Yak-List Digest Archive

Wed 04/04/12


Total Messages Posted: 19



Today's Message Index:
----------------------
 
     1. 04:47 AM - Re: CJ-7 Pictures (Harv)
     2. 05:42 AM - Re: Re: CJ-7 Pictures (Richard Hess)
     3. 12:07 PM - Re: CJ-7 Pictures (Harv)
     4. 01:25 PM - Re: Re: CJ-7 Pictures (Brian Lloyd)
     5. 01:37 PM - Voltage Regulator Replacement (Elmar & Manuela Hegenauer)
     6. 02:03 PM - Re: Voltage Regulator Replacement (George Coy)
     7. 02:34 PM - Re: Voltage Regulator Replacement (Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E)
     8. 02:34 PM - Re: Voltage Regulator Replacement (Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E)
     9. 02:47 PM - Re: Voltage Regulator Replacement (Elmar & Manuela Hegenauer)
    10. 02:47 PM - Re: Voltage Regulator Replacement (George Coy)
    11. 02:58 PM - Re: Re: g-meter for sale (Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E)
    12. 03:04 PM - Re: Re: CJ-7 Pictures (Richard Hess)
    13. 03:18 PM - Re: Re: Voltage Regulator Replacement (Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E)
    14. 03:19 PM - Re: Re: Voltage Regulator Replacement (Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E)
    15. 04:35 PM - Re: Voltage Regulator Replacement (Brian Lloyd)
    16. 06:19 PM - Re: Voltage Regulator Replacement (Didier Blouzard)
    17. 06:29 PM - Re: Re: CJ-7 Pictures (Sam Sax)
    18. 06:53 PM - Re: Re: Voltage Regulator Replacement (Sam Sax)
    19. 07:20 PM - Re: Re: CJ-7 Pictures (Richard Hess)
 
 
 


Message 1


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    Time: 04:47:49 AM PST US
    Subject: Re: CJ-7 Pictures
    From: "Harv" <martin.harvey@kbr.com>
    Oooah, tell us some more about the finer details of the CJ-6g :) Many differences to the CJ-6a? Rgs Harv Read this topic online here: http://forums.matronics.com/viewtopic.php?p=370014#370014


    Message 2


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    Time: 05:42:28 AM PST US
    Subject: Re: CJ-7 Pictures
    From: Richard Hess <hess737@aol.com>
    Well, I can't speak to the structural improvements but the aircraft was imp orted to Victoria Air Maintenance about 10 years ago. Joe Howse did the fli ght tests of the HS-6K engine (400 hp) and new three bladed prop. I would a verage 155-160 KTAS on 17 gph at 60% power, faaster if I so chose. There is a good size utility locker behind the space where the normal bagga ge compartment is located. In most other ways it is identical to the CJ-6A. I had Victoria do lots of upgrades: gear warning system, Sapp's inboard fu el tanks, full Garmin IFR package with Shadin and TruTrak A/P. An ADI out o f a fighter. The engine was particularly smooth and powerful. About 6 months ago the engine came to a clattering, frozen stop just prior to takeoff. Number 4 piston rod broke. I'd had hydraulic locks from it sitt ing from time to time but had always cleared the lock prior to start. So, w ith about 750 hours since new I needed a new engine. I had bought a freshly overhauled M-14P in the hopes that it would be more supportable long term. We took the wings off and put the airplane on an 18 wheeler to truck it to my facility, International Jets. The trucker did not follow our directions and ended up in a location where he had to make a very tight right turn, ran the trailer up on a curb and hi t my airplane's horizontal tail on a pole. The damage was significant and m y insurance company totaled the aircraft. I bought the salvage and we are i n the process of rebuilding Mongoose. She will fly again this year. Cheers Richard Hess C 404-964-4885 -----Original Message----- From: Harv <martin.harvey@kbr.com> Sent: Wed, Apr 4, 2012 7:48 am Subject: Yak-List: Re: CJ-7 Pictures Oooah, tell us some more about the finer details of the CJ-6g :) Many differences to the CJ-6a? Rgs arv ead this topic online here: http://forums.matronics.com/viewtopic.php?p=370014#370014 -= - The Yak-List Email Forum - -= Use the Matronics List Features Navigator to browse -= the many List utilities such as List Un/Subscription, -= Archive Search & Download, 7-Day Browse, Chat, FAQ, -= Photoshare, and much much more: - -= --> http://www.matronics.com/Navigator?Yak-List - -======================== -= - MATRONICS WEB FORUMS - -= Same great content also available via the Web Forums! - -= --> http://forums.matronics.com - -======================== -= - List Contribution Web Site - -= Thank you for your generous support! -= -Matt Dralle, List Admin. -= --> http://www.matronics.com/contribution -========================


