On 10/15/2015 6:49 PM, Mike Stirewalt via KRnet wrote: > I'm taking > measures, with my battery installation, to make sure as best I can that > there will be nothing to interfere with me using lots of electrics to > land, taxi to the fuel dowser, fill up, get back in the plane, start the > engine and continue my journey.
I don't see how this differs from my installation. I've calculated that I have in excess of 3 hours of battery life between my two batteries if the alternator dies. Presuming I accidentally leave the master on after taxiing in from landing, that is a long time to fill up the plane before getting back in to start it, and that's assuming I'm going to miss the nav lights and landing light being on, and the strobes flashing at me the entire time, along with a bright yellow light flashing on the panel. If, for some reason all that does happen, the plane can either be hand propped or jumped from an external power source if it is an emergency to leave asap. > Dj said, > >> "There is simply no need to have TWO heavy "substantial" batteries in > the > airplane." > > That's probably true. It can't hurt though. It's probably highly > unnecessary unless you're stationed in Antarctica or flying in the far > north. I consider it a lot of unnecessary weight, however, the beauty of experimental aircraft is that everyone gets to determine their own priorities. I'm not dissing you for having two large batteries in your aircraft. I *AM* dissing you for making fun of Larry and I for having one large battery and a second small one. I've done a complete electrical load analysis on my aircraft and know how much juice is being used if everything is on, and how much if only the items on the E-bus are on. I have plenty of excess power available without having that second large heavy battery onboard. One large battery is plenty. Lithium does throw a new thing out there to consider. In my personal opinion, the tech isn't mature enough for me to use in my aircraft, given some of the bad accidents we've seen. Time will tell if this will change, or the next best thing will come along and be even better. I do know that some people are using them, and I admire them for leading the way. -Dj -- Dj Merrill - N1JOV - EAA Chapter 87 Sportsman 2+2 Builder #7118 N421DJ - http://deej.net/sportsman/ Glastar Flyer N866RH - http://deej.net/glastar/
