---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Sat 11/18/23: 8 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:35 AM - Re: Funny Story (Bobby Paulk) 2. 06:42 AM - Re: Re: Funny Story (ashleysc@broadstripe.net) 3. 06:52 AM - Re: Re: Funny Story (Charlie England) 4. 08:02 AM - Re: Power, signal, and Coax - How should they be bundled? (wsimpso1) 5. 08:22 AM - Re: Re: Power, signal, and Coax - How should they be bundled? (Werner Schneider) 6. 09:45 AM - Re: Re: Power, signal, and Coax - How should they be bundled? (Charlie England) 7. 11:21 AM - Re: Re: Power, signal, and Coax - How should they be bundled? (Matthew S. Whiting) 8. 01:40 PM - Re: Re: Power, signal, and Coax - How should they be bundled? (Charlie England) ________________________________ Message 1 _____________________________________ Time: 06:35:57 AM PST US From: Bobby Paulk Subject: AeroElectric-List: Re: Funny Story Since y'all are discussing interference I'll tell you a funny story. ( not funny at the time ). We were building two all metal kit planes in my friends hangar. The rudder cables were galvanized steel. They were rolled up and put on a shelf but someone relocated them to the top of a DC welding machine where they stayed for months while the build went on. When we finally took my plane out to calibrate the compass it would spin like crazy with just a touch on the rudder pedals. I had located the remote compass on the bottom skin far aft right between the rudder cables. We tried de-gauzing to no avail. Finally relocated the compass to highest point behind the baggage compartment. It turned out to be very accurate. Bobby ________________________________ Message 2 _____________________________________ Time: 06:42:09 AM PST US From: ashleysc@broadstripe.net Subject: Re: AeroElectric-List: Re: Funny Story Hi Bobby; Hi All; Yes, position of the compass is all important, whether or not you have galvanized steel control cables. However, I would recommend stainless steel cables instead. I have seen many older aircraft, many of them certified aircraft, with rusted control cables. Cheers! Stu. ----- Original Message ----- From: "Bobby Paulk" Sent: Saturday, November 18, 2023 6:35:19 AM Subject: AeroElectric-List: Re: Funny Story Since y'all are discussing interference I'll tell you a funny story. ( not funny at the time ). We were building two all metal kit planes in my friends hangar. The rudder cables were galvanized steel. They were rolled up and put on a shelf but someone relocated them to the top of a DC welding machine where they stayed for months while the build went on. When we finally took my plane out to calibrate the compass it would spin like crazy with just a touch on the rudder pedals. I had located the remote compass on the bottom skin far aft right between the rudder cables. We tried de-gauzing to no avail. Finally relocated the compass to highest point behind the baggage compartment. It turned out to be very accurate. Bobby ________________________________ Message 3 _____________________________________ Time: 06:52:29 AM PST US From: Charlie England Subject: Re: AeroElectric-List: Re: Funny Story Not all stainless is non-magnetic, so that might not cure the interference issue. I hear you on the corrosion issue though. On Sat, Nov 18, 2023 at 8:44=AFAM wrote: > > Hi Bobby; > Hi All; > Yes, position of the compass is all important, whether or not you have > galvanized steel control cables. > However, I would recommend stainless steel cables instead. I have seen > many older aircraft, many of them certified aircraft, with rusted control > cables. > Cheers! Stu. > > ----- Original Message ----- > From: "Bobby Paulk" > To: aeroelectric-list@matronics.com > Sent: Saturday, November 18, 2023 6:35:19 AM > Subject: AeroElectric-List: Re: Funny Story > > bobbypaulk@comcast.net> > > Since y'all are discussing interference I'll tell you a funny story. ( no t > funny at the time ). > We were building two all metal kit planes in my friends hangar. The rudde r > cables were galvanized steel. They were rolled up and put on a shelf but > someone relocated them to the top of a DC welding machine where they stay ed > for months while the build went on. When we finally took my plane out to > calibrate the compass it would spin like crazy with just a touch on the > rudder pedals. I had located the remote compass on the bottom skin far af t > right between the rudder cables. We tried de-gauzing to no avail. Finally > relocated the compass to highest point behind the baggage compartment. It > turned out to be very accurate. > > Bobby =========== =========== =========== =========== =========== > > ________________________________ Message 4 _____________________________________ Time: 08:02:12 AM PST US Subject: AeroElectric-List: Re: Power, signal, and Coax - How should they be bundled? From: "wsimpso1" Charlie, Not Menzimer, using Actuonix P-16P for elevators, P-16L for rudder and aileron. As light as MAC, fits in my stabilizers, less expensive, rated for dust and condensation, right speed, and enough back drive resistance to hold settings. I get the off-axis pushrod loads off the servo with a little bellcrank, and put adjustable limit switches on the bellcrank after I know where the limits should be. Using the P version for elevators for position data - calcs say I may need to fly two trim tab. Flight test will let me know if I can omit the motor and lock that side, then fly the other or if I have to run them both. Thanks for the feedback on cable. After searching I just bought separate wires in same color scheme and will twist them into sets. Stein had not popped in my search, but I just looked at their site and there it is. Billski Read this topic online here: http://forums.matronics.com/viewtopic.php?p=512404#512404 ________________________________ Message 5 _____________________________________ Time: 08:22:00 AM PST US Subject: Re: AeroElectric-List: Re: Power, signal, and Coax - How should they be bundled? From: Werner Schneider Billski, which gear ratio did you use and for what plane type? Cheers Werner On 18.11.2023 17:01, wsimpso1 wrote: > > Charlie, > > Not Menzimer, using Actuonix P-16P for