    Message 3


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    Time: 12:07:12 PM PST US
    Subject: Re: CJ-7 Pictures
    From: "Harv" <martin.harvey@kbr.com>
    Richard Wow, thats a story and a half.... Sounds great but what a shame the aircraft was hydraulic locked and the truck driver smashed it! Hope you manage to get the damaged fixed and flying again. Do you have any details as to how the Chinese extracted 400hp from the Housai? I don't suppose you still have that engine you might consider selling for a rebuild? I'd be interested in it. Rgs Harv Read this topic online here: http://forums.matronics.com/viewtopic.php?p=370038#370038


    Message 4


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    Time: 01:25:41 PM PST US
    Subject: Re: CJ-7 Pictures
    From: Brian Lloyd <brian@lloyd.com>
    On Wednesday, April 4, 2012, Harv wrote: > > > > Do you have any details as to how the Chinese extracted 400hp from the MMO in both the fuel and the oil. Pay no attention to the boost and RPM increases. They have nothing to do with it. -- Brian Lloyd, WB6RQN/J79BPL 3191 Western Dr. Cameron Park, CA 95682 brian@lloyd.com +1.767.617.1365 (Dominica) +1.916.877.5067 (USA)


    Message 5


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    Time: 01:37:58 PM PST US
    From: Elmar & Manuela Hegenauer <samira.h@shaw.ca>
    Subject: Voltage Regulator Replacement
    Gentlemen (-women), finally I have received good news from Zeftronics. They are offering a solid state voltage regulator (with overvoltage protection) what might be fit to replace the obsolete Nanchang and YAK regulator. For your information I have attached 2 pdf files. If we get enough interest we could save some money in placing a collective/joint order, what do you think? cheers Elmar


    Message 6


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    Time: 02:03:42 PM PST US
    From: "George Coy" <george.coy@gmail.com>
    Subject: Voltage Regulator Replacement
    Interesting, I see two problems. First it is only good to 50 amps and our gernerators are rated higher than that. Second, the 1 off cost is almost as much as a replacement alternator with regulator. -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Elmar & Manuela Hegenauer Sent: Wednesday, April 04, 2012 4:34 PM Subject: Yak-List: Voltage Regulator Replacement Gentlemen (-women), finally I have received good news from Zeftronics. They are offering a solid state voltage regulator (with overvoltage protection) what might be fit to replace the obsolete Nanchang and YAK regulator. For your information I have attached 2 pdf files. If we get enough interest we could save some money in placing a collective/joint order, what do you think? cheers Elmar


