------- CJ and Yak-52 owner Read this topic online here: http://forums.matronics.com/viewtopic.php?p=488144#488144 ________________________________ Message 3 _____________________________________ Time: 08:02:52 AM PST US Subject: Yak-List: Re: Carb swap, manifold pressure oddness From: "jay-dub" Thank for the information. -------- CJ and Yak-52 owner Read this topic online here: http://forums.matronics.com/viewtopic.php?p=488146#488146 ________________________________ Message 4 _____________________________________ Time: 10:55:12 AM PST US From: "Walter Lannon" Subject: Re: Yak-List: Re: Carb swap, manifold pressure oddness The intake tubes of the Huosai 6A and the M14P are exactly the same dia. However the cylinder adaptor has a slightly larger thread dia. and the attaching nut has a corresponding larger thread dia. so they are not interchangeable even though the same pin wrench fits both! Walt -----Original Message----- From: jay-dub Sent: Tuesday, March 19, 2019 5:54 AM Subject: Yak-List: Re: Carb swap, manifold pressure oddness Having pulled ours apart at the weekend, this cracking (no.5, coupled with a poor design) was the cause of our deadstick, not our original conclusion. Richard, I presume the pipes for the M14P also fit the HS-6? I had a look at G-BVVG the other day and they look to be the same as on G-YAKH. -------- CJ and Yak-52 owner Read this topic online here: http://forums.matronics.com/viewtopic.php?p=488144#488144 --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus ________________________________ Message 5 _____________________________________ Time: 11:59:53 AM PST US Subject: Yak-List: Prop won't slow below 70% From: "glipaz" To the brain tank: I have a stock M-14P motor with a stock hub, Russian v530 paddle prop, and rebuilt prop governor. Prop is at 16 degrees per the book. In flight I am not able to get the RPM to go below 70% even with the prop lever all the way back at the gate. I was advised to increase the size of the spring in the prop governor but Jill suggested that with all stock setup that should not be necessary. Any ideas or thoughts? Gil Read this topic online here: http://forums.matronics.com/viewtopic.php?p=488151#488151 ________________________________ Message 6 _____________________________________ Time: 12:33:55 PM PST US From: "Richard Goode" Subject: RE: Yak-List: Prop won't slow below 70% The standard R-2 Russian governor will generate enough oil pressure for the Russian V-530 prop, although you do need to install higher pressure springs for MT and Whirlwind props. But I would suggest that you are having a blockage of oil either into or out of the governor. There are quite narrow oil ways, and a gauze filter underneath the governor and if anything is blocked, clearly the governor will not work correctly. Richard RICHARD GOODE AEROBATICS Rhodds Farm, Lyonshall, Hereford, HR5 3LW, UK Tel: +44 (0)1544 340120 Fax: +44 (0)1544 340129 e-mail: richard.goode@russianaeros.com www.russianaeros.com WORLD LEADERS IN RUSSIAN SPORTING AIRCRAFT & ENGINES In partnership with Aerometal Kft, Hungary. -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of glipaz Sent: 19 March 2019 19:00 Subject: Yak-List: Prop won't slow below 70% To the brain tank: I have a stock M-14P motor with a stock hub, Russian v530 paddle prop, and rebuilt prop governor. Prop is at 16 degrees per the book. In flight I am not able to get the RPM to go below 70% even with the prop lever all the way back at the gate. I was advised to increase the size of the spring in the prop governor but Jill suggested that with all stock setup that should not be necessary. Any ideas or thoughts? Gil Read this topic online here: http://forums.matronics.com/viewtopic.php?p=488151#488151 ________________________________ Message 7 _____________________________________ Time: 01:19:10 PM PST US From: "Walter Lannon" Subject: Re: Yak-List: Prop won't slow below 70% No; Just questions; Is this M14P on a CJ? Which book put the fine pitch setting at 16 degs.? That is the correct setting for the Chinese prop. on the Huosai engine. The book setting for the V530 with stock blades on the M14P is 14.5 degs. However that is a different problem than what you describe which I suspect is an incorrect governor set-up procedure. Have not read it for a while but If I remember correctly the Russian procedure is poorly written and confusing while the Chinese is simple and straightforward. Numbers of course are different! But the basic process is the same. I would not buy life insurance from whomever told you to replace the "speeder" spring in the governor. Jill's advice here was most certainly correct not to mention extremely polite. Walt -----Original Message----- From: glipaz Sent: Tuesday, March 19, 2019 11:59 AM Subject: Yak-List: Prop won't slow below 70% To the brain tank: I have a stock M-14P motor with a stock hub, Russian v530 paddle prop, and rebuilt prop governor. Prop is at 16 degrees per the book. In flight I am not able to get the RPM to go below 70% even with the prop lever all the way