---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Tue 07/17/07: 12 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 02:36 AM - Re: best contactor reliability -- mechanical, solid,state, or manual? (D Wysong) 2. 05:19 AM - Re: KMD 150 Install manual needed (N395V) 3. 07:39 AM - Re: Flap switch (Eric M. Jones) 4. 08:21 AM - Re: Re: GTX327 power switching (Michel Creek) 5. 09:05 AM - Re: Figure z-19 (PSILeD@aol.com) 6. 09:51 AM - Re: Re: GTX327 power switching (Peter Pengilly) 7. 09:57 AM - Re: Low transmit volume on Valcom 760 (privatepilot03) 8. 11:26 AM - Re: Plane-Power (David E. Nelson) 9. 11:34 AM - Re: Figure z-19 (Ernest Christley) 10. 02:06 PM - Re: Re: Belly antenna (Merlin) 11. 02:11 PM - Re: Flap switch (Merlin) 12. 03:12 PM - Re: Flap switch (Dale Fultz) ________________________________ Message 1 _____________________________________ Time: 02:36:34 AM PST US From: D Wysong Subject: AeroElectric-List: Re: best contactor reliability -- mechanical, solid,state, or manual? The system is 25 ADC (worst case) at 28 VDC with a nominal load of about 17 ADC. The spec environment (vibe, temp) is similar to the Summer cockpit of my C150 with a prop that needs to be dynamically balanced. Worse than a lab bench but better than under the hood of a Hummer. All components are rated for -40 C to +85 C (operating) thus far. Unfortunately, there are no "non-critical" components in the system so ANY power loss is bad news. Again, I'm trying to weigh the pros/cons of mechanical, solid-state, or manual master battery contactors for this application. I considered using parallel contactors (as suggested here) to avoid the single point contactor failure but found myself staring down the slippery slope of increased parts count and complexity. Perhaps the "best" answer is a manual contactor with dual contacts (one of those big 1/2/Both switches). ??? Any guidance (including "shut up, quit worrying, and use the darn can!") will be appreciated. :-) D -------------------- >>> I have a remotely operated application where the loss of the master >>> battery contactor will result in the loss of data/money/time (... >>> and dignity!). My baseline design resembles a "Z" diagram (thanks >>> Bob!) and I planned to use a mechanical, continuous duty contactor >>> like the S-701 from B&C. However, a buddy of mine recently >>> experienced a contactor failure in flight and it caused me to >>> experience a few "What If!?" nightmares. I'm back to reconsidering >>> my original decision... > > Help us with a bit more information about your application. > What kind of vehicle? What kind of environment? What's the > energy requirement to maintain data in vulnerable systems. > It's often much easier to arrange for brownout and/or momentary > power loss for a few items than to back-up the whole system. > Finally, it's almost always better to have a plan-a/plan-b > modus operandi than to scratch around for "more reliable" > hardware. EVERYTHING will break at some point in time. > > Give us a rundown of your equipment that must stay awake > and what the power requirements are. > > Bob . . . ________________________________ Message 2 _____________________________________ Time: 05:19:10 AM PST US Subject: AeroElectric-List: Re: KMD 150 Install manual needed From: "N395V" -------- Milt 2003 F1 Rocket 2006 Radial Rocket Read this topic online here: http://forums.matronics.com/viewtopic.php?p=124315#124315 ________________________________ Message 3 _____________________________________ Time: 07:39:34 AM PST US Subject: AeroElectric-List: Re: Flap switch From: "Eric M. Jones" I think what you need is what I sell lots of--the True Servo Conversion for MAC/RACs. TSCMR. This is a teeny module that converts the external position signal that you get from a voltage divider potentiometer or even a bank of push buttons to control a MAC or RAC trim box. See: http://tinyurl.com/2qo222 These are the parts they left out of the trim box that would have made it a servo. This also solves the problem of how to connect all those tiny trim box wires. -------- Eric M. Jones www.PerihelionDesign.com 113 Brentwood Drive Southbridge, MA 01550 (508) 764-2072 emjones@charter.net Read this topic online here: http://forums.matronics.com/viewtopic.php?p=124343#124343 ________________________________ Message 4 _____________________________________ Time: 08:21:21 AM PST US From: "Michel Creek" Subject: RE: AeroElectric-List: Re: GTX327 power switching Found out my problem was low input power voltage below 10. With proper voltage, everything works