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Eliacim. I had a few cars with bad batteries. A lot of weird things happen in an electrical system with a bad battery. But in IMHO, the drainage of a bad battery would show on the ampere meter. I am convinced that your generator is in need of attendance. Before flashing the field, I'd recommend checking the brushes and their tension in the generator. It's easily done by removing the cover band and check visually or by hand. The commutator should be not burned and clean enough to allow the current to flow. Brushes that are too short, that stick or that have not enough spring tension can not produce enough current. They allow arcing and need immediate attention. If all looks good there, flashing the field seems a good idea to me. If that fails too, a replacement generator can be used to see whether the problem lies within the generator or the rest of the system. You can exchange battery, regulator (you did that already), alternator and wiring (by temporarily attaching external wires) to see what part of the system is causing the trouble. Good luck Hartmut ----- Original Message ----- From: <[EMAIL PROTECTED]> To: <[email protected]> Sent: Tuesday, October 25, 2005 9:16 PM Subject: [COUPERS-TECH] Another one with electrical problems... > ----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]---- > > > Another one with electrical problems... > > Patient: 1946 415C 75 HP > > Symptoms: > 1. Ammeter shows max charge current of slightly below + 5 amps at maximum > engine RPM, and next to nothing at less RPM. > 2. I never see the +11 amps charging current I should see for first 20 minutes > of flight. > 3. If I turn on the strobe during flight, the ammeter swings to like -5 amps > and leaves me with no battery to restart the plane after I have landed. > However, if I run the strobe, but then keep it off for the last 1/2 hour > before landing, the battery charges enough for me to be able to restart the > plane. > 4. Turning on the landing lights also sends the ammeter deep into the negative. > 5. The only electrical loads I can turn on during all the flight without > risking running down the battery are the COM radio and the Transponder. > > Unsuccessful attempts to fix the problem: > 1. Tested two different voltage regulators (one new) without success. > > Possibilities: > 1. Bad or marginal generator, in need of flashing in the best case, or > overhaul / replacement in the worst case. > 2. Bad or marginal battery. > 3. Bad amp meter. > 4. Bad strobe, draining too much current. > 5. A combination of the above. > > Any and all advice will be appreciated in troubleshooting this. > > Thanks > > Eliacim Cortes > N87071 > > > > ============================================================================ == > To leave this forum go to: http://ercoupers.com/lists.htm > Search the archives on http://escribe.com/aviation/coupers-tech/ > > > > ============================================================================== To leave this forum go to: http://ercoupers.com/lists.htm Search the archives on http://escribe.com/aviation/coupers-tech/
