Wednesday August 15th, 2007|
More Flying; E-buss Voltage Squawk
Ok, crummy cell phone picture, I know...but it's the only one I really have available to post. This is my new hangar at LZU. It's fantastic compared to the other place over at WDR. The nice thing about is it's half the drive, but is waaay more private than the community hangar there. Yes, that's a SU26 on the right and not so obvious is an Extra 300 tucked in behind my plane. Yes, very nice indeed.
Anyway, on to maintenance and squawks -- I thought I was having an issue with my alternator because I was showing too few volts. Then I had an idea -- why not just enable the volt display on the Dynon EFIS and see what it says. Well, it says 12.5 on the ground! Hmm....interesting.
If I enable my e-buss the volts on the Dynon EMS jumps up to 12.1. So I decided to go and fly to see how well it worked. I buzzed up to 19A to get some gas. The whole way the Dynon EFIS was showing 14.1 volts and the EMS was displaying 13.8. I flew around for another hour with no changes in voltage. I have the EFIS on the main buss and the EMS on the e-buss. I think this indicates a problem with my e-buss wiring -- in particular I think it's probably my big e-buss diode. Gotta check all that out.