    Message 7


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    Time: 02:34:06 PM PST US
    Subject: Voltage Regulator Replacement
    From: "Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E" <mark.bitterlich@navy.mil>
    Actually, there is nothing really wrong with the current Russian design, and I like it myself because I understand it and can work with it. That said, this unit would replace the TOTAL current electrical design, to include not only the voltage pile regulator, but also the over-voltage unit, along with the 200 "Combined Relay" device, although you might want to keep the bucking transformer that would still be in there. Our generators are in fact rated to about 100 amps, so the voltage regulator described here would not allow the generator to develop full output. That said, there are not too many people that are going to need 100 amps at 28 volts DC. That is one heck of a lot of current! But, that's just one small point, there are more important ones to consider. What you would be left with when doing this conversion would be a Russian Generator (very old design) with a very modern ... and very expensive .... control device. As long as the new unit was 100% reliable with a good reputation for low failure rate, and as long as Russian generators remain cheap, this might be an alternative worth considering. BUT!!!!! Personally, I have now installed a number of B&C SK-35 and SK-50 alternators. You are looking at about the same price (plus or minus a little) and you are getting not only a new LS1A voltage regulator, but you are also getting a brand new 35 or 50 amp alternator. This alternator is carefully built and balanced and does not have the complexity of the generator, needing reverse current protection, etc. Alternators are simply (in my opinion) a superior design as compared to old generators. I have no experience on converting CJ designs to B&C alternators, but for the YAKS, if I am going to pull all this old junk out anyway, I would strongly prefer the B&C alternators, versus keeping the existing Russian generator and then using a $975 regulator. Agreed that the price comes WAY down if you buy a bundle of them. Just my 2 cents, appreciate the info very much. Mark Bitterlich -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Elmar & Manuela Hegenauer Sent: Wednesday, April 04, 2012 13:34 Subject: Yak-List: Voltage Regulator Replacement Gentlemen (-women), finally I have received good news from Zeftronics. They are offering a solid state voltage regulator (with overvoltage protection) what might be fit to replace the obsolete Nanchang and YAK regulator. For your information I have attached 2 pdf files. If we get enough interest we could save some money in placing a collective/joint order, what do you think? cheers Elmar


    Message 8


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    Time: 02:34:07 PM PST US
    Subject: Voltage Regulator Replacement
    From: "Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E" <mark.bitterlich@navy.mil>
    I missed it. What was the cost? -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of George Coy Sent: Wednesday, April 04, 2012 13:59 Subject: RE: Yak-List: Voltage Regulator Replacement Interesting, I see two problems. First it is only good to 50 amps and our gernerators are rated higher than that. Second, the 1 off cost is almost as much as a replacement alternator with regulator. -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Elmar & Manuela Hegenauer Sent: Wednesday, April 04, 2012 4:34 PM Subject: Yak-List: Voltage Regulator Replacement Gentlemen (-women), finally I have received good news from Zeftronics. They are offering a solid state voltage regulator (with overvoltage protection) what might be fit to replace the obsolete Nanchang and YAK regulator. For your information I have attached 2 pdf files. If we get enough interest we could save some money in placing a collective/joint order, what do you think? cheers Elmar


    Message 9


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    Time: 02:47:34 PM PST US
    From: Elmar & Manuela Hegenauer <samira.h@shaw.ca>
    Subject: Re: Voltage Regulator Replacement
    George, I have some questions regarding your alternator conversion. Is it rated for the same ambient temperature in the engine compartment as the original generator? Are the installation costs of the whole alternator system less than compared to the replacement of a single voltage regulator? Can your alternation conversion be installed with complying to the rules of authorities in any other country but the US? Wouldn't it require expensive LSTCs, e.g. in Canada? Would your alternator conversion affect the C of G of the aircraft outside of the envelope? Is your alternator solution more reliable than the original generator? Could you please post the spec sheet what stipulates that the YAK 52 generator has more than 50 Amps output. Thank you in advance. cheers Elmar