fine. -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Michel Creek Sent: Monday, July 16, 2007 8:22 PM Subject: RE: AeroElectric-List: Re: GTX327 power switching I'm having the same problem as Sam as detailed in his email below. Does anyone have a solution to this? I've tried adjusting contrast/brightness with no affect. Thanks, Mike Creek -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of phd1993 Sent: Wednesday, November 15, 2006 7:59 PM Subject: AeroElectric-List: Re: GTX327 power switching I have been bench/panel testing my GTX327 during cable assembly prior to final installation in my panel and I can confirm the Pin 1 / Pin 15 configurations. Now my question - if I have power supplied via Pin 15 and ground on Pin 25 WITHOUT connecting either the transponder antenna or the altitude encoder what should the GTX327 display at power on? How about power on while holding down the FUNC button. All I am getting is the "backpanel" illuminated with no other display items. Is this proper? Or do I need to connect either the antenna, the altitude encoder, or both before I start seeing any items displayed on the panel? Feedback appreciated. Thanks, Sam H. Zenith 701 kit Read this topic online here: http://forums.matronics.com/viewtopic.php?p=74927#74927 ________________________________ Message 5 _____________________________________ Time: 09:05:44 AM PST US From: PSILeD@aol.com Subject: Re: AeroElectric-List: Figure z-19 Ernest, Attached is a dxf file of the original Z19. If you want the rear battery option let me know and I will send it to you. Paul LeDoux Sharpsburg, Ga. RV-8 in progress ************************************** Get a sneak peek of the all-new AOL at http://discover.aol.com/memed/aolcom30tour ________________________________ Message 6 _____________________________________ Time: 09:51:07 AM PST US From: "Peter Pengilly" Subject: RE: AeroElectric-List: Re: GTX327 power switching Guys, I made myself a 12v power supply for the garage/hangar from an old computer power supply to get over the problem of low voltage problems. Needs some internal surgery to install an on-off switch (5 mins on Google provided the answer as most power supplies now switch off on a signal from the mother board). Runs for ever, stabilized voltage (that I believe can be tweaked up to 13 or 14v, but I haven't found out how) and can deliver up to about 20A. Means that I don't have to charge a battery all the time and I can buy a fresh PC680 just before I'm ready to go flying. Peter RV-6A, DR-107 & RV-7 (building) -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Michel Creek Sent: 17 July 2007 16:14 Subject: RE: AeroElectric-List: Re: GTX327 power switching Found out my problem was low input power voltage below 10. With proper voltage, everything works fine. -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Michel Creek Sent: Monday, July 16, 2007 8:22 PM Subject: RE: AeroElectric-List: Re: GTX327 power switching I'm having the same problem as Sam as detailed in his email below. Does anyone have a solution to this? I've tried adjusting contrast/brightness with no affect. Thanks, Mike Creek -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of phd1993 Sent: Wednesday, November 15, 2006 7:59 PM Subject: AeroElectric-List: Re: GTX327 power switching I have been bench/panel testing my GTX327 during cable assembly prior to final installation in my panel and I can confirm the Pin 1 / Pin 15 configurations. Now my question - if I have power supplied via Pin 15 and ground on Pin 25 WITHOUT connecting either the transponder antenna or the altitude encoder what should the GTX327 display at power on? How about power on while holding down the FUNC button. All I am getting is the "backpanel" illuminated with no other display items. Is this proper? Or do I need to connect either the antenna, the altitude encoder, or both before I start seeing any items displayed on the panel? Feedback appreciated. Thanks, Sam H. Zenith 701 kit Read this topic online here: http://forums.matronics.com/viewtopic.php?p=74927#74927 ________________________________ Message 7 _____________________________________ Time: 09:57:25 AM PST US Subject: AeroElectric-List: Re: Low transmit volume on Valcom 760 From: "privatepilot03" I couldn't sign up to the forums with my avidflyerss screen name for some reason, so I created this one. Anyway, I tried adjusting the gains on both the radio and headset with little if any improvement. At this point, I'm leaving everything as is until I get the plane done and actually try it at the airport and in the air. Maybe it's