Yak-List Digest Archive

Sun 07/18/10


Total Messages Posted: 24



Today's Message Index:
----------------------
 
     1. 07:33 AM - Re: M14P Magneto (pilotdog57@aol.com)
     2. 07:33 AM - Re: M14P Magneto (Roger Kemp M.D.)
     3. 07:34 AM - Re: Re: AIR START FIXTURE (doug sapp)
     4. 07:43 AM - YAK down in Maine with fatalities (Roger Kemp M.D.)
     5. 07:53 AM - Re: Re: AIR START FIXTURE (Joe Howse)
     6. 07:53 AM - Re: Re: AIR START FIXTURE (KingCJ6@aol.com)
     7. 07:57 AM - Re: YAK down in Maine with fatalities (Eric Wobschall)
     8. 08:21 AM - Spare part- exhaust/heating system (Etienne Verhellen)
     9. 08:22 AM - Re: YAK down in Maine with fatalities (Roger Kemp M.D.)
    10. 08:31 AM - Re: Tire Question (A. Dennis Savarese)
    11. 08:37 AM - YAK down in Maine (Roger Kemp M.D.)
    12. 08:45 AM - Re: YAK down in Maine (A. Dennis Savarese)
    13. 08:45 AM - Re: YAK down in Maine (Byron Fox)
    14. 09:48 AM - 52 accident (Tom Johnson)
    15. 10:55 AM - Re: YAK down in Maine with fatalities (William Halverson)
    16. 10:58 AM - Re: YAK down in Maine with fatalities (William Halverson)
    17. 12:50 PM - Re: M14P Magneto (flyayak)
    18. 03:21 PM - Re: Re: M14P Magneto (pilotdog57@aol.com)
    19. 03:54 PM - Re: Re: M14P Magneto (Didier Blouzard)
    20. 04:18 PM - a few questions (Eric Wobschall)
    21. 04:19 PM - Re: Re: M14P Magneto (pilotdog57@aol.com)
    22. 05:25 PM - Re: a few questions (A. Dennis Savarese)
    23. 05:25 PM - Re: a few questions (A. Dennis Savarese)
    24. 07:15 PM - Re: 52 accident (Roger Kemp M.D.)
 
 
 


Message 1


  • INDEX
  • Back to Main INDEX
  • NEXT
  • Skip to NEXT Message
  • LIST
  • Reply to LIST Regarding this Message
  • SENDER
  • Reply to SENDER Regarding this Message
    Time: 07:33:58 AM PST US
    Subject: Re: M14P Magneto
    From: pilotdog57@aol.com
    I had exactly that problem with my M14P powered CJ- even the mag drop. After chasing it around as a mag problem it ended up being a blocked header tank vent- causing severe lean conditions ( white plug deposits) and stopages in flight with erratic mag checks after flight. Try checking your vents before disassembling your mags. It does not take much to block the vents. The hotter the day the more the problem will manifest itself because of expanding air in the header tank cutting off the fuel. Doug Zeissner Sent from my Verizon Wireless BlackBerry -----Original Message----- From: "flyayak" <sschne3082@aol.com> Sender: owner-yak-list-server@matronics.com Subject: Yak-List: M14P Magneto Hi YAK-Folks, first of all I want to thank you all for this great forum. It helps me a lot to solve several problems with my YAK 52 in the past. Now I have a question to all of you M14P experts. A few weeks ago, while riding in my YAK with 82% and climbing, after 20 minutes the engine stops two times short one after another only for a heartbeat. I stopped climbing immediately and closed the throttle. After that, I noticed a loss of power, while the engine runs smooth again. After checking the mags, with no noticeable problems I went back to the airfield, landed and while shutting down the prob it turned backwards a few cycles, which it hasnt done for the last 120 hours. I pulled the plugs (Dennis automotive conversion kit was installed two years ago and the plugs were till the last 30 hours) and they have showed a white surface, so it seems that the mixture was too lean. Therefore I changed the diaphragm of the carb, which was already inside since the last 25 years (!). It looks a bit crumpled but without any cracks. While test running the engine after this with the cowling off, it runs great on ground and shows every values in an acceptable range. After putting the cowling back on again I did a test run again and while switching to magneto #2 it stops intermittently for a second or so and shows also on both magnetos an excessive drop of rpm, that means round about 6-7%. It was a very hot day with outside temperatures of about 36C. At the moment it is very hot in Germany.... So, my question is, is it possible, that both coils in the mags went TU (I like this expression ;-)) while the engine get (very) hot? Any other advices? Thanks a lot in advance. Best regards Stefan Read this topic online here: http://forums.matronics.com/viewtopic.php?p=305269#305269