    Message 10


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    Time: 02:47:45 PM PST US
    From: "George Coy" <george.coy@gmail.com>
    Subject: Voltage Regulator Replacement
    I forgot to mention that we have a draft service bulletin that was generated for Yak Design bureau to "officially" replace the Yak-52 generator system with the 50 amp alternator and regulator. Also saves about 30 lbs. I can post a copy if anyone is interested. The Yak design bureau went in to oblivion just as we were developing this. -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E Sent: Wednesday, April 04, 2012 5:30 PM Subject: RE: Yak-List: Voltage Regulator Replacement --> Point, MALS-14 64E" <mark.bitterlich@navy.mil> Actually, there is nothing really wrong with the current Russian design, and I like it myself because I understand it and can work with it. That said, this unit would replace the TOTAL current electrical design, to include not only the voltage pile regulator, but also the over-voltage unit, along with the 200 "Combined Relay" device, although you might want to keep the bucking transformer that would still be in there. Our generators are in fact rated to about 100 amps, so the voltage regulator described here would not allow the generator to develop full output. That said, there are not too many people that are going to need 100 amps at 28 volts DC. That is one heck of a lot of current! But, that's just one small point, there are more important ones to consider. What you would be left with when doing this conversion would be a Russian Generator (very old design) with a very modern ... and very expensive .... control device. As long as the new unit was 100% reliable with a good reputation for low failure rate, and as long as Russian generators remain cheap, this might be an alternative worth considering. BUT!!!!! Personally, I have now installed a number of B&C SK-35 and SK-50 alternators. You are looking at about the same price (plus or minus a little) and you are getting not only a new LS1A voltage regulator, but you are also getting a brand new 35 or 50 amp alternator. This alternator is carefully built and balanced and does not have the complexity of the generator, needing reverse current protection, etc. Alternators are simply (in my opinion) a superior design as compared to old generators. I have no experience on converting CJ designs to B&C alternators, but for the YAKS, if I am going to pull all this old junk out anyway, I would strongly prefer the B&C alternators, versus keeping the existing Russian generator and then using a $975 regulator. Agreed that the price comes WAY down if you buy a bundle of them. Just my 2 cents, appreciate the info very much. Mark Bitterlich -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Elmar & Manuela Hegenauer Sent: Wednesday, April 04, 2012 13:34 Subject: Yak-List: Voltage Regulator Replacement Gentlemen (-women), finally I have received good news from Zeftronics. They are offering a solid state voltage regulator (with overvoltage protection) what might be fit to replace the obsolete Nanchang and YAK regulator. For your information I have attached 2 pdf files. If we get enough interest we could save some money in placing a collective/joint order, what do you think? cheers Elmar


    Message 11


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    Time: 02:58:16 PM PST US
    Subject: RE: g-meter for sale
    From: "Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E" <mark.bitterlich@navy.mil>
    Richard, I enjoy a full mailbox as an indication of my notoriety, versus my popularity! :-) Roger on your comments. I get it. Mark -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Richard Goode Sent: Tuesday, April 03, 2012 0:23 Subject: RE: Yak-List: RE: g-meter for sale <richard.goode@russianaeros.com> Mark, you might enjoy a full mail-box as an indication of popularity, but if you do sell your 50,is there a chance that you might sell it as an aircraft, BUT if as a collection of parts, it would be great if you could avoid selling them item by item!! Richard Goode Rhodds Farm Lyonshall Hereford HR5 3LW Tel: +44 (0) 1544 340120 Fax: +44 (0) 1544 340129 www.russianaeros.com -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E Sent: 02 April 2012 23:34 Subject: RE: Yak-List: RE: g-meter for sale --> Point, MALS-14 64E" <mark.bitterlich@navy.mil> Richard, if I ever sell my YAK-50, ..... you will be amazed at the number of emails I generate my friend. :-) Mark -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Richard Goode Sent: Monday, April 02, 2012 8:22 Subject: RE: Yak-List: RE: g-meter for sale <richard.goode@russianaeros.com> Hi Elmar, I have no problem with your posting something relevant you want to sell, but it seemed that you are selling an entire aircraft, and were listing it part by part!! Richard Goode Rhodds Farm Lyonshall Hereford HR5 3LW Tel: +44 (0) 1544 340120 Fax: +44 (0) 1544 340129 www.russianaeros.com -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Elmar & Manuela Hegenauer Sent: 02 April 2012 15:51 Subject: Yak-List: RE: g-meter for sale --> <samira.h@shaw.ca> Richard, Didier, thank you for pointing that out. You are absolutely right, the list is not for selling things but provide valuable information to fellow pilots. I will not clog the list anymore with parts sale and move on to ebay. Thanks again and Blue Skies. cheers Elmar ----------------------------------------------- This message has been scanned for viruses and dangerous content by the Invictawiz MailScanner and is believed to be clean. http://www.invictawiz.com ----------------------------------------------- <br />-- <br />This message has been scanned for viruses and <br />dangerous content by the <a href="http://www.invictawiz.com/"><b>MailScanner</b></a>, <br />and is believed to be clean. ----------------------------------------------- This message has been scanned for viruses and dangerous content by the Invictawiz MailScanner and is believed to be clean. http://www.invictawiz.com ----------------------------------------------- <br />-- <br />This message has been scanned for viruses and <br />dangerous content by the <a href="http://www.invictawiz.com/"><b>MailScanner</b></a>, <br />and is believed to be clean.