back at the gate. I was advised to increase the size of the spring in the prop governor but Jill suggested that with all stock setup that should not be necessary. Any ideas or thoughts? Gil Read this topic online here: http://forums.matronics.com/viewtopic.php?p=488151#488151 --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus ________________________________ Message 8 _____________________________________ Time: 02:59:27 PM PST US From: "A. Dennis Savarese" Subject: Re: Yak-List: Prop won't slow below 70% Have you removed and cleaned the prop governor oil screen on the right sid e of the nose case? Dennis On Tuesday, March 19, 2019, 3:35:57 PM EDT, Richard Goode wrote: s.com> The standard R-2 Russian governor will generate enough oil pressure for the Russian V-530 prop, although you do need to install higher pressure springs for MT and Whirlwind props. But I would suggest that you are having a blockage of oil either into or ou t of the governor. There are quite narrow oil ways, and a gauze filter underneath the governor and if anything is blocked, clearly the governor will not work correctly. Richard RICHARD GOODE AEROBATICS Rhodds Farm, Lyonshall, Hereford, HR5 3LW, UK Tel:=C2- +44 (0)1544 340120=C2-=C2- Fax:=C2- +44 (0)1544 340129 e-mail: richard.goode@russianaeros.com www.russianaeros.com WORLD LEADERS IN RUSSIAN SPORTING AIRCRAFT & ENGINES In partnership with Aerometal Kft, Hungary. -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of glipaz Sent: 19 March 2019 19:00 Subject: Yak-List: Prop won't slow below 70% To the brain tank: I have a stock M-14P motor with a stock hub, Russian v530 paddle prop, and rebuilt prop governor. Prop is at 16 degrees per the book.=C2- In flight I am not able to get th e RPM to go below 70% even with the prop lever all the way back at the gate.=C2 - I was advised to increase the size of the spring in the prop governor but Jil l suggested that with all stock setup that should not be necessary.=C2- Any ideas or thoughts? Gil Read this topic online here: http://forums.matronics.com/viewtopic.php?p=488151#488151 S - WIKI - - =C2- =C2- =C2- =C2- =C2- -Matt Dralle, List Admin. ________________________________ Message 9 _____________________________________ Time: 03:18:46 PM PST US From: "George Coy" Subject: RE: Yak-List: Prop won't slow below 70% The speeder spring was sold (by MT Propeller) to increase the pressure or the Russian R2 governor for use on early MT9 propellers. Later MT design did not require the speeder spring. Sometimes we simply added a 1/4 in washer under the spring. George Coy -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Walter Lannon Sent: Tuesday, March 19, 2019 4:17 PM Subject: Re: Yak-List: Prop won't slow below 70% No; Just questions; Is this M14P on a CJ? Which book put the fine pitch setting at 16 degs.? That is the correct setting for the Chinese prop. on the Huosai engine. The book setting for the V530 with stock blades on the M14P is 14.5 degs. However that is a different problem than what you describe which I suspect is an incorrect governor set-up procedure. Have not read it for a while but If I remember correctly the Russian procedure is poorly written and confusing while the Chinese is simple and straightforward. Numbers of course are different! But the basic process is the same. I would not buy life insurance from whomever told you to replace the "speeder" spring in the governor. Jill's advice here was most certainly correct not to mention extremely polite. Walt -----Original Message----- From: glipaz Sent: Tuesday, March 19, 2019 11:59 AM Subject: Yak-List: Prop won't slow below 70% To the brain tank: I have a stock M-14P motor with a stock hub, Russian v530 paddle prop, and rebuilt prop governor. Prop is at 16 degrees per the book. In flight I am not able to get the RPM to go below 70% even with the prop lever all the way back at the gate. I was advised to increase the size of the spring in the prop governor but Jill suggested that with all stock setup that should not be necessary. Any ideas or thoughts? Gil Read this topic online here: http://forums.matronics.com/viewtopic.php?p=488151#488151 --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus ________________________________ Message 10 ____________________________________ Time: 03:19:17 PM PST US From: "A. Dennis Savarese" Subject: Re: Yak-List: Prop won't slow below 70% You should listen to Walt because he is right on the money.=C2- Besides the incorrect blade angle setting, setting up the prop governor is probably where your problem is.=C2-=C2- If you haven't set up an M14 prop gover nor before, it would be best to find someone who has.=C2- Otherwise it tr uly is hit and miss (mostly miss to be honest with you). Dennis On Tuesday, March 19, 2019, 4:21:18 PM EDT, Walter Lannon wrote: No; Just questions; Is this M14P on a CJ? Which book put the fine pitch setting at 16 degs.?=C2- That is the correc t setting for the Chinese prop. on the Huosai engine. The book setting for the V530 with stock blades on the M14P is 14.5 degs. However that is a different problem than what you describe which I suspect is an incorrect governor set-up procedure.