---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Tue 08/08/06: 26 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:08 AM - DC generators (Wes K) 2. 06:14 AM - Re: EFIS - BMA or GRT? (marknlisa@hometel.com) 3. 07:22 AM - Re: capacitor sizing (Robert L. Nuckolls, III) 4. 07:45 AM - Re: Re: EFIS - BMA or GRT? (John W. Cox) 5. 07:50 AM - Re: EFIS - BMA or GRT? Op Tech (John Tvedte) 6. 08:34 AM - Re: Re which encoder to buy (Charlie Kuss) 7. 08:51 AM - Re: EFIS - BMA or GRT? Op Tech (RV Builder (Michael Sausen)) 8. 09:47 AM - MPJA motion detector for gear up warning (Ernest Christley) 9. 09:51 AM - Auburn, CA Seminar (Sacramento) (Robert L. Nuckolls, III) 10. 10:06 AM - R/C Attitude ind. (Gary) 11. 10:06 AM - Re: DC generators (Hopperdhh@aol.com) 12. 10:15 AM - Re: DC generators (Robert L. Nuckolls, III) 13. 10:44 AM - Re: DC generators (Brian Lloyd) 14. 10:48 AM - Re: capacitor sizing (Brian Lloyd) 15. 11:01 AM - Fig. Z-32 Question (John Swartout) 16. 11:17 AM - Wiring 2 radios w/o audio panel (6440 Auto Parts) 17. 11:18 AM - Re: Tablet & Laptop PC Use in Aircraft (N395V) 18. 11:34 AM - Re: capacitor sizing (Bill Boyd) 19. 02:32 PM - Re: Wiring 2 radios w/o audio panel (Brian Lloyd) 20. 03:41 PM - Re: Wiring 2 radios w/o audio panel (6440 Auto Parts) 21. 04:18 PM - Re: Wiring 2 radios w/o audio panel (Brian Lloyd) 22. 05:06 PM - Re: R/C Attitude ind. (Carl Morgan) 23. 05:41 PM - Re: Wiring 2 radios w/o audio panel (Ed Holyoke) 24. 08:48 PM - Re: Mag switches-what size? (Steve James) 25. 08:51 PM - Re: R/C Attitude ind. (Carl Morgan) 26. 10:58 PM - Re: EFIS - BMA or GRT? Op Tech (Tim Olson) ________________________________ Message 1 _____________________________________ Time: 06:08:41 AM PST US From: Wes K Subject: AeroElectric-List: DC generators --> AeroElectric-List message posted by: Wes K Hello, Can someone from yesteryear confirm that a Cessna with a 50 amp generator, 35 amp regulator and 35 amp main generator CB will not self destruct. Thanks Wes K ________________________________ Message 2 _____________________________________ Time: 06:14:03 AM PST US Subject: AeroElectric-List: Re: EFIS - BMA or GRT? From: marknlisa@hometel.com --> AeroElectric-List message posted by: marknlisa@hometel.com Compair's owner said during a press conference at OSH they won't be using/offering OP Tech gear in any of their aircraft (they're seeking certification for the -9 and -12) because they can't get the systems to work. Mark Sletten Legacy FG N828LM http://www.legacyfgbuilder.com ________________________________ Message 3 _____________________________________ Time: 07:22:27 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: capacitor sizing --> AeroElectric-List message posted by: "Robert L. Nuckolls, III" At 04:01 PM 8/7/2006 -0400, you wrote: >--> AeroElectric-List message posted by: Brian Lloyd > > >On Aug 7, 2006, at 10:53 AM, kesleyelectric wrote: > >>A friend of mine asked if I could come up with a variable voltage >>source to check the trip rating on his homegrown voltage regulator/ OV >>protector. I have an autotransformer that would work well, but >>the output is AC. Running through a bridge rectifier would be no >>problem, but I would like to add a capacitor to smooth the output >>waveform. I do not have an o-scope available, so I am looking for >>suggestions as to capacitor size needed. Any help appreciated. > >Why don't you just borrow a variable voltage DC power supply from >someone? Good idea. Everyone should have a small, metered bench supply for such tasks. They're very handy. I've got probably a half dozen supplies of various capacities. A particularly good value right now is offered by Marlin P. Jones at: http://mpja.com/productview.asp?product=14600+PS They're out of stock on this one right now but should have more shortly. Bob . . . --------------------------------------------------------- < What is so wonderful about scientific truth...is that > < the authority which determines whether there can be > < debate or not does not reside in some fraternity of > < scientists; nor is it divine. The authority rests > < with experiment. > < --Lawrence M. Krauss > --------------------------------------------------------- ________________________________ Message 4 _____________________________________ Time: 07:45:40 AM PST US Subject: RE: AeroElectric-List: Re: EFIS - BMA or GRT? From: "John W. Cox" --> AeroElectric-List message posted by: "John W. Cox" Compair was the rumored source of the legal challenge to Rick Schrameck and Dr. Cadwell's kitbuilt Epic LT at OSH '05. After the dust settled, Rick got the coveted FAA Kit Approval Letter, Dr. Cadwell received his Conditional Airworthiness and Tom Poberzny agreed to prominently display three Epic's on the main flight line. The spat wasted lots of time and money within the FAA. The new 51% Task Force is beginning at the point the dust settled. With Rick selecting OP Tech for the certification pursuit, I would imagine Compair is still pouting by such a statement. Everyone should do the kind of research Tim Olson did regarding his selection of Chelton and watch as Deem Davis's OP Tech comes down the production line. Can someone substantiate a rumor that it won't work? John Cox N49CX -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of marknlisa@hometel.com Sent: Tuesday, August 08, 2006 6:16 AM Subject: AeroElectric-List: Re: EFIS - BMA or GRT? --> AeroElectric-List message posted by: marknlisa@hometel.com Compair's owner said during a press conference at OSH they won't be using/offering OP Tech gear in any of their aircraft (they're seeking certification for the -9 and -12) because