    Message 12


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    Time: 03:04:21 PM PST US
    Subject: Re: CJ-7 Pictures
    From: Richard Hess <hess737@aol.com>
    Harv, Feel free to contact me off line. Richard Hess C 404-964-4885 -----Original Message----- From: Harv <martin.harvey@kbr.com> Sent: Wed, Apr 4, 2012 7:48 am Subject: Yak-List: Re: CJ-7 Pictures Oooah, tell us some more about the finer details of the CJ-6g :) Many differences to the CJ-6a? Rgs arv ead this topic online here: http://forums.matronics.com/viewtopic.php?p=370014#370014 -= - The Yak-List Email Forum - -= Use the Matronics List Features Navigator to browse -= the many List utilities such as List Un/Subscription, -= Archive Search & Download, 7-Day Browse, Chat, FAQ, -= Photoshare, and much much more: - -= --> http://www.matronics.com/Navigator?Yak-List - -======================== -= - MATRONICS WEB FORUMS - -= Same great content also available via the Web Forums! - -= --> http://forums.matronics.com - -======================== -= - List Contribution Web Site - -= Thank you for your generous support! -= -Matt Dralle, List Admin. -= --> http://www.matronics.com/contribution -========================


    Message 13


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    Time: 03:18:21 PM PST US
    Subject: Re: Voltage Regulator Replacement
    From: "Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E" <mark.bitterlich@navy.mil>
    I am not George. Sorry. I know that. However, the original generator is spec'ed to as I remember 3KW output. Take 3000 and divide it by output voltage and that is the maximum current. 100 amps is darn close. That is only with full cooling air flow applied to the generator. If you do not supply cooling air, rated output drops to about 20-25 amps or so. Specs can be found in any M-14P Operational manual and they are available on-line to anyone that wants to go look. Interesting question regarding Canada. Mark Bitterlich Never mind, I looked them up for you. Here are your specs. GENERATOR GSR-3000M, SERIES 4 - DESCRIPTION AND OPERATION 2.2. SPECIFICATIONS Voltage ........................................................ .......................................28.5 V Power (at 30 V) ................................................ ...................................3 kW Load current ...............................................................................100 A Speed of rotation .............................................. ..................................4000 to 9000 r/min Duty ........................................................... .........................................Continuous Permissible overloads: Permissible current at 5000 to 8000 r/min during 1 min ......................150 A Permissible current at 5600 to 8000 r/min during 5 a ......... ................200 A Permissible load current without air blowing for 15 min ...... ...............30A Nominal speed of rotation at load of 100 A and voltage of 28.5 V with short shunt (without regulator) when warmed up ............................................... .................................Up to 3600 r/min Forced cooling is carried out by blowing with on-coming non-heated clean air. Total air pressure at cooling inlet duct with dynamic pressure at least 50 mm HnO .......... ...................................................At least 150 mm HpO Air flow rate at barometric pressure of 760 mm Hg ............................. At least 35 dm /s Mass ......................................................... ..........................................Up to 11.6 kg Winding resistance at 20 C: Armature winding ............................................. ...................................0.024 ohm_M 0 % Fie Id winding ................................................ .....................................2.20 ohms^6 % Interpole winding ............................................ ....................................0.0122 ohm Brushes: Make ......................................................... ..........................................MGS-7I Number ................................................................................................8 pea Overall dimensions ........................................... ..................................7.2x12x25 mm Generator offers trouble-free operation when exposed to the following environmental and mechanical effects: Relative humidity . ................................................................................Up to 98 % Temperature variations .......................................................................From minus 60 to 50 C -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Elmar & Manuela Hegenauer Sent: Wednesday, April 04, 2012 14:45 Subject: Yak-List: Re: Voltage Regulator Replacement George, I have some questions regarding your alternator conversion. Is it rated for the same ambient temperature in the engine compartment as the original generator? Are the installation costs of the whole alternator system less than compared to the replacement of a single voltage regulator? Can your alternation conversion be installed with complying to the rules of authorities in any other country but the US? Wouldn't it require expensive LSTCs, e.g. in Canada? Would your alternator conversion affect the C of G of the aircraft outside of the envelope? Is your alternator solution more reliable than the original generator? Could you please post the spec sheet what stipulates that the YAK 52 generator has more than 50 Amps output. Thank you in advance. cheers Elmar