    Message 2


  • INDEX
  • Back to Main INDEX
  • PREVIOUS
  • Skip to PREVIOUS Message
  • NEXT
  • Skip to NEXT Message
  • LIST
  • Reply to LIST Regarding this Message
  • SENDER
  • Reply to SENDER Regarding this Message
    Time: 07:33:58 AM PST US
    From: "Roger Kemp M.D." <viperdoc@mindspring.com>
    Subject: M14P Magneto
    Stefan, Having riden that horse a couple of times, the senerio generally goes like this. You have been airborne for about 15 to 20 minutes when there what sounds like a backfire with the engine stopping for a heartbeat then resumes power as if nothing happened. Airborne mag checks do not show any real issues. If you continue to fly this process will intermitantly repeat itself with the same results. Check of the plugs and the timing on the ground will not turn up the problem unless you run the engine at nominal one or above for 15 to 20 minutes. That is not practical since that will overheat the engine. The problem most likely is in the mags and it is indeed a TU coil. The paper capacitor has failed but it takes a while for the coil to heat up facilitating a discharge that is transmitted to each plug on the bank resulting in spark that explodes the fuel air mixture in the supercharger via the open intake valve on that cylinder. Hope this helps. -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of flyayak Sent: Sunday, July 18, 2010 1:10 AM Subject: Yak-List: M14P Magneto Hi YAK-Folks, first of all I want to thank you all for this great forum. It helps me a lot to solve several problems with my YAK 52 in the past. Now I have a question to all of you M14P experts. A few weeks ago, while riding in my YAK with 82% and climbing, after 20 minutes the engine stops two times short one after another only for a heartbeat. I stopped climbing immediately and closed the throttle. After that, I noticed a loss of power, while the engine runs smooth again. After checking the mags, with no noticeable problems I went back to the airfield, landed and while shutting down the prob it turned backwards a few cycles, which it hasnt done for the last 120 hours. I pulled the plugs (Dennis automotive conversion kit was installed two years ago and the plugs were till the last 30 hours) and they have showed a white surface, so it seems that the mixture was too lean. Therefore I changed the diaphragm of the carb, which was already inside since the last 25 years (!). It looks a bit crumpled but without any cracks. While test running the engine after this with the cowling off, it runs great on ground and shows every values in an acceptable range. After putting the cowling back on again I did a test run again and while switching to magneto #2 it stops intermittently for a second or so and shows also on both magnetos an excessive drop of rpm, that means round about 6-7%. It was a very hot day with outside temperatures of about 36C. At the moment it is very hot in Germany.... So, my question is, is it possible, that both coils in the mags went TU (I like this expression ;-)) while the engine get (very) hot? Any other advices? Thanks a lot in advance. Best regards Stefan Read this topic online here: http://forums.matronics.com/viewtopic.php?p=305269#305269


    Message 3


  • INDEX
  • Back to Main INDEX
  • PREVIOUS
  • Skip to PREVIOUS Message
  • NEXT
  • Skip to NEXT Message
  • LIST
  • Reply to LIST Regarding this Message
  • SENDER
  • Reply to SENDER Regarding this Message
    Time: 07:34:29 AM PST US
    Subject: Re: AIR START FIXTURE
    From: doug sapp <dougsappllc@gmail.com>
    Guys, I have them in stock. Contact me off list please. Doug On Jul 17, 2010 8:47 PM, "Noplugs" <qas44n@yahoo.com> wrote: OK...where do I get one? Read this topic online here: http://forums.matronics.com/viewtopic.php?p=305264#305264


    Message 4


  • INDEX
  • Back to Main INDEX
  • PREVIOUS
  • Skip to PREVIOUS Message
  • NEXT
  • Skip to NEXT Message
  • LIST
  • Reply to LIST Regarding this Message
  • SENDER
  • Reply to SENDER Regarding this Message
    Time: 07:43:26 AM PST US
    From: "Roger Kemp M.D." <viperdoc@mindspring.com>
    Subject: YAK down in Maine with fatalities
    Anyone have any details on the accident with two fatalities in South Portland, Maine? The aircraft went down after taking off from Portland International Jetport landing on a city street apparently downtown. The two occupants of the YAK 52 were the fatalities. No one on the ground was injured despite the A/C augering in on a busy street. This happened about 1530 local Saturday. This was reported by AP news in today's Sunday edition of my local paper. Doc


    Message 5


  • INDEX
  • Back to Main INDEX
  • PREVIOUS
  • Skip to PREVIOUS Message
  • NEXT
  • Skip to NEXT Message
  • LIST
  • Reply to LIST Regarding this Message
  • SENDER
  • Reply to SENDER Regarding this Message
    Time: 07:53:32 AM PST US
    From: "Joe Howse" <joeh@shaw.ca>
    Subject: Re: AIR START FIXTURE
    > > OK...where do I get one? > > TRY DOUG, IT IS A CHINESE TOOL > > > > > > > > >


    Message 6


  • INDEX
  • Back to Main INDEX
  • PREVIOUS
  • Skip to PREVIOUS Message
  • NEXT
  • Skip to NEXT Message
  • LIST
  • Reply to LIST Regarding this Message
  • SENDER
  • Reply to SENDER Regarding this Message
    Time: 07:53:32 AM PST US
    From: KingCJ6@aol.com
    Subject: Re: AIR START FIXTURE
    Doug - what does this device do? Looks like I need one! Dave In a message dated 7/18/2010 7:34:44 A.M. Pacific Daylight Time, dougsappllc@gmail.com writes: Guys, I have them in stock. Contact me off list please. Doug On Jul 17, 2010 8:47 PM, "Noplugs" <_qas44n@yahoo.com_ (mailto:qas44n@yahoo.com) > wrote: --> Yak-List message posted by: "Noplugs" <_qas44n@yahoo.com_ (mailto:qas44n@yahoo.com) > OK...where do I get one? Read this topic online here: _http://forums.matronics.com/viewtopic.php?p=305264#305264_ (http://forums.matronics.com/viewtopic.php?p=305264#305264) ========== rget="_blank">http://www.matronics.com/Navigator?Yak-List ========== http://forums.matronics.com ========== le, List Admin. ="_blank">http://www.matronics.com/contribution ========== (http://www.matronics.com/Navigator?Yak-List) (http://www.matronics.com/contribution)


    Message 7


  • INDEX
  • Back to Main INDEX
  • PREVIOUS
  • Skip to PREVIOUS Message
  • NEXT
  • Skip to NEXT Message
  • LIST
  • Reply to LIST Regarding this Message
  • SENDER
  • Reply to SENDER Regarding this Message
    Time: 07:57:21 AM PST US
    From: Eric Wobschall <eric@buffaloskyline.com>
    Subject: Re: YAK down in Maine with fatalities
    I saw a TV news bit... Looks like power loss on takeoff, crash landing on a busy street. Rudder (but not vertical stabilizer) was off, along with the right wing partially shorn off. Fuselage looked intact, and therefore survivable, but apparently it wasn't, RIP. On Jul 18, 2010, at 10:42 AM, Roger Kemp M.D. wrote: > Anyone have any details on the accident with two fatalities in South > Portland, Maine? > The aircraft went down after taking off from Portland International > Jetport landing on a city street apparently downtown. The two > occupants of the YAK 52 were the fatalities. No one on the ground > was injured despite the A/C augering in on a busy street. This > happened about 1530 local Saturday. > This was reported by AP news in today=92s Sunday edition of my local > paper. > Doc > >


