---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Thu 06/20/19: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:55 PM - Re: Factory Certified but is this safe? (Robert L. Nuckolls, III) 2. 08:04 PM - Re: CFI techniques for glass panel pilots (speedy11@aol.com) 3. 08:43 PM - Re: Antenna Ground Plane (Robert L. Nuckolls, III) 4. 10:09 PM - Re: Antenna Ground Plane () ________________________________ Message 1 _____________________________________ Time: 05:55:57 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Factory Certified but is this safe? At 08:16 PM 6/18/2019, you wrote: >Hi all, > > >I am rebuilding and restoring a 1977 factory certified S1-S >Pitts. The electrical system is pretty basic but there is one >aspect that I am trying to understand. The battery is located >behind the pilot's seat. There is a contactor directly adjacent >that energizes the starter. There is a large wire, #8 or so, that >goes from the battery that goes down the frame to the console >between the pilot's legs where the circuit breakers and switches >reside. That wire goes into an ammeter and from there to the main >bus, on which the various circuit breakers reside. There is no >fuse, contactor or other circuit interruption device between the >battery and the console. If that main feed wire were to erode >through or otherwise short, there would be nothing to stop the >welding action until the battery died. > >I wired my RV8 per the excellent instructions in the Aeroelectric >Connection. I feel quite safe about it. There is a very short run >between the batter and the main contactor but all other wires are >protected. Not so with the factory Pitts wiring. Should I be >adding a fuse or contactor or something near the battery to protect >this circuit? Do you have a schematic of the system? How big is the alternator/generator? I am surprised that a type certificated airplane would be configured as you've described because it does not comply with Part 23 rules for crew management of power sources. You could add a battery contactor for just that feeder . . .but if you're going to add ANY contactor, why not wire per 99.9% of other TC aircraft? Add a legacy battery contactor upstream of the starter contactor then move the 8AWG feeder to the junction between those contactors. Of course, you'll need to add a battery master to the panel. What's your situation with respect to 'mods'? Do you need to execute a Form 337 Field Approval? Bob . . . ________________________________ Message 2 _____________________________________ Time: 08:04:22 PM PST US From: speedy11@aol.com Subject: AeroElectric-List: Re: CFI techniques for glass panel pilots Andy, Good on ya!!=C2- That is exactly the training our current crop of glass-t rained pilots need.I salute you. On the 737 Max issue, I am a retired 737 pilot (never flew the Max - but th en most 73 pilots have not flown it) and there is recent concern that femal e pilots will not have the upper body strength to turn the manual trim cran k - on any version.=C2- I often wondered about that very issue since I fo und turning it to be a challenge.=C2- I'm not sure what the solution will be except to restrict the jets to a maximum of one female in the cockpit s o there a male to spin the trim.There is a LOT of bogus "info" being circul ated so read anything so related with skepticism. Stan Sutterfield Time: 07:42:14 AM PST US From: "Andy Elliott" Subject: AeroElectric-List: CFI techniques for glass panel pilots I am an ex-military IP and civilian CFI for just over 40 years. (Ancient.) These days I mainly do flight reviews and WINGS instruction in experimentals with experienced pilots.=C2- It is true that part of the experimental community is especially enamored of glass panels and I have seen many panels with *no* back-up instruments. One technique I find especially good is to have the pilot remove/disable th e moving map display(s) and turn off his tablet, then go to a local airport he has been to many times.=C2- The pilot has to look a t the map ahead of time and pick out some visible landmarks, and find them in flight. Just like 40 years ago!=C2- Autopilot is allowed (Makes for much better traffic scanning), but only in the heading mode.=C2- No course tracking. Using this technique is especially interesting at night, where the advantag e of lit-up towns and highways outside of cities is counterbalanced by the difficulty in finding things (like runways) in the d ense sea of lights in modern cities.=C2- The sighting differences associated with altitude can be extreme, both favorably and un- .. Pilots are apprehensive to start, but quickly regain basic flying/navigatin g skills, and invariably "find" all kinds of things enroute that they've been flying over for years and never seen!=C2- Every single pilot I've done this with has thought it a valuable training experience.=C2- FWIW, Andy Elliott ________________________________ Message 3 _____________________________________ Time: 08:43:35 PM PST US From: "Robert L. Nuckolls, III" Subject: RE: AeroElectric-List: Antenna Ground Plane At 10:25 AM 6/6/2019, you wrote: >Thank you very much, I look forward to seeing your test results > >Keep well > >Mike > Mike, if you mounted a Jim Weir ELT antenna on the side of your fuselage, how long would the coax need to be to run from the antenna apex junction to your ELT? Bob . . . ________________________________ Message 4 _____________________________________ Time: 10:09:50 PM PST US From: Subject: RE: AeroElectric-List: Antenna Ground Plane Thanks for your help Bob Shortest run possible is 1 foot and I can put antenna 5 to 6 ft away on other side of fuselage and run antenna for +/- 8 ft max from current ELT mount. I can reposition the ELT elsewhere in the fuselage but I imagine one does not want then too far apart Hope this helps I will be away for 5 days so will not be able to respond Thanks Mike From: owner-aeroelectric-list-server@matronics.com On Behalf Of Robert L. Nuckolls, III Sent: June 20, 2019 6:14 PM Subject: RE: AeroElectric-List: Antenna Ground Plane At 10:25 AM 6/6/2019, you wrote: Thank you very much, I look forward to seeing your test results Keep well Mike Mike, if you mounted a Jim Weir ELT antenna on the side of your fuselage, how long would the coax need to be to run from the antenna apex junction to your ELT? 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