    Message 14


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    Time: 03:19:10 PM PST US
    Subject: Re: Voltage Regulator Replacement
    From: "Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E" <mark.bitterlich@navy.mil>
    By the way: http://www.acroyak.net/img/M14PMotordescription.PDF Mark -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Elmar & Manuela Hegenauer Sent: Wednesday, April 04, 2012 14:45 Subject: Yak-List: Re: Voltage Regulator Replacement <samira.h@shaw.ca> George, I have some questions regarding your alternator conversion. Is it rated for the same ambient temperature in the engine compartment as the original generator? Are the installation costs of the whole alternator system less than compared to the replacement of a single voltage regulator? Can your alternation conversion be installed with complying to the rules of authorities in any other country but the US? Wouldn't it require expensive LSTCs, e.g. in Canada? Would your alternator conversion affect the C of G of the aircraft outside of the envelope? Is your alternator solution more reliable than the original generator? Could you please post the spec sheet what stipulates that the YAK 52 generator has more than 50 Amps output. Thank you in advance. cheers Elmar


    Message 15


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    Time: 04:35:49 PM PST US
    Subject: Re: Voltage Regulator Replacement
    From: Brian Lloyd <brian@lloyd.com>
    On Wednesday, April 4, 2012, Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E wrote: > MALS-14 64E" <mark.bitterlich@navy.mil <javascript:;>> > > > What you would be left with when doing this conversion would be a > Russian Generator (very old design) with a very modern ... and very > expensive .... control device. As long as the new unit was 100% > reliable with a good reputation for low failure rate, and as long as > Russian generators remain cheap, this might be an alternative worth > considering. > > BUT!!!!! > > > Personally, I have now installed a number of B&C SK-35 and SK-50 > alternators. You are looking at about the same price (plus or minus a > little) and you are getting not only a new LS1A voltage regulator, but > you are also getting a brand new 35 or 50 amp alternator. This > alternator is carefully built and balanced and does not have the > complexity of the generator, needing reverse current protection, etc. > Alternators are simply (in my opinion) a superior design as compared to > old generators. Amen. The advantages of the alternator, i.e. reduced weight, reduced complexity, increased performance, and increased reliability, completely outweigh trying to repair a failed generator system. -- Brian Lloyd, WB6RQN/J79BPL 3191 Western Dr. Cameron Park, CA 95682 brian@lloyd.com +1.767.617.1365 (Dominica) +1.916.877.5067 (USA)