    Message 8


  • INDEX
  • Back to Main INDEX
  • PREVIOUS
  • Skip to PREVIOUS Message
  • NEXT
  • Skip to NEXT Message
  • LIST
  • Reply to LIST Regarding this Message
  • SENDER
  • Reply to SENDER Regarding this Message
    Time: 08:21:49 AM PST US
    From: "Etienne Verhellen" <etienne.verhellen@ba.com>
    Subject: Spare part- exhaust/heating system
    Hello fellow Yakkers, Looking for Yak 52 part for exhaust/fresh air/heating system : See page 43 of 48 of this document : http://www.yakwac.info/users/www/uploaded/2nd%20Yak-52%20WAC%20Rojunai.pdf Mechanic at the bottom of the page is holding the part we're looking for : tube with 3 connections : 1. one for fresh air 2. one connected to heat exchanger 3. one connection to exhaust. If you can help, please drop me a line : janie@yak52.fr Thank you very much, Enjoy the summer ! Fly safe, have FUN. Etienne Verhellen. http://www.flyforfun.be/?q=yaks -- This message is private and confidential and may also be legally privileged. If you have received this message in error, please email it back to the sender and immediately permanently delete it from your computer system. Please do not read, print, re-transmit, store or act in reliance on it or any attachments. British Airways may monitor email traffic data and also the content of emails, where permitted by law, for the purposes of security and staff training and in order to prevent or detect unauthorised use of the British Airways email system. Virus checking of emails (including attachments) is the responsibility of the recipient. British Airways Plc is a public limited company registered in England and Wales. Registered number: 1777777. Registered office: Waterside, PO Box 365, Harmondsworth, West Drayton, Middlesex, England, UB7 0GB. Additional terms and conditions are available on our website: www.ba.com


    Message 9


  • INDEX
  • Back to Main INDEX
  • PREVIOUS
  • Skip to PREVIOUS Message
  • NEXT
  • Skip to NEXT Message
  • LIST
  • Reply to LIST Regarding this Message
  • SENDER
  • Reply to SENDER Regarding this Message
    Time: 08:22:32 AM PST US
    From: "Roger Kemp M.D." <viperdoc@mindspring.com>
    Subject: YAK down in Maine with fatalities
    Survivability would depend on vertical G forces and forward G forces at impact. The Gx axis (vertical) and the Gy axis. The eyeball to great toe axis is the Gx axis. The downward then forward movement of the human body on impact could exert enough force to avulse the heart from the Aorta at its root attachment to the heart as well as fracture the cervical spine at the base of the skull effectively pithing the poor soul. There are some other fatal injuries that occur also. The two mentioned above are enough. Will be interested to see the cause. Doc From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Eric Wobschall Sent: Sunday, July 18, 2010 9:57 AM Subject: Re: Yak-List: YAK down in Maine with fatalities I saw a TV news bit... Looks like power loss on takeoff, crash landing on a busy street. Rudder (but not vertical stabilizer) was off, along with the right wing partially shorn off. Fuselage looked intact, and therefore survivable, but apparently it wasn't, RIP. On Jul 18, 2010, at 10:42 AM, Roger Kemp M.D. wrote: Anyone have any details on the accident with two fatalities in South Portland, Maine? The aircraft went down after taking off from Portland International Jetport landing on a city street apparently downtown. The two occupants of the YAK 52 were the fatalities. No one on the ground was injured despite the A/C augering in on a busy street. This happened about 1530 local Saturday. This was reported by AP news in today's Sunday edition of my local paper. Doc style="color: blue; text-decoration: underline; ">http://www.matronics.com/Navigator?Yak-List blue; text-decoration: underline; ">http://forums.matronics.com style="color: blue; text-decoration: underline; ">http://www.matronics.com/contribution


    Message 10


  • INDEX
  • Back to Main INDEX
  • PREVIOUS
  • Skip to PREVIOUS Message
  • NEXT
  • Skip to NEXT Message
  • LIST
  • Reply to LIST Regarding this Message
  • SENDER
  • Reply to SENDER Regarding this Message
    Time: 08:31:23 AM PST US
    From: "A. Dennis Savarese" <dsavarese0812@bellsouth.net>
    Subject: Re: Tire Question
    I believe you are correct Warren. My bad. Dennis ----- Original Message ----- From: Warren Hill To: yak-list@matronics.com Sent: Saturday, July 17, 2010 4:17 PM Subject: Re: Yak-List: Tire Question Dennis, Did you mean the 15 / 600 x 6? The regular 600 x 6 is too large, at least for the CJ. The wheel for the Cessna 337 nose wheel works well for this. Warren Hill On Jul 17, 2010, at 1:45 PM, A. Dennis Savarese wrote: Cleveland nose tire is 600 x 6. FWIW, Doug Sapp has the main wheel tires and tubes in stock. 1/2 the price of the new Desser tires. You will have to call Desser for the nose wheel tire and tube though. Dennis ----- Original Message ----- From: Roger Kemp M.D. To: yak-list@matronics.com Sent: Saturday, July 17, 2010 2:40 PM Subject: RE: Yak-List: Tire Question <viperdoc@mindspring.com> Aero Classic Mains 500 x 150 Nose 400 x 150 That is what the YAK 52 uses. If you go on Desser's website they have a chart that you can click on to verify what aircraft you are ordering tires for. Doc -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of skidmk Sent: Saturday, July 17, 2010 10:03 AM To: yak-list@matronics.com Subject: Yak-List: Tire Question Hi all,,, just did a search and can't find. size for desser main wheel tires on CJ, as well as cleveland size for nose wheel? Plane at hangar, not due to go there for a week. Need to order tires. thanks skidmk -------- Mike &quot;Skidmk&quot; Bourget Ottawa, Ontario Read this topic online here: http://forums.matronics.com/viewtopic.php?p=305178#305178 http://www.matronics================== ======<; via the Web href="http://forums.matronics.com">http://forums.matronics.com _p; generous bsp; href="http://www.matronics.com/contribution">http://www.matronics.com/c ================ href="http://www.matronics.com/Navigator?Yak-List">http://www.matronics .com/Navigator?Yak-List href="http://forums.matronics.com">http://forums.matronics.com href="http://www.matronics.com/contribution">http://www.matronics.com/c ontribution


