---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Mon 06/14/10: 14 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 02:26 AM - Re: Re: Picture format for posting (Tony Babb) 2. 06:37 AM - Re: Rotax 914 internal generator (Robert L. Nuckolls, III) 3. 06:41 AM - Re: Re: labeling panel (Jim Wickert) 4. 10:12 AM - Re: Rotax 914 internal generator (rparigoris) 5. 11:20 AM - Re: Re: Rotax 914 internal generator (Robert L. Nuckolls, III) 6. 01:03 PM - ground power switch (woxofswa) 7. 01:03 PM - Re: IVO Electronic CB report (Dennis Glaeser) 8. 02:40 PM - Re: labeling panel (Geoff Heap) 9. 02:44 PM - Re: ground power switch (Robert L. Nuckolls, III) 10. 03:08 PM - Active Notification of Low Voltage (Gordon Smith) 11. 03:34 PM - Re: ground power switch (woxofswa) 12. 03:45 PM - Permanent Magnet Alternators or Dynamo (Gordon Smith) 13. 07:33 PM - Reverse Current - Life Is Indeed Harder When You're Stupid (Valovich, Paul) 14. 09:34 PM - Re: Re: labeling panel (Bill Bradburry) ________________________________ Message 1 _____________________________________ Time: 02:26:20 AM PST US From: "Tony Babb" Subject: RE: AeroElectric-List: Re: Picture format for posting This is odd. I use Internet Explorer 8, and used earlier versions which behaved in the same way. Whenever I open a large graphic, e.g. a jpg photo it opens showing me the top left corner of the photo but when it's finished downloading it automatically resizes the image to fit my window. Maybe there's a setting somewhere but I don't remember doing anything to get this behavior, it's just always done this on a variety of laptops and various versions of IE. Tony Babb Velocity SEFG 62% done, 78% to go www.alejandra.net/velocity -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of paul wilson Sent: Sunday, June 13, 2010 6:43 AM Subject: AeroElectric-List: Re: Picture format for posting Oversized pics are a constant issue and most people just delete them since it is so hard to view them. For PC users Microsoft has the tool for resizing a picture. Find the download on the right . http://www.microsoft.com/windowsxp/downloads/powertoys/xppowertoys.mspx To use the tool click on properties of the pic and choose small or medium and get an new file for posting. It would be nice if everyone used the tool. Regards, Paul ============== > > >At 06:55 AM 6/13/2010, you wrote: >> >>6/13/2010 >> >>PS: There is sort of a gotcha. I posted a jpg picture on the KIS >>list (see here I hope): >> >>http://forums.matronics.com/viewtopic.php?t=71560 >> >>and the picture posted just fine except that its layout on the >>forum was so huge such that one had to scroll all over the place to >>find the area of interest. > > This is something of a conundrum when posting pictures. > Even the most inexpensive of modern cameras are capable > of imaging and recording in great detail with some pictures > being as much as 3000 pixels wide. > > Bob . . . ________________________________ Message 2 _____________________________________ Time: 06:37:05 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Rotax 914 internal generator At 08:49 PM 6/13/2010, you wrote: Hi group I am using Eris Jones Linear Over-Voltage Protector to control my Rotax 914 internal generator through a 75 amp automotive relay. At moment I have relay on my schematic downstream of the Ducati regulator. If regulator fails and there is in fact a runaway over volt event, true the L OVP device will disconnect it from my electrical system, but the generator will still be outputting. Do you think I would be better off moving the relay that is controlled by the L OVP to be in series with one of the generators yellow output wires? That is a better place to "shut the system" down. See: http://www.aeroelectric.com/PPS/Adobe_Architecture_Pdfs/Z16M.pdf Bob . . . ________________________________ Message 3 _____________________________________ Time: 06:41:58 AM PST US From: "Jim Wickert" Subject: RE: AeroElectric-List: Re: labeling panel J0n, Here is another approach I have been looking at that has been used by some other builders and they have had great results. I have not done it but they say it works great. http://www.pulsarprofx.com/ There are some actual panel shots on this site. Let me know your comments. Take care happy building Jim Wickert Tel 920-467-0219 Cell 920-912-1014 -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of jonlaury Sent: Sunday, June 13, 2010 11:44 PM Subject: AeroElectric-List: Re: labeling panel Jim, I used the HiRes screens. I don't think there is a specific hi-res paint. The resolution is a function of the # of threads/inch in the warp and weft of the screen. John Read this topic online here: http://forums.matronics.com/viewtopic.php?p=301122#301122 ________________________________ Message 4 _____________________________________ Time: 10:12:26 