Bill; Either you are one of the most unlucky people in the world or one of the assumptions information you are working under is incorrect.
The first thing I would do is verify good grounds between the generator and the engine case, from the engine to the airframe (there should be a heavy braided jumper on one of the engine to mount bolts, usually the lower right), and from the regulator to the airframe. If you ground the generator case, field terminal and voltage meter negative lead together and test the voltage on the armature at 2200 rpm and still get less than about 15 volts, this indicates the generator is bad. Flash the field and test it again, just to be sure. If it fails after being flashed, I'd take the generator and regulator to an automotive electrical shop for testing. If they test good, look very closely at the airframe wiring. If not, have the generator shop identify the problem (and fix it if they will. Tell them it's off an old Allis Chalmers Tractor...) John Cooper Skyport Services www.skyportservices.net -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of bcflyer2003 Sent: Monday, June 08, 2009 11:00 AM To: [email protected] Subject: [ercoupe-tech] Generator failure I've owned my 415c for 1 1/2 years and 140+ hours. I have one recurring problem with failure of the charging system. The generator installed now is the third since I bought the plane as is also the voltage regulator. It did not work when I bought the plane which accounts for the first generator and regulator change. Delco Remey then replaced one generator when it failed again after 5 or 6 hours. When they got my returned generator, they informed John Cooper there was nothing wrong with it, but the new generator and regulator worked for about 100 hours and then started working intermittently. Symptoms were that it would not charge until about 10-15 minutes into a flight, then it would start charging again. On the last flight it never started charging. Wire continuity, checking for a grounded wire and checking the NEW master switch do not show any abnormalities. When the field terminal is grounded, and engine run up to 2200 rpm, there is less than 1.5 volts indicated on the armature. If anyone has any advice on why 3 sets of generator and regulators would fail in such a short time, please advise. Thank You. Bill Chalker N94191 ------------------------------------ Yahoo! Groups Links