    Message 11


  • INDEX
  • Back to Main INDEX
  • PREVIOUS
  • Skip to PREVIOUS Message
  • NEXT
  • Skip to NEXT Message
  • LIST
  • Reply to LIST Regarding this Message
  • SENDER
  • Reply to SENDER Regarding this Message
    Time: 08:37:56 AM PST US
    From: "Roger Kemp M.D." <viperdoc@mindspring.com>
    Subject: YAK down in Maine
    Below is the URL for the local paper concerning the accident. They have identified the pilot and passenger. http://www.pressherald.com/news/plane-crashes-in-s_-portland_2010-07-18.html My condolences to the families. Doc


    Message 12


  • INDEX
  • Back to Main INDEX
  • PREVIOUS
  • Skip to PREVIOUS Message
  • NEXT
  • Skip to NEXT Message
  • LIST
  • Reply to LIST Regarding this Message
  • SENDER
  • Reply to SENDER Regarding this Message
    Time: 08:45:05 AM PST US
    From: "A. Dennis Savarese" <dsavarese0812@bellsouth.net>
    Subject: Re: YAK down in Maine
    So sad. My deepest sympathy to the families. Dennis ----- Original Message ----- From: Roger Kemp M.D. To: yak-list@matronics.com Sent: Sunday, July 18, 2010 10:37 AM Subject: Yak-List: YAK down in Maine Below is the URL for the local paper concerning the accident. They have identified the pilot and passenger. http://www.pressherald.com/news/plane-crashes-in-s_-portland_2010-07-18.h tml My condolences to the families. Doc


    Message 13


  • INDEX
  • Back to Main INDEX
  • PREVIOUS
  • Skip to PREVIOUS Message
  • NEXT
  • Skip to NEXT Message
  • LIST
  • Reply to LIST Regarding this Message
  • SENDER
  • Reply to SENDER Regarding this Message
    Time: 08:45:51 AM PST US
    Subject: Re: YAK down in Maine
    From: Byron Fox <byronmfox@gmail.com>
    This is Mark Haskell's airplane. Mark's a tower controller at Portland International. Truly a fine guy. ...Blitz On Sun, Jul 18, 2010 at 8:37 AM, Roger Kemp M.D. <viperdoc@mindspring.com>wrote: > Below is the URL for the local paper concerning the accident. They have > identified the pilot and passenger. > > > http://www.pressherald.com/news/plane-crashes-in-s_-portland_2010-07-18.html > > > My condolences to the families. > > Doc > > * > > * > > -- Byron M. Fox 80 Milland Drive Mill Valley, CA 94941 415-307-2405


    Message 14


  • INDEX
  • Back to Main INDEX
  • PREVIOUS
  • Skip to PREVIOUS Message
  • NEXT
  • Skip to NEXT Message
  • LIST
  • Reply to LIST Regarding this Message
  • SENDER
  • Reply to SENDER Regarding this Message
    Time: 09:48:15 AM PST US
    From: "Tom Johnson" <tomjohnson@cox.net>
    Subject: 52 accident
    I am really bummed to hear about the -52 crash in Maine with 2 of our Yak brethren onboard. I was just in the process of writing a Yak Safety email last week, but didn't get it done. This is the third (3rd) multi-fatal Yak 52 accident in 2010. There have been 2 multi-fatal in T6s and a P51 loss in addition to several other warbird issues. PLEASE, take it slowly the remainder of this year. Do an extra FOD check. Watch the low level maneuvering. Many of us are flying less and working more. Double up the safety paranoia and be suspicious of everything. Have a great OSH for those that can make it. Tj --------------------------- Thomas Johnson, Airpower Insurance, LLC 36 West Ocotillo Road, Phoenix, AZ 85013-1235 Tel: 602-628-2701 or Toll Free: 866-475-9199 E: tomjohnson@cox.net or Fax: 623-321-5843 Free Quote: <http://www.airpowerinsurance.com/> www.airpowerinsurance.com * Privacy Information? See website. ** NO insurance can be started or changed by email until confirmed in writing.


    Message 15


  • INDEX
  • Back to Main INDEX
  • PREVIOUS
  • Skip to PREVIOUS Message
  • NEXT
  • Skip to NEXT Message
  • LIST
  • Reply to LIST Regarding this Message
  • SENDER
  • Reply to SENDER Regarding this Message
    Time: 10:55:08 AM PST US
    From: "William Halverson" <william@netpros.net>
    Subject: Re: YAK down in Maine with fatalities
    http://www.onlinesentinel.com/news/south-portland-plane-crash-kills-2_2010-07-17.html Officials identified the occupants as Mark Haskell of Brunswick and Thomas Casagrande of Portland. The plane was registered to Haskell, an air traffic controller for more than 20 years. +-----Original Message----- +From: Eric Wobschall [mailto:eric@buffaloskyline.com] +Sent: Sunday, July 18, 2010 07:57 AM +To: yak-list@matronics.com +Subject: Re: Yak-List: YAK down in Maine with fatalities + +I saw a TV news bit... Looks like power loss on takeoff, crash landing +on a busy street. Rudder (but not vertical stabilizer) was off, along +with the right wing partially shorn off. Fuselage looked intact, and +therefore survivable, but apparently it wasn't, RIP. + + +On Jul 18, 2010, at 10:42 AM, Roger Kemp M.D. wrote: + +> Anyone have any details on the accident with two fatalities in South +> Portland, Maine? +> The aircraft went down after taking off from Portland International +> Jetport landing on a city street apparently downtown. The two +> occupants of the YAK 52 were the fatalities. No one on the ground +> was injured despite the A/C augering in on a busy street. This +> happened about 1530 local Saturday. +> This was reported by AP news in todays Sunday edition of my local +> paper. +> Doc +> +> +> +> + +