    Message 16


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    Time: 06:19:16 PM PST US
    From: Didier Blouzard <didier.blouzard@gmail.com>
    Subject: Re: Voltage Regulator Replacement
    George I would appreciate a copy of it please as we are building our airworthiness. It would be interesting to include such modification in it. Thanks a lot Didier Le 4 avril 2012 23:42, George Coy <george.coy@gmail.com> a =E9crit : > > I forgot to mention that we have a draft service bulletin that was > generated > for Yak Design bureau to "officially" replace the Yak-52 generator system > with the 50 amp alternator and regulator. Also saves about 30 lbs. I can > post a copy if anyone is interested. The Yak design bureau went in to > oblivion just as we were developing this. > > -----Original Message----- > From: owner-yak-list-server@matronics.com > [mailto:owner-yak-list-server@matronics.com] On Behalf Of Bitterlich, > Mark G > CIV Det Cherry Point, MALS-14 64E > Sent: Wednesday, April 04, 2012 5:30 PM > To: yak-list@matronics.com > Subject: RE: Yak-List: Voltage Regulator Replacement > > --> Point, MALS-14 64E" <mark.bitterlich@navy.mil> > > Actually, there is nothing really wrong with the current Russian design, > and > I like it myself because I understand it and can work with it. That said , > this unit would replace the TOTAL current electrical design, to include n ot > only the voltage pile regulator, but also the over-voltage unit, along wi th > the 200 "Combined Relay" device, although you might want to keep the > bucking > transformer that would still be in there. > > Our generators are in fact rated to about 100 amps, so the voltage > regulator > described here would not allow the generator to develop full output. Tha t > said, there are not too many people that are going to need > 100 amps at 28 volts DC. That is one heck of a lot of current! But, > that's just one small point, there are more important ones to consider. > > > What you would be left with when doing this conversion would be a Russian > Generator (very old design) with a very modern ... and very expensive ... . > control device. As long as the new unit was 100% reliable with a good > reputation for low failure rate, and as long as Russian generators remain > cheap, this might be an alternative worth considering. > > BUT!!!!! > > > Personally, I have now installed a number of B&C SK-35 and SK-50 > alternators. You are looking at about the same price (plus or minus a > little) and you are getting not only a new LS1A voltage regulator, but yo u > are also getting a brand new 35 or 50 amp alternator. This alternator is > carefully built and balanced and does not have the complexity of the > generator, needing reverse current protection, etc. > Alternators are simply (in my opinion) a superior design as compared to o ld > generators. > > I have no experience on converting CJ designs to B&C alternators, but for > the YAKS, if I am going to pull all this old junk out anyway, I would > strongly prefer the B&C alternators, versus keeping the existing Russian > generator and then using a $975 regulator. > > Agreed that the price comes WAY down if you buy a bundle of them. > > Just my 2 cents, appreciate the info very much. > > Mark Bitterlich > > > -----Original Message----- > From: owner-yak-list-server@matronics.com > [mailto:owner-yak-list-server@matronics.com] On Behalf Of Elmar & Manuela > Hegenauer > Sent: Wednesday, April 04, 2012 13:34 > To: yak-list@matronics.com > Subject: Yak-List: Voltage Regulator Replacement > > Gentlemen (-women), > > finally I have received good news from > Zeftronics. They are offering a solid > state voltage regulator (with overvoltage > protection) what might be fit to replace the obsolete Nanchang and YAK > regulator. > > For your information I have attached 2 > pdf files. > > If we get enough interest we could > save some money in placing a > collective/joint order, what do you > think? > > cheers > > Elmar > > =========== =========== =========== =========== > > -- ____________________________ Didier BLOUZARD Directeur Commercial DATEXIS Portable : +33 6 51 84 48 02 Email: didier.blouzard@gmail.com <didier.blouzard@anolistech.fr>


    Message 17


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    Time: 06:29:20 PM PST US
    From: "Sam Sax" <cd001633@mindspring.com>
    Subject: Re: CJ-7 Pictures
    Hi Richard, I would welcome your response to Harv questions here, on the List. I am pretty sure many of us would love to read your comments and it is the kind of information the List was created for. Thanks for considering this, Sam Sax CJ-6A Miami, FL From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Richard Hess Sent: Wednesday, April 04, 2012 6:02 PM Subject: Re: Yak-List: Re: CJ-7 Pictures Harv, Feel free to contact me off line. Richard Hess C 404-964-4885 -----Original Message----- From: Harv <martin.harvey@kbr.com> Sent: Wed, Apr 4, 2012 7:48 am Subject: Yak-List: Re: CJ-7 Pictures Oooah, tell us some more about the finer details of the CJ-6g :) Many differences to the CJ-6a? Rgs Harv Read this topic online here: http://forums.matronics.com/viewtopic.php?p=370014#370014 et=_blank>http://www.matronics.com/Navigator?Yak-List p://forums.matronics.com blank>http://www.matronics.com/contribution