=C2- Have not read it for a whi le but If I remember correctly the Russian procedure is poorly written and confusing while the Chinese is simple and straightforward.=C2- Numbers of course are different! But the basic process is the same. I would not buy life insurance from whomever told you to replace the "speeder" spring in the governor.=C2- Jill's advice here was most certain ly correct not to mention extremely polite. Walt -----Original Message----- From: glipaz Sent: Tuesday, March 19, 2019 11:59 AM Subject: Yak-List: Prop won't slow below 70% To the brain tank: I have a stock M-14P motor with a stock hub, Russian v530 paddle prop, and rebuilt prop governor. Prop is at 16 degrees per the book.=C2- In flight I am not able to get th e RPM to go below 70% even with the prop lever all the way back at the gate.=C2 - I was advised to increase the size of the spring in the prop governor but Jil l suggested that with all stock setup that should not be necessary. Any ideas or thoughts? Gil Read this topic online here: http://forums.matronics.com/viewtopic.php?p=488151#488151 --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus S - WIKI - - =C2- =C2- =C2- =C2- =C2- -Matt Dralle, List Admin. ________________________________ Message 11 ____________________________________ Time: 03:22:01 PM PST US From: "A. Dennis Savarese" Subject: Re: Yak-List: Prop won't slow below 70% Have you removed and cleaned the prop governor oil screen on the right sid e of the nose case? Dennis On Tuesday, March 19, 2019, 3:35:57 PM EDT, Richard Goode wrote: s.com> The standard R-2 Russian governor will generate enough oil pressure for the Russian V-530 prop, although you do need to install higher pressure springs for MT and Whirlwind props. But I would suggest that you are having a blockage of oil either into or ou t of the governor. There are quite narrow oil ways, and a gauze filter underneath the governor and if anything is blocked, clearly the governor will not work correctly. Richard RICHARD GOODE AEROBATICS Rhodds Farm, Lyonshall, Hereford, HR5 3LW, UK Tel:=C2- +44 (0)1544 340120=C2-=C2- Fax:=C2- +44 (0)1544 340129 e-mail: richard.goode@russianaeros.com www.russianaeros.com WORLD LEADERS IN RUSSIAN SPORTING AIRCRAFT & ENGINES In partnership with Aerometal Kft, Hungary. -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of glipaz Sent: 19 March 2019 19:00 Subject: Yak-List: Prop won't slow below 70% To the brain tank: I have a stock M-14P motor with a stock hub, Russian v530 paddle prop, and rebuilt prop governor. Prop is at 16 degrees per the book.=C2- In flight I am not able to get th e RPM to go below 70% even with the prop lever all the way back at the gate.=C2 - I was advised to increase the size of the spring in the prop governor but Jil l suggested that with all stock setup that should not be necessary.=C2- Any ideas or thoughts? Gil Read this topic online here: http://forums.matronics.com/viewtopic.php?p=488151#488151 S - WIKI - - =C2- =C2- =C2- =C2- =C2- -Matt Dralle, List Admin. ________________________________ Message 12 ____________________________________ Time: 08:12:49 PM PST US From: "Walter Lannon" Subject: Re: Yak-List: Prop won't slow below 70% -----Original Message----- From: Walter Lannon Sent: Tuesday, March 19, 2019 1:17 PM Subject: Re: Yak-List: Prop won't slow below 70% No; Just questions; Is this M14P on a CJ? Which book put the fine pitch setting at 16 degs.? That is the correct setting for the Chinese prop. on the Huosai engine. The book setting for the V530 with stock blades on the M14P is 14.5 degs. However that is a different problem than what you describe which I suspect is an incorrect governor set-up procedure. Have not read it for a while but If I remember correctly the Russian procedure is poorly written and confusing while the Chinese is simple and straightforward. Numbers of course are different! But the basic process is the same. I would not buy life insurance from whomever told you to replace the "speeder" spring in the governor. Jill's advice here was most certainly correct not to mention extremely polite. Walt -----Original Message----- From: glipaz Sent: Tuesday, March 19, 2019 11:59 AM Subject: Yak-List: Prop won't slow below 70% To the brain tank: I have a stock M-14P motor with a stock hub, Russian v530 paddle prop, and rebuilt prop governor. Prop is at 16 degrees per the book. In flight I am not able to get the RPM to go below 70% even with the prop lever all the way back at the gate. I was advised to increase the size of the spring in the prop governor but Jill suggested that with all stock setup that should not be necessary. Any ideas or thoughts? Gil Read this topic online here: http://forums.matronics.com/viewtopic.php?p=488151#488151 --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus ------------------------------------------------------------------------------------- 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.