    Message 16


  • INDEX
  • Back to Main INDEX
  • PREVIOUS
  • Skip to PREVIOUS Message
  • NEXT
  • Skip to NEXT Message
  • LIST
  • Reply to LIST Regarding this Message
  • SENDER
  • Reply to SENDER Regarding this Message
    Time: 10:58:04 AM PST US
    From: "William Halverson" <william@netpros.net>
    Subject: Re: YAK down in Maine with fatalities
    http://www.pressherald.com/news/plane-crashes-in-s_-portland_2010-07-18.html +-----Original Message----- +From: Eric Wobschall [mailto:eric@buffaloskyline.com] +Sent: Sunday, July 18, 2010 07:57 AM +To: yak-list@matronics.com +Subject: Re: Yak-List: YAK down in Maine with fatalities + +I saw a TV news bit... Looks like power loss on takeoff, crash landing +on a busy street. Rudder (but not vertical stabilizer) was off, along +with the right wing partially shorn off. Fuselage looked intact, and +therefore survivable, but apparently it wasn't, RIP. + + +On Jul 18, 2010, at 10:42 AM, Roger Kemp M.D. wrote: + +> Anyone have any details on the accident with two fatalities in South +> Portland, Maine? +> The aircraft went down after taking off from Portland International +> Jetport landing on a city street apparently downtown. The two +> occupants of the YAK 52 were the fatalities. No one on the ground +> was injured despite the A/C augering in on a busy street. This +> happened about 1530 local Saturday. +> This was reported by AP news in todays Sunday edition of my local +> paper. +> Doc +> +> +> +> + +


    Message 17


  • INDEX
  • Back to Main INDEX
  • PREVIOUS
  • Skip to PREVIOUS Message
  • NEXT
  • Skip to NEXT Message
  • LIST
  • Reply to LIST Regarding this Message
  • SENDER
  • Reply to SENDER Regarding this Message
    Time: 12:50:48 PM PST US
    Subject: Re: M14P Magneto
    From: "flyayak" <sschne3082@aol.com>
    Thank you for your fast reply. Doc: I read about the problem with the mags in the forum which will only occur if the engine is hot after 20-35 min. of flying. This and the mag drop/interruption was the reason why it comes into my mind, that there could be a problem with the mags. Doug: You talk about the header tank vents. This means the flapper valves on both sides connected to the main tanks, right? Sorry, because of my English, but it isnt good enough and my dictionary tell me that vent and valve there are two different meanings. If I understand it right, you mention that if the pressure in the header tank is to high and the valves are not in a good condition, there is not enough fuel flow from the main tanks to the header tank? Is it possible to check them without dismounting the header tank? Thanks Stefan Read this topic online here: http://forums.matronics.com/viewtopic.php?p=305339#305339


    Message 18


  • INDEX
  • Back to Main INDEX
  • PREVIOUS
  • Skip to PREVIOUS Message
  • NEXT
  • Skip to NEXT Message
  • LIST
  • Reply to LIST Regarding this Message
  • SENDER
  • Reply to SENDER Regarding this Message
    Time: 03:21:55 PM PST US
    Subject: Re: M14P Magneto
    From: pilotdog57@aol.com
    Stefan- On the CJ the two main tanks gravity feed to a small header tank. The outlet for the header tank is about 2/3 to 3/4 up from the bottom of the tank. This makes the header tank also a sump for water and other contaiminates. There is always a little area of air in the top of the header tank. When the vent line for the header is blocked that air bubble can not regulate itself and expands with any increase of temperture and/or altitude. That increased air bubble can interfere with fuel flow- it can do it in ways that mimic some magneto problems. It is easy to drain the fuel and with two people disconnect all the fuel vents and using appropriately sized tubing attached to the exposed vent line end either blow into or use VERY light air pressure to check that the vent lines are clear. Now it may still be a magneto problem- others have had similar symptoms and had different solutions- but a blocked header tank vent is what I had and finding the blockage fixed my problem. I had huge mag drops on the ground after a flight, sudden stoppages and restarts in the air with rough operation soon after that smoothed out eventually, and lean conditions no matter how the carb was adjusted. This problem took a long time to figure out, it did not happen every flight, and the higher and hotter the conditions the worse it would be. Doug Z ------Original Message------ From: flyayak Sender: owner-yak-list-server@matronics.com ReplyTo: yak-list@matronics.com Subject: Yak-List: Re: M14P Magneto Sent: Jul 18, 2010 12:50 PM Thank you for your fast reply. Doc: I read about the problem with the mags in the forum which will only occur if the engine is hot after 20-35 min. of flying. This and the mag drop/interruption was the reason why it comes into my mind, that there could be a problem with the mags. Doug: You talk about the header tank vents. This means the flapper valves on both sides connected to the main tanks, right? Sorry, because of my English, but it isnt good enough and my dictionary tell me that vent and valve there are two different meanings. If I understand it right, you mention that if the pressure in the header tank is to high and the valves are not in a good condition, there is not enough fuel flow from the main tanks to the header tank? Is it possible to check them without dismounting the header tank? Thanks Stefan Read this topic online here: http://forums.matronics.com/viewtopic.php?p=305339#305339 Sent from my Verizon Wireless BlackBerry


