---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Tue 10/14/14: 8 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:54 AM - Re: Welding cable ring connectors (John Morgensen) 2. 07:48 AM - Re: Re: Lee KR-2 System Architecture (Richard Girard) 3. 07:53 AM - Re: Re: Lee KR-2 System Architecture (Robert L. Nuckolls, III) 4. 11:21 AM - Re: Welding cable ring connectors (rayj) 5. 02:06 PM - Re: Should a tripped circuit breaker be reset in flight? (mmayfield) 6. 03:00 PM - Re: Re: Should a tripped circuit breaker be reset in flight? (Jeff Luckey) 7. 04:24 PM - =?utf-8?Q?Re:__Re:_Should_a_tripped_circuit_breaker_be_?= =?utf-8?Q?reset_in_flight=3F? () 8. 04:49 PM - Re: Re: Should a tripped circuit breaker be reset in flight? (Robert L. Nuckolls, III) ________________________________ Message 1 _____________________________________ Time: 04:54:24 AM PST US From: John Morgensen Subject: Re: AeroElectric-List: Welding cable ring connectors Thanks! On 10/13/2014 7:34 PM, Robert L. Nuckolls, III wrote: > > > At 21:27 2014-10-13, you wrote: >> >> >> I just acquired some #4 welding wire to fashion ground cables and >> looking at the available connectors the #6 connectors seem to fit >> with little or no slack. Am I missing something? Can I use the #6 >> connectors with #4 cable? > > Seems that connector sizing is a lot like shoe and > dress sizing . . . that is . . . in the ballpark. > Go by what fits best, not necessarily what's printed > on the box. > > > Bob . . . > > ________________________________ Message 2 _____________________________________ Time: 07:48:47 AM PST US Subject: Re: AeroElectric-List: Re: Lee KR-2 System Architecture From: Richard Girard Bob, If you know Bob Lee's username on the Matronics Aeroelectric Connection forum you could do a search and find all his posts. That would be one way to garner information about your new project. Congratulations and be sure to buy the latest revision of Bob N's book. It will become your best source of information as you craft the electrical architecture of your KR. Good luck and happy building. Rick Girard do not archive On Mon, Oct 13, 2014 at 8:09 PM, stickid wrote: > > I have just bought Bob Lee's Kr2 project and am trying to gather any info > that may pertain to the project. Do you have nay more posts or information > about the electronics he used? > Thanks > Bob R > Winnipeg Canada > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=431818#431818 > > -- Believe those who are seeking the truth, doubt those who find it. -Andre Gide ________________________________ Message 3 _____________________________________ Time: 07:53:09 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Re: Lee KR-2 System Architecture At 20:09 2014-10-13, you wrote: > >I have just bought Bob Lee's Kr2 project and am trying to gather any >info that may pertain to the project. Do you have nay more posts or >information about the electronics he used? When you say project . . . what stage of completion? Are any of the electrical system appliances operable either airborne or on the ground? I don't recall any conversations with Mr. Lee here on the List. Depending on how many 'hard' decisions are already in place, you might be well advices to pull out all the 'fuzzy' stuff and start over. Is this your first project or do you have some lessons-learned to draw on? Bob . . . ________________________________ Message 4 _____________________________________ Time: 11:21:50 AM PST US From: rayj Subject: Re: AeroElectric-List: Welding cable ring connectors Buy a lot of dresses, do you???? :>) (Sorry, I just COULDN'T pass it up) do not archive 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 10/13/2014 09:34 PM, Robert L. Nuckolls, III wrote: > > > At 21:27 2014-10-13, you wrote: >> >> >> I just acquired some #4 welding wire to fashion ground cables and >> looking at the available connectors the #6 connectors seem to fit with >> little or no slack. Am I missing something? Can I use the #6 >> connectors with #4 cable? > > Seems that connector sizing is a lot like shoe and > dress sizing . . . that is . . . in the ballpark. > Go by what fits best, not necessarily what's printed > on the box. > > > Bob . . . > > ________________________________ Message 5 _____________________________________ Time: 02:06:07 PM PST US Subject: AeroElectric-List: Re: Should a tripped circuit breaker be reset in flight? From: "mmayfield" Same in our airline. There are good reasons for not resetting tripped breakers, eg., causing the production of smoke when before there was none. FWIW in the never-ending "fuses versus breakers" debate, my design goals were: 1. The circuit protection shall be checked during preflight (a principle beaten into me during both military flying and airline training), and so tripped circuit protection devices must be easy to distinguish on the ground, and must be investigated before getting airborne. 