---------------------------------------------------------- Yak-List Digest Archive --- Total Messages Posted Sat 08/31/13: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:14 AM - Re: Alternator Putting out MAX Current (=?iso-8859-1?Q?Lothar_M=E4tzler?=) 2. 03:19 AM - Re: Alternator Putting out MAX Current (ChangDriver) 3. 09:11 AM - Re: Re: Alternator Putting out MAX Current (Michael B. Cavanagh) ________________________________ Message 1 _____________________________________ Time: 12:14:02 AM PST US From: =?iso-8859-1?Q?Lothar_M=E4tzler?= Subject: Re: Yak-List: Alternator Putting out MAX Current I have an B&C alternator too in my Yak52 (excuse my austrian english). The problem I see is: The load current of the alternator or generator depens always from the currently use for the board net and the currently condition of the batteries (two 12V in serie). By the way, I have the problem to need every two years new batteries. Every time one off the twos is in high (inside) resistenz condition. I think the problem is that at the beginning the two new batteries are not 100% on the same load condition. Originally there was only one battery. Consequentially during load in the plan, the lower one is always let me say a halve volt below the nominal 28,8:2=13,9V however the other 14,9V. Probaly the lower one with the time will get high impedanz. This is because the Voltage controller does not now two batteries! It only can regulate the nominal 28,8 V. About your problem I mean the electronic voltage controller from the B&C alternator has only one power(ampere) regtulator and that is the max permitted power. This is an disadvantage compared with the original Generator controlling. Your problem is the current battery condition. If you check the current with the same speed half hour later, you will see the current at sam conditions is lower, because in the mean time. Have a nice day Lothar Matzler -----Ursprngliche Nachricht----- From: ChangDriver Sent: Saturday, August 31, 2013 3:05 AM Subject: Yak-List: Alternator Putting out MAX Current I have a B&C alternator and voltage regulator on my CJ. Today when running the engine at takeoff power, the alternator started putting out 35 amps (max current). Bus voltage is regulated at 28.8 volts. I have never seen it put out so much current. No lights on, etc. Just normal stuff. It typically runs around 5 amps or so. I have new batteries installed so that is not an issue. Bus voltage is 23.8 with engine not running. Any ideas?? Read this topic online here: http://forums.matronics.com/viewtopic.php?p=407798#407798 ________________________________ Message 2 _____________________________________ Time: 03:19:48 AM PST US Subject: Yak-List: Re: Alternator Putting out MAX Current From: "ChangDriver" Thanks for the reply. I have two brand new 12 v batteries in series to make the 24 v system. The current is RPM dependent. At idle there is no current. As RPM increases, the current rises. Like at 1200 rpm 4 amps, 1500, 12 amps, 2000, 22 amps, at t/o power of 2400 rpm 35 amps. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=407808#407808 ________________________________ Message 3 _____________________________________ Time: 09:11:02 AM PST US Subject: Re: Yak-List: Re: Alternator Putting out MAX Current From: "Michael B. Cavanagh" Voltage regulator is not working, check your connections, but your throttle is your voltage regulator until it is fixed. Do not fly until you figure it out. Does the B&C have a built in regulator, if so it may need to be replaced. Talk to B&C and he will help you. On Aug 31, 2013, at 5:16 AM, ChangDriver wrote: > > Thanks for the reply. I have two brand new 12 v batteries in series to make the 24 v system. The current is RPM dependent. At idle there is no current. As RPM increases, the current rises. Like at 1200 rpm 4 amps, 1500, 12 amps, 2000, 22 amps, at t/o power of 2400 rpm 35 amps. > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=407808#407808 > > > > > > > > > > > ------------------------------------------------------------------------------------- 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.