    Message 19


  • INDEX
  • Back to Main INDEX
  • PREVIOUS
  • Skip to PREVIOUS Message
  • NEXT
  • Skip to NEXT Message
  • LIST
  • Reply to LIST Regarding this Message
  • SENDER
  • Reply to SENDER Regarding this Message
    Time: 03:54:31 PM PST US
    From: Didier Blouzard <didier.blouzard@gmail.com>
    Subject: Re: M14P Magneto
    Hi all, regarding the tank vents. If I am not wrong there are three vents. Left tank, right tank and header tank. If you blow the vents with compressed air then you will have to take a lot of care that this air can go away. In the case of the left and right tank it is easy because you just have to open th e tank before blowing the vent. In the case of the header vent then you may b e carefull because if you blow it without opening the purge you will dammage the valve in the header tank....as I have been told.... My mechanical words are perhaps not the god one but still the result would be the same...take all precautions before blowing the vents. Perhaps Dennis or Doug could drop a word about this manipulation. All of us would like to be sure that our tank have a good connection to the air but i f we try to blow air let us just do it the right way. g'night Didier 2010/7/18 flyayak <sschne3082@aol.com> > > Thank you for your fast reply. > Doc: I read about the problem with the mags in the forum which will only > occur if the engine is hot after 20-35 min. of flying. This and the mag > drop/interruption was the reason why it comes into my mind, that there co uld > be a problem with the mags. > Doug: You talk about the header tank vents. This means the flapper valves > on both sides connected to the main tanks, right? Sorry, because of my > English, but it isn=B4t good enough and my dictionary tell me that vent a nd > valve there are two different meanings. If I understand it right, you > mention that if the pressure in the header tank is to high and the valves > are not in a good condition, there is not enough fuel flow from the main > tanks to the header tank? Is it possible to check them without dismountin g > the header tank? > Thanks > Stefan > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=305339#305339 > > =========== =========== =========== =========== > > -- Didier BLOUZARD didier.blouzard@gmail.com 0624243672


    Message 20


  • INDEX
  • Back to Main INDEX
  • PREVIOUS
  • Skip to PREVIOUS Message
  • NEXT
  • Skip to NEXT Message
  • LIST
  • Reply to LIST Regarding this Message
  • SENDER
  • Reply to SENDER Regarding this Message
    Time: 04:18:45 PM PST US
    From: Eric Wobschall <eric@buffaloskyline.com>
    Subject: a few questions
    1. What do we like for Yak-52 tire pressures? 40 nose, 45 mains? 42 all around? 2. Regarding that Yak-52 header tank vent mentioned earlier. So, if obstructed, that can cause leaning... if so, would or wouldn't the fuel pressure be lower than nominal? Would this cause elevated CHT? Finally (not being near the plane), where is this vent? I'm assuming under the fuselage forward of the header tank? If it is blocked, how do you test this? Unlike the wing tanks, you can't pressurize the vents and listen to the filler holes. Suggestions? Thanks in advance for input... -Eric


