---------------------------------------------------------- Yak-List Digest Archive --- Total Messages Posted Thu 07/27/17: 12 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 02:46 AM - B&C Alternator Conversion and Russian Horizon (jay-dub) 2. 03:28 AM - Re: B&C Alternator Conversion and Russian Horizon (Ttail) 3. 03:40 AM - Re: B&C Alternator Conversion and Russian Horizon (Yakjumper) 4. 03:50 AM - Re: Re: B&C Alternator Conversion and Russian Horizon (Ernest Martinez) 5. 03:51 AM - Re: B&C Alternator Conversion and Russian Horizon (jay-dub) 6. 03:54 AM - Re: Re: B&C Alternator Conversion and Russian Horizon (A. Dennis Savarese) 7. 07:26 AM - Re: Cleaning out the hangar (Richard Kelley) 8. 08:01 AM - Re: Cleaning out the hangar (Elmar & Manuela) 9. 08:03 AM - Re: Cleaning out the hangar (Elmar & Manuela) 10. 08:16 AM - Re: Cleaning out the hangar (Elmar & Manuela) 11. 08:56 AM - Re: [Non-DoD Source] B&C Alternator Conversion and Russian Horizon (Bitterlich, Mark G CIV NAVAIR, WD) 12. 09:46 AM - Cleaning out the hangar (Bitterlich, Mark G CIV NAVAIR, WD) ________________________________ Message 1 _____________________________________ Time: 02:46:32 AM PST US Subject: Yak-List: B&C Alternator Conversion and Russian Horizon From: "jay-dub" We're about to go for a B&C conversion into our Yak-52. Our mechanic, who has done several conversions (all EFIS!) is concerned that the B&C 35amp alternator may not be able to cope with the draw from the Russian horizon. We have one fitted in the front only. Any experience of this please? -------- CJ and Yak-52 owner Read this topic online here: http://forums.matronics.com/viewtopic.php?p=471307#471307 ________________________________ Message 2 _____________________________________ Time: 03:28:12 AM PST US Subject: Yak-List: Re: B&C Alternator Conversion and Russian Horizon From: "Ttail" I run that Alternator in a CJ with both front and back AH's fully operational .... never had an issue. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=471308#471308 ________________________________ Message 3 _____________________________________ Time: 03:40:02 AM PST US Subject: Yak-List: Re: B&C Alternator Conversion and Russian Horizon From: "Yakjumper" The original mechanical voltage regulator and horizon draw 3.6A (on startup a bit more) You can save 1 amp by using an electronic voltage supply for the horizon. The turn/bank also runs on that 3 phase voltage from the regulator. The electronic one also weighs less. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=471309#471309 ________________________________ Message 4 _____________________________________ Time: 03:50:34 AM PST US From: Ernest Martinez Subject: Re: Yak-List: Re: B&C Alternator Conversion and Russian Horizon The AI's and T&B are powered by mechanical Inverters (motor generators) which convert 28 vdc to AC 400hz (can't remember the voltage). On Thu, Jul 27, 2017 at 6:42 AM Yakjumper wrote: > > The original mechanical voltage regulator and horizon draw 3.6A (on > startup a bit more) > You can save 1 amp by using an electronic voltage supply for the horizon. > The turn/bank also runs on that 3 phase voltage from the regulator. > The electronic one also weighs less. > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=471309#471309 > > ________________________________ Message 5 _____________________________________ Time: 03:51:17 AM PST US Subject: Yak-List: Re: B&C Alternator Conversion and Russian Horizon From: "jay-dub" Thanks very much. I'll pass it on. -------- CJ and Yak-52 owner Read this topic online here: http://forums.matronics.com/viewtopic.php?p=471310#471310 ________________________________ Message 6 _____________________________________ Time: 03:54:49 AM PST US From: "A. Dennis Savarese" Subject: Re: Yak-List: Re: B&C Alternator Conversion and Russian Horizon 36 volts ACDennis From: Ernest Martinez To: yak-list@matronics.com Sent: Thursday, July 27, 2017 6:51 AM Subject: Re: Yak-List: Re: B&C Alternator Conversion and Russian Horizon The AI's and T&B are powered by mechanical Inverters (motor generators) whi ch convert 28 vdc to AC 400hz (can't remember the voltage).=C2- On Thu, Jul 27, 2017 at 6:42 AM Yakjumper wrote: The original mechanical voltage regulator and horizon draw 3.6A (on startup a bit more) You can save 1 amp by using an electronic voltage supply for the horizon. T he turn/bank also runs on that 3 phase voltage from the regulator. The electronic one also weighs less. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=471309#471309 List" rel="noreferrer" target="_blank">http://www.matronics.com/Navigat or?Yak-List FORUMS - eferrer" target="_blank">http://forums.matronics.com WIKI - errer" target="_blank">http://wiki.matronics.com b Site - =C2- =C2- =C2- =C2- =C2- -Matt Dralle, List Admin. rel="noreferrer" target="_blank">http://www.matronics.com/contribution ________________________________ Message 7 _____________________________________ Time: 07:26:18 AM PST US From: Richard Kelley Subject: Re: Yak-List: Cleaning out the hangar Would love to contact u off line what's the email? Sent from my iPhone > On Jul 26, 2017, at 6:05 PM, Elmar & Manuela wrote: > > A must-have for your CJ6 or YAK hangar! > 34 laminated HI-RES posters of the venerable M14P for sale. > Dimensions are 17 =C2=BD x 11 =C2=BD inches, please see attached pictures. > Only US$149 plus shipping (weight appr. 3lbs), PayPal preferred. > If interested, please contact me off list. > cheers > Elmar > > > > ________________________________ Message 8 _____________________________________ Time: 08:01:45 AM PST US From: Elmar & Manuela Subject: Yak-List: Re: Cleaning out the hangar The M14P posters have already found a new home, sorry about that. All the best, blue skies and happy landings. cheers Elmar ________________________________ Message 9 _____________________________________ Time: 08:03:46 AM PST US From: Elmar & Manuela Subject: Yak-List: Re: Cleaning out the hangar The M14P posters have already found a new home, sorry about that. All the best, blue skies and happy landings. cheers Elmar ________________________________ Message 10 ____________________________________ Time: 08:16:52 AM PST US Subject: Re: Yak-List: Cleaning out the hangar From: Elmar & Manuela Hi, sorry, but the posters have already found a new home. All the best. cheers Elmar On 17-07-27 07:24 AM, Richard Kelley wrote: > Would love to contact u off line what's the email? > > Sent from my iPhone > > On Jul 26, 2017, at 6:05 PM, Elmar & Manuela > wrote: > >> A must-have for your CJ6 or YAK hangar! >> >> 34 laminated HI-RES posters of the venerable M14P for sale. >> >> Dimensions are 17 x 11 inches, please see attached pictures. >> >> Only US$149 plus shipping (weight appr. 3lbs), PayPal preferred. >> >> If interested, please contact me off list. >> >> cheers >> >> Elmar >> >> >> >> >> ________________________________ Message 11 ____________________________________ Time: 08:56:00 AM PST US From: "Bitterlich, Mark G CIV NAVAIR, WD" Subject: RE: [Non-DoD Source] Yak-List: B&C Alternator Conversion and Russian Horizon The B&C SK-35 can easily handle the Motor/Generator or Inverter Power Supply (whatever name you choose to call it) used for the both of the AI's in the 52. With one warning. You must have your batteries in good condition. The SK-35 is rated at, amazingly enough, 35 amps. That said, I would not recommend pulling 35 amps out of it continuously. Personally on my installs, I have recommended a 30 amp circuit breaker versus 35, which still leaves you with over 800 watts of power. What I have learned is that the SK-35 is not tolerant of instantaneous current draws that exceed 35 amps directly to the alternator. This kind of situation would normally never happen UNLESS you have bad batteries (assuming two 12 volt batteries in series). Since we do not use batteries for starting, it is easy to miss the fact that the batteries are getting weak. Good enough to open an air valve and power shower of sparks to start the engine maybe... but then with the engine at idle, the batteries trying to charge, Inverters powered up, along with everything else, then yes... it is possible to take out the alternator under those conditions. This happened to a B&C equipped CJ at an airshow one year when a spectator happened to flip on the Master, it went unnoticed, and the batteries went dead. The owner jump started the airplane, so far so good. When the jumper cables were removed, the SK-35 had to assume all the load and all at once. POOF. $700+ alternator now inoperative. Another fact worth repeating once every few years or so is the fact that regardless of what charging system you are using, the AGM, or Gel Cell batteries typically used have a maximum charging voltage *AND* current. Both can easily be exceeded in our day to day operation, causing the battery to vent, lowering the capacity and leading to an eventual demise. If you run your batteries until they actually fail, again this is asking for bad things to happen. So once in a while, before starting the engine, turn on the master, look at your ba! ttery vo ltage, and then turn on a big load, like Pitot Heat for example. If the battery voltage drops down below 20 volts or so, it's time to replace the batteries. Yes, the short answer was simply that the SK-35 will be fine, as long as you have good batteries, but I repeat the long version every so often as I see folks installing TINY batteries to save weight, or whatever other reason, and then never realize there is another side to that coin. I.E. The smaller the batteries, the lower the maximum charging current, thus the above becomes more likely to happen. Mark -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of jay-dub Sent: Thursday, July 27, 2017 5:46 AM Subject: [Non-DoD Source] Yak-List: B&C Alternator Conversion and Russian Horizon We're about to go for a B&C conversion into our Yak-52. Our mechanic, who has done several conversions (all EFIS!) is concerned that the B&C 35amp alternator may not be able to cope with the draw from the Russian horizon. We have one fitted in the front only. Any experience of this please? -------- CJ and Yak-52 owner ________________________________ Message 12 ____________________________________ Time: 09:46:52 AM PST US From: "Bitterlich, Mark G CIV NAVAIR, WD" Subject: Yak-List: Cleaning out the hangar Ummm... well that might be: samira.h@shaw.ca -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Richard Kelley Sent: Thursday, July 27, 2017 10:24 AM Subject: [Non-DoD Source] Re: Yak-List: Cleaning out the hangar Would love to contact u off line what's the email? Sent from my iPhone On Jul 26, 2017, at 6:05 PM, Elmar & Manuela wrote: A must-have for your CJ6 or YAK hangar! 34 laminated HI-RES posters of the venerable M14P for sale. Dimensions are 17 x 11 inches, please see attached pictures. Only US$149 plus shipping (weight appr. 3lbs), PayPal preferred. If interested, please contact me off list. cheers Elmar ------------------------------------------------------------------------------------- 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.