---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Tue 05/09/17: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:50 AM - Re: Z-17 and over voltage warning lamp (Robert L. Nuckolls, III) 2. 01:58 PM - Re: Re: Today's trivia dump . . . (rayj) 3. 02:50 PM - Re: Today's trivia dump . . . (Eric Page) 4. 06:59 PM - Powering up new panel in my RV9a (Neil Rosoff) ________________________________ Message 1 _____________________________________ Time: 06:50:12 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Z-17 and over voltage warning lamp At 07:38 PM 5/8/2017, you wrote: >Thanks Bob. Thinking this through some more- since I have an engine >monitor with alarms and setable limits, I could simply have an alarm >trigger when voltage drops below a certain point, say 14 volts, >indicating an alternator out and battery only operations. A check of >the alt circuit breaker could diagnose if the condition was caused >by a crowbar trip or some other failure... although in flight it >makes little difference since your on battery power either way. > >Is there any real advantage to having a dedicated OV trip warning >light? I can't seem to find any. As long as you have ACTIVE notification of some type, the design goal is met. Most span-can drivers don't know their alternator is off line until stuff on the panel starts going dark. You need to know . . . and implement plan-B within mere minutes . . . there are lots of ways to make that happen. Bob . . . ________________________________ Message 2 _____________________________________ Time: 01:58:28 PM PST US Subject: Re: AeroElectric-List: Re: Today's trivia dump . . . From: rayj I guess I missed this thread earlier. Which Chinese battery welders were you comparing to. Are there any you can recommend? Raymond Julian Kettle River, MN The things we admire in men, kindness and generosity, openness, honesty, understanding and feeling are the concomitants of failure in our system. And those traits we detest, sharpness, greed, acquisitiveness, meanness, egotism and self-interest are the traits of success. And while men admire the quality of the first they love the produce of the second. -John Steinbeck, novelist, Nobel laureate (1902-1968) On 05/07/2017 01:03 PM, Robert L. Nuckolls, III wrote: > At 12:12 PM 5/7/2017, you wrote: >> >> Just to close the loop on this thread... >> >> We exchanged a few posts a couple of weeks ago about the feasibility >> of making a DIY spot welder for attaching battery tabs. I've been >> fiddling with the idea since then and have come to the conclusion that >> there's little point in trying to beat the Chinese at their own game. > > i CA > > > Bob . . . > ________________________________ Message 3 _____________________________________ Time: 02:50:52 PM PST US Subject: AeroElectric-List: Re: Today's trivia dump . . . From: "Eric Page" raymondj(at)frontiernet.n wrote: > I guess I missed this thread earlier. Which Chinese battery welders were you comparing to. Are there any you can recommend? > > Raymond Julian > Kettle River, MN Bob mentioned finding this... http://tinyurl.com/knl5wrf ...spot welder on eBay, but I don't think he has yet purchased one. Annoyingly, I think the price has gone up a bit since he first posted the link... Eric Read this topic online here: http://forums.matronics.com/viewtopic.php?p=469175#469175 ________________________________ Message 4 _____________________________________ Time: 06:59:01 PM PST US From: "Neil Rosoff" Subject: AeroElectric-List: Powering up new panel in my RV9a Stein Air built me a very nice Garmin G3X panel for my RV9. I am in the process of installing it. My preference is to incrementally test and verify the various circuits as I connect them. I have installed a battery box for an Odyssey PC680. It will be several months before I complete the installation, and would prefer to use a fresh one for final check out, engine starting, and flight testing. While the plane is on the ground during testing I was thinking of using a regular 12v auto battery with battery minder attached to it. Bob - do you see any potential issues with this? 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