elevators, P-16L for rudder and aileron. As light as MAC, fits in my stabilizers, less expensive, rated for dust and condensation, right speed, and enough back drive resistance to hold settings. I get the off-axis pushrod loads off the servo with a little bellcrank, and put adjustable limit switches on the bellcrank after I know where the limits should be. Using the P version for elevators for position data - calcs say I may need to fly two trim tab. Flight test will let me know if I can omit the motor and lock that side, then fly the other or if I have to run them both. > > Thanks for the feedback on cable. After searching I just bought separate wires in same color scheme and will twist them into sets. Stein had not popped in my search, but I just looked at their site and there it is. > > Billski > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=512404#512404 > > ________________________________ Message 6 _____________________________________ Time: 09:45:58 AM PST US From: Charlie England Subject: Re: AeroElectric-List: Re: Power, signal, and Coax - How should they be bundled? Looks good. I suspect that the same point that I was trying to make would still apply; There's no worry about running power & signal in the same bundle. On Sat, Nov 18, 2023 at 10:04=AFAM wsimpso1 wr ote: > > > Charlie, > > Not Menzimer, using Actuonix P-16P for elevators, P-16L for rudder and > aileron. As light as MAC, fits in my stabilizers, less expensive, rated f or > dust and condensation, right speed, and enough back drive resistance to > hold settings. I get the off-axis pushrod loads off the servo with a litt le > bellcrank, and put adjustable limit switches on the bellcrank after I kno w > where the limits should be. Using the P version for elevators for positio n > data - calcs say I may need to fly two trim tab. Flight test will let me > know if I can omit the motor and lock that side, then fly the other or if I > have to run them both. > > Thanks for the feedback on cable. After searching I just bought separate > wires in same color scheme and will twist them into sets. Stein had not > popped in my search, but I just looked at their site and there it is. > > Billski > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=512404#51240 > > ________________________________ Message 7 _____________________________________ Time: 11:21:01 AM PST US From: "Matthew S. Whiting" Subject: Re: AeroElectric-List: Re: Power, signal, and Coax - How should they be bundled? --- MIME Errors - No Plain-Text Section Found --- A message with no text/plain MIME section was received. The entire body of the message was removed. Please resend the email using Plain Text formatting. HOTMAIL is notorious for only including an HTML section in their client's default configuration. If you're using HOTMAIL, please see your email application's settings and switch to a default mail option that uses "Plain Text". --- MIME Errors No Plain-Text Section Found --- ________________________________ Message 8 _____________________________________ Time: 01:40:12 PM PST US Subject: Re: AeroElectric-List: Re: Power, signal, and Coax - How should they be bundled? From: Charlie England Thanks for generalizing on my specific point about running power & signals down separate sides of the fuselage for a trim servo. ;-) On 11/18/2023 1:19 PM, Matthew S. Whiting wrote: > The answer is: it depends. For most power (>12 V, low current <10A) > and most signal (>1 V, slow transition ms to s) lines, it wont > matter much. However, add in higher currents >>10A, lower voltage <1 > mV, fast transition (ns) and things get dicier. Now, there arent > many such signals in a light airplane, but some items to pay attention > to are magnetometers, GPS antennas, cables and connections, CANbus, > and higher speed switching devices like strobes and such. Even audio > related devices and cables can be bothered as these often operate at > mV signal levels. > > My philosophy is to do the things at the outset that are fairly easy > to do. I generally use twisted pair wires for power and return to > each device unless using the airframe as the return. You can easily > twist your own with a drill or buy premade twisted pair wire at a very > small cost premium. And the twisted wires tend to be easy to tie into > a bundle. > > I separate higher current and fast switching wires from signal wires > such as communication (CANbus, Ethernet, RS232, ARINC 429, etc.), coax > antenna, etc. > > These two simple practices, combined with proper single point > grounding, will eliminate 99% of possible issues with almost zero > additional effort and cost. > > > Sent from my iPad > >> On Nov 18, 2023, at 12:47PM, Charlie England >> wrote: >> >> >> Looks good. I suspect that the same point that I was trying to make >> would still apply; There's no worry about running power & signal in >> the same bundle. >> >> On Sat, Nov 18, 2023 at 10:04AM wsimpso1 wrote: >> >> >> >> Charlie, >> >> Not Menzimer, using Actuonix P-16P for elevators, P-16L for >> rudder and aileron. As light as MAC, fits in my stabilizers, less >> expensive, rated for dust and condensation, right speed, and >> enough back drive resistance to hold settings. I get the off-axis >> pushrod loads off the servo with a little bellcrank, and put >> adjustable limit switches on the bellcrank after I know where the >> limits should be. Using the P version for elevators for position >> data - calcs say I may need to fly two trim tab. Flight test will >> let me know if I can omit the motor and lock that side, then fly >> the other or if I have to run them both. >> >> Thanks for the feedback on cable. After searching I just bought >> separate wires in same color scheme and will twist them into >> sets. Stein had not popped in my search, but I just looked at >> their site and there it is. >> >> Billski >> >> >> >> >> Read this topic online here: >> >> http://forums.matronics.com/viewtopic.php?p=512404#51240 >> >> -- This email has been checked for viruses by Avast antivirus software. www.avast.com ------------------------------------------------------------------------------------- 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.