    Message 18


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    Time: 06:53:31 PM PST US
    From: "Sam Sax" <cd001633@mindspring.com>
    Subject: Re: Voltage Regulator Replacement
    Hi Elmar, I installed the B&C K-35 amp Alternator on my CJ-6A (M-14P engine, Whirlwind Prop) about ten years ago - LOVE it! It comes with the Regulator as Mark indicated and cost is about $1K for the complete system. No problem with engine compartment temps. Naturally it was designed to operate in that temp range. Removal of old Generator and installing new Alternator took 35 minutes. Cutting out and throwing away old regulator/filter and wiring another 30 minutes. Installing the Voltage regulator and new wiring including to the light in cockpit - 3 hours. Installing the B&C Alternator and Regulator saved a net 27 pounds. Definitely affected CG... Since I removed about 160 pounds of old radios from The compartment behind the rear seat, the Alternator net weight savings actually helped as I needed to put less Lead weight in the tail cone... Old generator known to be very reliable - my 10 years with the B&C Alternator pointing to a similar conclusion... As to paperwork for the Alternator conversion outside the U.S - I don't know... My two cents (5 cents now adjusted for inflation)... :-) Sam Sax CJ-6A Miami, FL -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Elmar & Manuela Hegenauer Sent: Wednesday, April 04, 2012 5:45 PM Subject: Yak-List: Re: Voltage Regulator Replacement --> <samira.h@shaw.ca> George, I have some questions regarding your alternator conversion. Is it rated for the same ambient temperature in the engine compartment as the original generator? Are the installation costs of the whole alternator system less than compared to the replacement of a single voltage regulator? Can your alternation conversion be installed with complying to the rules of authorities in any other country but the US? Wouldn't it require expensive LSTCs, e.g. in Canada? Would your alternator conversion affect the C of G of the aircraft outside of the envelope? Is your alternator solution more reliable than the original generator? Could you please post the spec sheet what stipulates that the YAK 52 generator has more than 50 Amps output. Thank you in advance. cheers Elmar


    Message 19


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    Time: 07:20:51 PM PST US
    Subject: Re: CJ-7 Pictures
    From: Richard Hess <hess737@aol.com>
    Sam, I thought I did tell you guys about the CJ-6G. The biggeediff was the engin e. Extremely smooth. 160 KTAS on 60% power. With 82 gallons of gas I could do about 600 nm. I seemed to leave normal CJs and Yaks behind above 5000 ft . I usually cruised with them at 50% power, 125 KIAS on 12 gph. I know the M-14P I'll put in it now won't be quite so smooth or powerful bu t I really wanted something more supportable. My biggest thanks go to the g uy who arranged for my replacement tail parts, and Doug Sapp for everything CJ. Without those guys reaching back into China was going to be expensive and months of delay. Hope this answers your questions. I really like my MOngoose and can't wait to have it flying again. Richard Hess C 404-964-4885 -----Original Message----- From: Sam Sax <cd001633@mindspring.com> Sent: Wed, Apr 4, 2012 9:29 pm Subject: RE: Yak-List: Re: CJ-7 Pictures Hi Richard, I would welcome your response to Harv questions here, on the List I am pretty sure many of us would love to read your comments and it is the kind of information the List was created for Thanks for considering this, Sam Sax CJ-6A Miami, FL From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@mat ronics.com] On Behalf Of Richard Hess Sent: Wednesday, April 04, 2012 6:02 PM Subject: Re: Yak-List: Re: CJ-7 Pictures Harv, Feel free to contact me off line. Richard Hess C 404-964-4885 -----Original Message----- From: Harv <martin.harvey@kbr.com> Sent: Wed, Apr 4, 2012 7:48 am Subject: Yak-List: Re: CJ-7 Pictures Oooah, tell us some more about the finer details of the CJ-6g :) Many differences to the CJ-6a? Rgs Harv Read this topic online here: http://forums.matronics.com/viewtopic.php?p=370014#370014 et=_blank>http://www.matronics.com/Navigator?Yak-List p://forums.matronics.com blank>http://www.matronics.com/contribution http://www.matronics.com/Navigator?Yak-List http://forums.matronics.com http://www.matronics.com/contribution -= - The Yak-List Email Forum - -= Use the Matronics List Features Navigator to browse -= the many List utilities such as List Un/Subscription, -= Archive Search & Download, 7-Day Browse, Chat, FAQ, -= Photoshare, and much much more: - -= --> http://www.matronics.com/Navigator?Yak-List - -======================== -= - MATRONICS WEB FORUMS - -= Same great content also available via the Web Forums! - -= --> http://forums.matronics.com - -======================== -= - List Contribution Web Site - -= Thank you for your generous support! -= -Matt Dralle, List Admin. -= --> http://www.matronics.com/contribution -========================




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