    Message 21


  • INDEX
  • Back to Main INDEX
  • PREVIOUS
  • Skip to PREVIOUS Message
  • NEXT
  • Skip to NEXT Message
  • LIST
  • Reply to LIST Regarding this Message
  • SENDER
  • Reply to SENDER Regarding this Message
    Time: 04:19:10 PM PST US
    Subject: Re: M14P Magneto
    From: pilotdog57@aol.com
    RGlkaWVyLQ0KWW91IGFyZSBjb3JyZWN0IGFib3V0IG5vdCB1c2luZyB0b28gbXVjaCBwcmVzc3Vy ZSBvbiB0aGUgZnVlbCB0YW5rcy4gV2UgZHJhaW5lZCBhbGwgb2YgdGhlIGZ1ZWwsIGRpY29ubmVj dGVkIHRoZSB2ZW50IGxpbmVzLCByZW1vdmVkIHRoZSBmdWVsIGNhcHMsIGFuZCB0aGUgYm90dG9t IHN1bXAgZml4dHVyZSBmcm9tIHRoZSBoZWFkZXIgdGFuay4gV2UgdXNlZCBzdXJnaWNhbCB0dWJp bmcgdG8gY29ubmVjdCB0byB0aGUgZW5kcyBvZiB0aGUgdmVudCB0dWJlcy0gdGhpcyBhbGxvd2Vk IG9uZSB0byBnZXQgdG8gdGhlIHZlbnQgdHViZSBlbmRzLSBhbmQgZWl0aGVyIGJsZXcgaW50byB0 aGVtIG9yIHVzZWQgb25seSBhcm91bmQgMiBwc2kgKDEvMTAgYXRtb3MpIHRvIGZpbmQgdGhlIGJs b2NrYWdlLiBXaGVuIHRoZSBibG9ja2FnZSB3YXMgaXNvbGF0ZWQgd2UgdG9vayBncmVhdCBjYXJl IG5vdCB0byBwcmVzc3VyaXplIGFueSBvZiB0aGUgZnVlbCB0YW5rcyBieSBoYXZpbmcgZXZlcnRo aW5nIG9wZW4gYW5kIHRoZSBlbmRzIG9mIHRoZSB2ZW50cyBmdWxseSBkaXNjb25uZWN0ZWQuIFRo ZW4gd2UgYmxldyBvdXQgdGhlIGJsb2NrYWdlIHdpdGggMTAwIFBTSSBhaXIgKDcgYXRtb3MpLiBJ dCBjYW4gdGFrZSBvbmx5IGFib3V0IDUgcHNpIHRvIHJ1aW4geW91ciBhbHVtaW51bSB0YW5rcy4u LiBTbyBiZSBjYXJlZnVsbC4NCkRvdWcgWmVpc3NuZXINClNlbnQgZnJvbSBteSBWZXJpem9uIFdp cmVsZXNzIEJsYWNrQmVycnkNCg0KLS0tLS1PcmlnaW5hbCBNZXNzYWdlLS0tLS0NCkZyb206IERp ZGllciBCbG91emFyZCA8ZGlkaWVyLmJsb3V6YXJkQGdtYWlsLmNvbT4NClNlbmRlcjogb3duZXIt eWFrLWxpc3Qtc2VydmVyQG1hdHJvbmljcy5jb20NCkRhdGU6IE1vbiwgMTkgSnVsIDIwMTAgMDE6 NTM6NTMgDQpUbzogPHlhay1saXN0QG1hdHJvbmljcy5jb20+DQpSZXBseS1UbzogeWFrLWxpc3RA bWF0cm9uaWNzLmNvbQ0KU3ViamVjdDogUmU6IFlhay1MaXN0OiBSZTogTTE0UCBNYWduZXRvDQoN CkhpIGFsbCwNCg0KcmVnYXJkaW5nIHRoZSB0YW5rIHZlbnRzLiBJZiBJIGFtIG5vdCB3cm9uZyB0 aGVyZSBhcmUgdGhyZWUgdmVudHMuIExlZnQNCnRhbmssIHJpZ2h0IHRhbmsgYW5kIGhlYWRlciB0 YW5rLiBJZiB5b3UgYmxvdyB0aGUgdmVudHMgd2l0aCBjb21wcmVzc2VkIGFpcg0KdGhlbiB5b3Ug d2lsbCBoYXZlIHRvIHRha2UgYSBsb3Qgb2YgY2FyZSB0aGF0IHRoaXMgYWlyIGNhbiBnbyBhd2F5 LiBJbiB0aGUNCmNhc2Ugb2YgdGhlIGxlZnQgYW5kIHJpZ2h0IHRhbmsgaXQgaXMgZWFzeSBiZWNh dXNlIHlvdSBqdXN0IGhhdmUgdG8gb3BlbiB0aGUNCnRhbmsgYmVmb3JlIGJsb3dpbmcgdGhlIHZl bnQuIEluIHRoZSBjYXNlIG9mIHRoZSBoZWFkZXIgdmVudCB0aGVuIHlvdSBtYXkgYmUNCmNhcmVm dWxsIGJlY2F1c2UgaWYgeW91IGJsb3cgaXQgd2l0aG91dCBvcGVuaW5nIHRoZSBwdXJnZSB5b3Ug d2lsbCBkYW1tYWdlDQp0aGUgdmFsdmUgaW4gdGhlIGhlYWRlciB0YW5rLi4uLmFzIEkgaGF2ZSBi ZWVuIHRvbGQuLi4uDQpNeSBtZWNoYW5pY2FsIHdvcmRzIGFyZSBwZXJoYXBzIG5vdCB0aGUgZ29k IG9uZSBidXQgc3RpbGwgdGhlIHJlc3VsdCB3b3VsZA0KYmUgdGhlIHNhbWUuLi50YWtlIGFsbCBw cmVjYXV0aW9ucyBiZWZvcmUgYmxvd2luZyB0aGUgdmVudHMuDQpQZXJoYXBzIERlbm5pcyBvciBE b3VnIGNvdWxkIGRyb3AgYSB3b3JkIGFib3V0IHRoaXMgbWFuaXB1bGF0aW9uLiBBbGwgb2YgdXMN CndvdWxkIGxpa2UgdG8gYmUgc3VyZSB0aGF0IG91ciB0YW5rIGhhdmUgYSBnb29kIGNvbm5lY3Rp b24gdG8gdGhlIGFpciBidXQgaWYNCndlIHRyeSB0byBibG93IGFpciBsZXQgdXMganVzdCBkbyBp dCB0aGUgcmlnaHQgd2F5Lg0KDQpnJ25pZ2h0DQoNCkRpZGllcg0KDQoyMDEwLzcvMTggZmx5YXlh ayA8c3NjaG5lMzA4MkBhb2wuY29tPg0KDQo+IC0tPiBZYWstTGlzdCBtZXNzYWdlIHBvc3RlZCBi eTogImZseWF5YWsiIDxzc2NobmUzMDgyQGFvbC5jb20+DQo+DQo+IFRoYW5rIHlvdSBmb3IgeW91 ciBmYXN0IHJlcGx5Lg0KPiBEb2M6IEkgcmVhZCBhYm91dCB0aGUgcHJvYmxlbSB3aXRoIHRoZSBt YWdzIGluIHRoZSBmb3J1bSB3aGljaCB3aWxsIG9ubHkNCj4gb2NjdXIgaWYgdGhlIGVuZ2luZSBp cyBob3QgYWZ0ZXIgMjAtMzUgbWluLiBvZiBmbHlpbmcuIFRoaXMgYW5kIHRoZSBtYWcNCj4gZHJv cC9pbnRlcnJ1cHRpb24gd2FzIHRoZSByZWFzb24gd2h5IGl0IGNvbWVzIGludG8gbXkgbWluZCwg dGhhdCB0aGVyZSBjb3VsZA0KPiBiZSBhIHByb2JsZW0gd2l0aCB0aGUgbWFncy4NCj4gRG91Zzog WW91IHRhbGsgYWJvdXQgdGhlIGhlYWRlciB0YW5rIHZlbnRzLiBUaGlzIG1lYW5zIHRoZSBmbGFw cGVyIHZhbHZlcw0KPiBvbiBib3RoIHNpZGVzIGNvbm5lY3RlZCB0byB0aGUgbWFpbiB0YW5rcywg cmlnaHQ/IFNvcnJ5LCBiZWNhdXNlIG9mIG15DQo+IEVuZ2xpc2gsIGJ1dCBpdCBpc260dCBnb29k IGVub3VnaCBhbmQgbXkgZGljdGlvbmFyeSB0ZWxsIG1lIHRoYXQgdmVudCBhbmQNCj4gdmFsdmUg dGhlcmUgYXJlIHR3byBkaWZmZXJlbnQgbWVhbmluZ3MuIElmIEkgdW5kZXJzdGFuZCBpdCByaWdo dCwgeW91DQo+IG1lbnRpb24gdGhhdCBpZiB0aGUgcHJlc3N1cmUgaW4gdGhlIGhlYWRlciB0YW5r IGlzIHRvIGhpZ2ggYW5kIHRoZSB2YWx2ZXMNCj4gYXJlIG5vdCBpbiBhIGdvb2QgY29uZGl0aW9u LCB0aGVyZSBpcyBub3QgZW5vdWdoIGZ1ZWwgZmxvdyBmcm9tIHRoZSBtYWluDQo+IHRhbmtzIHRv IHRoZSBoZWFkZXIgdGFuaz8gSXMgaXQgcG9zc2libGUgdG8gY2hlY2sgdGhlbSB3aXRob3V0IGRp c21vdW50aW5nDQo+IHRoZSBoZWFkZXIgdGFuaz8NCj4gVGhhbmtzDQo+IFN0ZWZhbg0KPg0KPg0K Pg0KPg0KPiBSZWFkIHRoaXMgdG9waWMgb25saW5lIGhlcmU6DQo+DQo+IGh0dHA6Ly9mb3J1bXMu bWF0cm9uaWNzLmNvbS92aWV3dG9waWMucGhwP3A9MzA1MzM5IzMwNTMzOQ0KPg0KPg0KPg0KPg0K Pg0KPg0KPg0KPT09PT09PT09PT09DQo9PT09PT09PT09PT0NCj09PT09PT09PT09PQ0KPT09PT09 PT09PT09DQo+DQo+DQo+DQo+DQoNCg0KLS0gDQpEaWRpZXIgQkxPVVpBUkQNCmRpZGllci5ibG91 emFyZEBnbWFpbC5jb20NCjA2MjQyNDM2NzINCg0K


