Hi George, The current drain you recorded is okay if that is a spiked voltage reading you saw. But I think you're real problem has to do with two things: One is the age of the battery pack, which is unknown but could be as old as the plane, and the second being your discharge test.
If the pack is as old as the plane, then the pack may not be able to deliver the power demanded of it by the radio system like it used to deliver. With age, the pack increases internal impedence, meaning it no longer provides current on demand as when it was new. So, when the aircraft demanded flaps down, this could have been enough demand to cause a temporary draw down on the pack, to the point where the voltage fell below operating limits for the radio. The result is a system shutdown. This shutdown may only last a fraction of a second, but depending on the receiver, could cause the receiver to think it was being powered up and go through a re-cycle. For example, the older Berg receivers would take as much as 2-seconds to come on-line from being powered up before you could operate the servos. Older analog receivers had no start up time, but newer microprocessor controlled receivers do take time. Maybe enough to cause the nose to drop without enough time to recover. As for the discharge test, this is a bench test that is done at a steady given rate...possibly at like 200-mA constant drain. Sure, you got over 800-mA capacity on the test, but this test does not replicate real world settings. During flight, the load imposed on the battery varies from almost nothing while you cruise across the sky and not touch the controls, to a heavy load of over an amp when you call for full CROW. If any of the servos are digital, the load is even higher, and if there is high demand that cannot be met by the battery pack, the microprocessor inside the digital servo could shut down. My Hitec digitals require about 1.5 seconds to wake up, and my JR digitals take a little less time. That's enough time to hit the ground if you were anywher close to the deck. Bottom line...I think you need a new battery pack (and maybe a new plane now that this happened). I change mine every year! mlee8249 -- mlee8249 ------------------------------------------------------------------------ mlee8249's Profile: http://www.rcgroups.com/forums/member.php?action=getinfo&userid=50215 View this thread: http://www.rcgroups.com/forums/showthread.php?threadid=317646 RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format
