blueflyer
Well Known Member
OK, this is admittedly not in my RV (wings still in the garage), but I can use this knowledge in the future to perform future maintenance on my RV. How is that for rationalization?! Anyway, here is my problem: I have a Dynon D-120.
When I start my plane, the amps fluctuate from the high end of normal to high voltage from say 13.0 to 15.5. At the same time, my amp meter will swing back and forth from 0 to 22 amps. I have my amp meter wired to show what the alternator is putting out. Both of these meters will settle out for a few minutes, but they always start acting up like this again within a few minutes.
When I perform a hot start (0-360), the amps will stay way up at 50-60, and sometimes peaking at 62-63.....I have a 60Amp alternator. It seems if I get the rpms up to about 1500 or so, the amps will trend down to a more normal level of about 6-8 amps. Also of note, the throttle cable gets really hot during hot starts. So much so, you cant hold it if you touch the silver part of the cable visible in the cockpit.
I have replaced the voltage regulator and added a 1.5" thick ground strap from engine to firewall. My battery is in the rear fuselage. All connections seem to be tight. After adding the new ground strap, I have not attempted a hot start. I still have to same problems after the new voltage regulator.
What else should I look for or try to replace/repair? Thanks in advance.
When I start my plane, the amps fluctuate from the high end of normal to high voltage from say 13.0 to 15.5. At the same time, my amp meter will swing back and forth from 0 to 22 amps. I have my amp meter wired to show what the alternator is putting out. Both of these meters will settle out for a few minutes, but they always start acting up like this again within a few minutes.
When I perform a hot start (0-360), the amps will stay way up at 50-60, and sometimes peaking at 62-63.....I have a 60Amp alternator. It seems if I get the rpms up to about 1500 or so, the amps will trend down to a more normal level of about 6-8 amps. Also of note, the throttle cable gets really hot during hot starts. So much so, you cant hold it if you touch the silver part of the cable visible in the cockpit.
I have replaced the voltage regulator and added a 1.5" thick ground strap from engine to firewall. My battery is in the rear fuselage. All connections seem to be tight. After adding the new ground strap, I have not attempted a hot start. I still have to same problems after the new voltage regulator.
What else should I look for or try to replace/repair? Thanks in advance.
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