2. In the air, tripped circuit protection shall be easily identifiable but not be reset/replaced unless I have a damn good reason for it. 3. In the air, circuit protection shall be easily reachable by system, such that if things produce unauthorised smoke , corresponding circuit protection can be manually tripped (as a backup to actually switching the system off). I achieved these goals, slightly more easily IMHO, by using CBs rather than fuses although with the advent of illuminated fuses there's probably no reason why they couldn't achieve them too. I do actually know of a couple of instances when I was in the military where boxes produced smoke airborne and CBs had to be pulled. -------- Mike Read this topic online here: http://forums.matronics.com/viewtopic.php?p=431871#431871 ________________________________ Message 6 _____________________________________ Time: 03:00:52 PM PST US From: Jeff Luckey Subject: Re: AeroElectric-List: Re: Should a tripped circuit breaker be reset in flight? Mike, All excellent points and it's good to hear from people who've had exposure to different organizations. I'm not an airline pilot & never served in the military. I would like to clarify one point. In this and other posts, people have referred to fuse panels which have "fuse blown" indicators in the form of red LEDs mounted next to the fuse. I think these are really neat! But, keep in mind that the LED is only lit when the fuse is blown AND the device on the other end is turned-on or at least capable of conducting a few milli-amps to ground. This means that if the circuit w/ the blown fuse is turned-off, the LED will not light and the blown fuse may go unnoticed. An example will help illustrate. Let's say that while taxing back to your hangar one night, the landing light fuse blows. No big deal - you're on the ground & home - you'll fix it next weekend. Then, next weekend you get out to the plane and you forget about the inop landing light. The "fuse blown" LED will not light up when you power-up the buss because there is no path to ground for the LED. This is really not a big deal, however, if that had been a breaker instead of a fuse, the breaker would still be 'popped' and sticking up when you got back to the plane. The point being that a popped circuit breaker can be a conspicuous reminder of a problem. The argument could be made that a popped breaker is easier to detect than a blown fuse as Mike points out. -Jeff On Tuesday, October 14, 2014 2:17 PM, mmayfield wrote: Same in our airline. There are good reasons for not resetting tripped breakers, eg., causing the production of smoke when before there was none. FWIW in the never-ending "fuses versus breakers" debate, my design goals were: 1. The circuit protection shall be checked during preflight (a principle beaten into me during both military flying and airline training), and so tripped circuit protection devices must be easy to distinguish on the ground, and must be investigated before getting airborne. 2. In the air, tripped circuit protection shall be easily identifiable but not be reset/replaced unless I have a damn good reason for it. 3. In the air, circuit protection shall be easily reachable by system, such that if things produce unauthorised smoke , corresponding circuit protection can be manually tripped (as a backup to actually switching the system off). I achieved these goals, slightly more easily IMHO, by using CBs rather than fuses although with the advent of illuminated fuses there's probably no reason why they couldn't achieve them too. I do actually know of a couple of instances when I was in the military where boxes produced smoke airborne and CBs had to be pulled. -------- Mike Read this topic online here: http://forums.matronics.com/viewtopic.php?p=431871#431871 ________________________________ Message 7 _____________________________________ Time: 04:24:17 PM PST US From: Subject: =?utf-8?Q?Re:_AeroElectric-List:_Re:_Should_a_tripped_circuit_breaker_be_?= =?utf-8?Q?reset_in_flight=3F? 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Nuckolls, III" Subject: Re: AeroElectric-List: Re: Should a tripped circuit breaker be reset in flight? >The argument could be made that a popped breaker is easier to detect >than a blown fuse as Mike points out. Given that there are 100x more ways a thing can fail that DOESN'T pop a fuse, it seems that the whole argument over the utility of visible notification is moot. If it's important that piece of equipment work before flight . . . then exercise the critter in preflight. If not working, then indeed a fuse MIGHT be open but it's more likely that it is not. Visual inspection any circuit protective device offers no assurance whatsoever of any system's operational integrity. Bob . . . ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message aeroelectric-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/AeroElectric-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/aeroelectric-list Browse Digests http://www.matronics.com/digest/aeroelectric-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.