fine, I don't know, but it sure seems quiet to me. Thanks Read this topic online here: http://forums.matronics.com/viewtopic.php?p=124381#124381 ________________________________ Message 8 _____________________________________ Time: 11:26:20 AM PST US From: "David E. Nelson" Subject: Re: AeroElectric-List: Plane-Power Hi Bob, Thank you for the followup and everything you do here on the list. Regards, /\/elson Do not archive On Sat, 14 Jul 2007, Robert L. Nuckolls, III wrote: > > > At 01:36 PM 7/12/2007 -0500, you wrote: > >> >> >> >> Hi Bob, >> >> I was just curious if you had had any time to explore any of Plane-Power's >> internally regulated alternators on that fancy alternator stand? >> >> Thanks, > > No. My duties with an ageing father in Medicine Lodge, putting > down new hardwood floors on my house and needs of my > new clients (out of town 4 days last week and 3 days next > week) have push my drive-stand project back into the corner. > > Actually, I have no particular plans to test Plane-Power's > products. They are wired exactly the same architecture > and alternator control philosophy that you would get if > if you did a B&C LR-3 installation on an externally > regulated alternator . . . or figure Z-11 from the book. > > I intend to explore the energy questions on alternators > in general with a goal of achieving positive on/off, any time, > any conditions control of an internally regulated alternator > that is NOT modified per the Plane Power manufacturing > philosophy. I.e. off the shelf automotive. > > I can deduce no reason to be skeptical of Plane Power's > product performance claims. > > Bob . . . > > -- ~~ ** ~~ Research has shown that Mondays account for 1/7th of your time ~~ ** ~~ ________________________________ Message 9 _____________________________________ Time: 11:34:53 AM PST US From: Ernest Christley Subject: Re: AeroElectric-List: Figure z-19 PSILeD@aol.com wrote: > Ernest, > > Attached is a dxf file of the original Z19. If you want the rear > battery option let me know and I will send it to you. > > Paul LeDoux > Sharpsburg, Ga. > RV-8 in progress > > > Get a sneak peek of the all-new AOL.com > . I'm good now (heh, just my opinion). I've been able to load the file into QCad and do some editing. I also found dwg2dxf. There was only an RPM, but I used alien to convert it to a deb file (Linux file installation formats). "dpkg -i" installed the deb without any other arguments. So I'm cooking with gas now. Thanks, guys. ________________________________ Message 10 ____________________________________ Time: 02:06:41 PM PST US From: "Merlin" Subject: RE: AeroElectric-List: Re: Belly antenna Thanks for your replies :-) Phil Do not archive -----Message d'origine----- De : owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] De la part de jetboy Envoy : lundi 16 juillet 2007 0:31 : aeroelectric-list@matronics.com Objet : AeroElectric-List: Re: Belly antenna Bent or sloping whip makes virtually no difference. The ground plane is still flat, the magnetic component of the radiated field is caused by current flow, most of which occurs in the first third of the whip, so this portion is the area to leave straight. Ralph -------- Ralph - CH701 / 2200a Read this topic online here: http://forums.matronics.com/viewtopic.php?p=123983#123983 ________________________________ Message 11 ____________________________________ Time: 02:11:01 PM PST US From: "Merlin" Subject: RE: AeroElectric-List: Flap switch I'm going to use Aeroelectric suggestion :-) The problem is finding the switch. The type of the one received with the Van's kit is as hard to toggle as a contactor ! The genuine Cessna switch is awfully expensive !!! Philippe -----Message d'origine----- De : owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] De la part de Dale Fultz Envoy : lundi 16 juillet 2007 15:47 : aeroelectric-list@matronics.com Objet : AeroElectric-List: Flap switch --> Can a Cessna flap switch be used instead of the Ray Allan switch for a trim servo??? If so does someone have a wiring diagram?? Thanks Dale ----- ________________________________ Message 12 ____________________________________ Time: 03:12:48 PM PST US From: "Dale Fultz" Subject: Re: AeroElectric-List: Flap switch I have a genuine Cessna 150 switch. I just need to find out if it can be wired into the system instead of using the supplied switch from Ray Allen that was with the servo.. ----- Original Message ----- ------------------------------------------------------------------------------------- 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.