AM PST US Subject: AeroElectric-List: Re: Rotax 914 internal generator From: "rparigoris" Hi Bob "That is a better place to "shut the system" down. See: http://www.aeroelectric.com/PPS/Adobe_Architecture_Pdfs/Z16M.pdf" OK I will place relay at yellow wire. How many AC volts, and how many AC amps should the contacts of the relay be rated to "break" at? Thx. again Ron Parigoris Read this topic online here: http://forums.matronics.com/viewtopic.php?p=301199#301199 ________________________________ Message 5 _____________________________________ Time: 11:20:29 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Re: Rotax 914 internal generator At 12:11 PM 6/14/2010, you wrote: > > >Hi Bob > >"That is a better place to "shut the system" down. >See: >http://www.aeroelectric.com/PPS/Adobe_Architecture_Pdfs/Z16M.pdf" > >OK I will place relay at yellow wire. > >How many AC volts, and how many AC amps should the contacts of the >relay be rated to "break" at? The relay you called out on the DC side of the rectifier/regulator will be fine. AC is MUCH easier on relays than is DC. Bob . . . ________________________________ Message 6 _____________________________________ Time: 01:03:24 PM PST US Subject: AeroElectric-List: ground power switch From: "woxofswa" Just to make sure I understand the science as I add a ground power plug to my RV-10 project. The panel switch to activate the ground power just needs to be a simple on/off switch that connects between the GP relay and aircraft ground and activates the relay by grounding it. Is that right, or am I off the reservation? Also, to power ship's power from a ground power source, do both the GP switch and the main master switch both have to be on? Thanks in advance. Please excuse my neophyte questions. -------- Myron Nelson Mesa, AZ Emp completed, QB wings completed, legacy build fuse in progress Read this topic online here: http://forums.matronics.com/viewtopic.php?p=301217#301217 ________________________________ Message 7 _____________________________________ Time: 01:03:31 PM PST US Subject: AeroElectric-List: Re: IVO Electronic CB report From: "Dennis Glaeser" Here are pictures of my IVO circuit. I soldered the parts to the 'wrong' side of the board so that I didn't have to worry about unintended connections on the back side. The board looked very nice before I had to chop it down to fit in the project box. I've also attached a PDF showing Bob's circuit design and the physical arrangement of parts and connections I developed. I should have gotten the project box up front, and I could have easily placed the components closer on the board. Oh well. Dennis Read this topic online here: http://forums.matronics.com/viewtopic.php?p=301219#301219 Attachments: http://forums.matronics.com//files/prop_circuit_layout_164.pdf http://forums.matronics.com//files/board_in_box_541.jpg http://forums.matronics.com//files/board_back_770.jpg ________________________________ Message 8 _____________________________________ Time: 02:40:07 PM PST US Subject: AeroElectric-List: Re: labeling panel From: "Geoff Heap" Bill Bradburry. Hey Bill. I'm in the market for panel marking. Can we get a pic of your panel? Thanks....Geoff Read this topic online here: http://forums.matronics.com/viewtopic.php?p=301222#301222 ________________________________ Message 9 _____________________________________ Time: 02:44:07 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: ground power switch At 02:57 PM 6/14/2010, you wrote: > >Just to make sure I understand the science as I add a ground power >plug to my RV-10 project. > >The panel switch to activate the ground power just needs to be a >simple on/off switch that connects between the GP relay and aircraft >ground and activates the relay by grounding it. Correct ONLY IF you do not plan to use crowbar OV protection lik4 pwge 4 of http://www.aeroelectric.com/articles/grndpwr.pdf If the ov protection is included, then the 'switch' must also be a circuit breaker. This can be a switch-breaker . . . or a simple push-pull, 5A breaker. If you don't have ov protection, then page 5 applies and a simple switch suffices. >Also, to power ship's power from a ground power source, do both the >GP switch and the main master switch both have to be on? If wired per the diagrams cited above, you can charge the ship's battery through ground power and leave the master off. But to crank the engine or run equipment for servicing on the ground, BOTH switches are ON. Bob . . . ________________________________ Message 10 ____________________________________ Time: 03:08:16 PM PST US From: "Gordon Smith" Subject: AeroElectric-List: Active Notification of Low Voltage Many current OBAM aircraft have electronic EFIS and/or EIS systems installed in their panels. Most of these systems have the capability to monitor various engine and