    Message 22


  • INDEX
  • Back to Main INDEX
  • PREVIOUS
  • Skip to PREVIOUS Message
  • NEXT
  • Skip to NEXT Message
  • LIST
  • Reply to LIST Regarding this Message
  • SENDER
  • Reply to SENDER Regarding this Message
    Time: 05:25:27 PM PST US
    From: "A. Dennis Savarese" <dsavarese0812@bellsouth.net>
    Subject: Re: a few questions
    Mains - 42-44 PSI Nose - 36-38 PSI Dennis ----- Original Message ----- From: Eric Wobschall To: Yak-list@matronics.com Sent: Sunday, July 18, 2010 6:15 PM Subject: Yak-List: a few questions <eric@buffaloskyline.com> 1. What do we like for Yak-52 tire pressures? 40 nose, 45 mains? 42 all around? 2. Regarding that Yak-52 header tank vent mentioned earlier. So, if obstructed, that can cause leaning... if so, would or wouldn't the fuel pressure be lower than nominal? Would this cause elevated CHT? Finally (not being near the plane), where is this vent? I'm assuming under the fuselage forward of the header tank? If it is blocked, how do you test this? Unlike the wing tanks, you can't pressurize the vents and listen to the filler holes. Suggestions? Thanks in advance for input... -Eric


    Message 23


  • INDEX
  • Back to Main INDEX
  • PREVIOUS
  • Skip to PREVIOUS Message
  • NEXT
  • Skip to NEXT Message
  • LIST
  • Reply to LIST Regarding this Message
  • SENDER
  • Reply to SENDER Regarding this Message
    Time: 05:25:27 PM PST US
    From: "A. Dennis Savarese" <dsavarese0812@bellsouth.net>
    Subject: Re: a few questions
    The Yak 52 header tank vent line is tied into the main vent line which is below the fuselage. There is no separate, overboard vent line for the Yak 52 header tank. See attached drawing. Dennis ----- Original Message ----- From: Eric Wobschall To: Yak-list@matronics.com Sent: Sunday, July 18, 2010 6:15 PM Subject: Yak-List: a few questions <eric@buffaloskyline.com> 1. What do we like for Yak-52 tire pressures? 40 nose, 45 mains? 42 all around? 2. Regarding that Yak-52 header tank vent mentioned earlier. So, if obstructed, that can cause leaning... if so, would or wouldn't the fuel pressure be lower than nominal? Would this cause elevated CHT? Finally (not being near the plane), where is this vent? I'm assuming under the fuselage forward of the header tank? If it is blocked, how do you test this? Unlike the wing tanks, you can't pressurize the vents and listen to the filler holes. Suggestions? Thanks in advance for input... -Eric


    Message 24


  • INDEX
  • Back to Main INDEX
  • PREVIOUS
  • Skip to PREVIOUS Message
  • NEXT
  • Skip to NEXT Message
  • LIST
  • Reply to LIST Regarding this Message
  • SENDER
  • Reply to SENDER Regarding this Message
    Time: 07:15:50 PM PST US
    From: "Roger Kemp M.D." <viperdoc@mindspring.com>
    Subject: 52 accident
    Sage advice Tom Fly Safe All, Doc -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Tom Johnson Sent: Sunday, July 18, 2010 11:47 AM Subject: Yak-List: 52 accident I am really bummed to hear about the -52 crash in Maine with 2 of our Yak brethren onboard. I was just in the process of writing a Yak Safety email last week, but didn't get it done. This is the third (3rd) multi-fatal Yak 52 accident in 2010. There have been 2 multi-fatal in T6s and a P51 loss in addition to several other warbird issues. PLEASE, take it slowly the remainder of this year. Do an extra FOD check. Watch the low level maneuvering. Many of us are flying less and working more. Double up the safety paranoia and be suspicious of everything. Have a great OSH for those that can make it. Tj --------------------------- Thomas Johnson, Airpower Insurance, LLC 36 West Ocotillo Road, Phoenix, AZ 85013-1235 Tel: 602-628-2701 or Toll Free: 866-475-9199 E: tomjohnson@cox.net or Fax: 623-321-5843 Free Quote: <http://www.airpowerinsurance.com/> www.airpowerinsurance.com * Privacy Information? See website. ** NO insurance can be started or changed by email until confirmed in writing.




    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
  • 7-Day List Browse
  •   http://www.matronics.com/browse/yak-list
  • Browse Yak-List 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.

    -- Please support this service by making your Contribution today! --