electrical parameters. Limits can be programmed so that when a parameter is outside of the set limits, this is enunciated via audio and/or visual notification (a warning light). Is the use of these EFIS/EIS systems adequate for proper stand alone "Active Notification of Low Voltage"? Or is it recommended that additional equipment be employed? This additional equipment would be such as AEC9005, AEC9024 (when available), or other such devices on the market. Gordon Smith ________________________________ Message 11 ____________________________________ Time: 03:34:43 PM PST US Subject: AeroElectric-List: Re: ground power switch From: "woxofswa" Thanks, it is starting to make more sense now. I have been using your layout and do have the crowbar. What I wasn't going to bother with was the indicator light, but I am re-thinking that. -------- Myron Nelson Mesa, AZ Emp completed, QB wings completed, legacy build fuse in progress Read this topic online here: http://forums.matronics.com/viewtopic.php?p=301231#301231 ________________________________ Message 12 ____________________________________ Time: 03:45:26 PM PST US From: "Gordon Smith" Subject: AeroElectric-List: Permanent Magnet Alternators or Dynamo In the AEC writings, Matronics postings and Z figures I see references to Permanent Magnet Alternators and Dynamos. Are they one in the same; is the physics basically the same? For instance in a Rotax or Jabiru system with a stator being energized by magnets on the flywheel technically the same as a B&C SD-8? Can regulators for these systems be substituted and crisscrossed? I see where you have illustrated the use of a AM 101406 John Deere Regulator for the Z-9 Corvair system. I also recollect discussions about using of this same regulator as a more robust substitution for the Rotax Ducati and the Jabiru supplied regulator. Following this line of thought, could the AM 101406 be used also with the SD-8? In the Z figures that incorporate Dynamos, I see some variables. I can't quite understand the reasons for some of them. 1. Some systems incorporate a self-excitation feature such as illustrated in Z-25. When is this recommended? Should it be used with the Jabiru or Rotax charging system? 2. Shut down control of these systems generally incorporate a S704-1 relay with a OVM-14 crowbar over voltage module (or AEC9024) across the coil terminals. In some Z figures this S704-1 also utilizes a diode across the coil and some don't. Does the internal electronics of the OVM-14 or AEC9024 preclude the use of such a diode in some cases? 3. The S704-1 relay is employed sometimes in one of the legs of the Dynamo before the regulator and sometimes in the regulator output to the main bus. What is the reason behind this decision? 4. In some Z figures the sense for the regulator is tied directly to the regular 12V.DC output and in others it comes from the main bus through the alternator switch. Is there a preferred reason for one or the other? Gordon Smith ________________________________ Message 13 ____________________________________ Time: 07:33:00 PM PST US From: "Valovich, Paul" Subject: AeroElectric-List: Reverse Current - Life Is Indeed Harder When You're Stupid The dumbest thing I've done on my RV-8A project - I reversed the battery co nnections when reassembling after firewall forward work and planning a fina l elec check before riveting on the top skin. Z-13/8; Smoke and fire from t he diode wire to the main terminal of the battery contactor; corrected pola rity and tried a jumper wire - more smoke and fire when I go to Batt/Alt - making me think there is something wrong further downstream. Ordered a replacement contactor from B&C (this time a -2; previous was a -1 ) but have been on business travel and have not had a chance to troubleshoo t. Jumping the contactor and switching to Batt seems to have all the trons flo wing to their proper destination; going to Batt/Alt causes everything to sh ut down. Any words of wisdom from the forum. Don't bother reminding me what a DS mov e it was - I already know and still can't believe I did it. Paul Valovich N192NM Reserved ________________________________ Message 14 ____________________________________ Time: 09:34:24 PM PST US From: "Bill Bradburry" Subject: RE: AeroElectric-List: Re: labeling panel Geoff, I will have to take some and get them to you. Bill B -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Geoff Heap Sent: Monday, June 14, 2010 5:38 PM Subject: AeroElectric-List: Re: labeling panel Bill Bradburry. Hey Bill. I'm in the market for panel marking. Can we get a pic of your panel? Thanks....Geoff Read this topic online here: http://forums.matronics.com/viewtopic.php?p=301222#301222 ------------------------------------------------------------------------------------- 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.