they can't get the systems to work. Mark Sletten Legacy FG N828LM http://www.legacyfgbuilder.com ________________________________ Message 5 _____________________________________ Time: 07:50:19 AM PST US Subject: RE: AeroElectric-List: EFIS - BMA or GRT? Op Tech From: "John Tvedte" --> AeroElectric-List message posted by: "John Tvedte" Mike, The Chelton does have 2 AHRS inputs....pin 7&49 on the HD62 connector is AHRS2. One can switch via software on the IDU. One can also wire the units separately - or using AHRS1 input, a switch can select which AHRS is 'active'. I have not checked on the air data portion - John Time: 02:27:43 PM PST US Subject: RE: AeroElectric-List: EFIS - BMA or GRT? Op Tech From: "RV Builder (Michael Sausen)" --> AeroElectric-List message posted by: "RV Builder (Michael Sausen)" Both the Chelton and the OP are single screen or dual screen and both have the option of adding a second or third screen. You can do a one to one comparison based on the prices by ignoring the name next to each. The Chelton does not include the EIS or the probes while the OP only doesn't include the probes. Neither OP nor Chelton are fully redundant at the ADHARS level, only the screen/processing level. Also keep in mind that the new AFS stuff uses x-bow but it may be the 500 series and I believe GRT also might but I'm not positive. However the GRT is a fully redundant system. Michael Sausen RV-10 #352 Buildus Interuptus due to moving ________________________________ Message 6 _____________________________________ Time: 08:34:09 AM PST US From: Charlie Kuss Subject: Re: AeroElectric-List: Re which encoder to buy Skip, Another option (with RS232) is the Rocky Mountain uEncoder. This is a 3.125" instrument which contains the encoder and all three primary instruments and OAT. Info here. http://www.rkymtn.com/ Great deal on an almost new one for sale here http://www.vansairforce.com/community/showthread.php?t-16 Charlie Kuss >I need the rs232 output for the gps, any comments on ACK or >Transcal, or other recommendation? Thank you, Skip Simpson ________________________________ Message 7 _____________________________________ Time: 08:51:14 AM PST US Subject: RE: AeroElectric-List: EFIS - BMA or GRT? Op Tech From: "RV Builder (Michael Sausen)" --> AeroElectric-List message posted by: "RV Builder (Michael Sausen)" Yep, I'm aware that it has the capability. What I was referring to was what is standard. This thread went a little sideways because of some peoples passion with what they purchased. I have no problem with that and I think everyone should be that confident in what they bought. As Alan said do some due diligence before you plop down any amount of money on experimental EFIS's. I haven't made a decision yet personally and I am very anxious to see what comes out from OP & Chelton over the next 6 months or so. They both have some improvements coming. Michael Sausen RV-10 #352 Buildus Interuptus due to moving -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of John Tvedte Sent: Tuesday, August 08, 2006 9:50 AM Subject: RE: AeroElectric-List: EFIS - BMA or GRT? Op Tech --> AeroElectric-List message posted by: "John Tvedte" --> Mike, The Chelton does have 2 AHRS inputs....pin 7&49 on the HD62 connector is AHRS2. One can switch via software on the IDU. One can also wire the units separately - or using AHRS1 input, a switch can select which AHRS is 'active'. I have not checked on the air data portion - John Time: 02:27:43 PM PST US Subject: RE: AeroElectric-List: EFIS - BMA or GRT? Op Tech From: "RV Builder (Michael Sausen)" --> AeroElectric-List message posted by: "RV Builder (Michael Sausen)" Both the Chelton and the OP are single screen or dual screen and both have the option of adding a second or third screen. You can do a one to one comparison based on the prices by ignoring the name next to each. The Chelton does not include the EIS or the probes while the OP only doesn't include the probes. Neither OP nor Chelton are fully redundant at the ADHARS level, only the screen/processing level. Also keep in mind that the new AFS stuff uses x-bow but it may be the 500 series and I believe GRT also might but I'm not positive. However the GRT is a fully redundant system. Michael Sausen RV-10 #352 Buildus Interuptus due to moving ________________________________ Message 8 _____________________________________ Time: 09:47:07 AM PST US From: Ernest Christley Subject: AeroElectric-List: MPJA motion detector for gear up warning --> AeroElectric-List message posted by: Ernest Christley OK, I've been bit. I bought an MPJA motor controller kit to dim lights with, and they sent me a catalogue. The thing is full of cheap little kits to make circuit boards to do all sorts of neat projects. What I have in mind now is there motion detector kit. It's effective to about 15ft. That is justs about the right distance for the gear up warning to start screeching. What I have now is a normally open micro push-button switch that my locking pin depresses when it's fully seated. Another normally open push-button on the retraction handle and in series with the first will let me light an LED on the panel when the gear are down and locked and I push the button. (Drop gear and verify). So, now I'm thinking a more automated system would be to replace the normally open switch at the gear lock-pin with a normally closed, and let it power the motion detector, which will raise a ruckuss if it senses anything, be it another plane (I'm building a low wing) or the ground. Has anyone tried this? At only $15 or so, the thing is just begging to be tried. -- ,|"|"|, Ernest Christley | ----===<{{(oQo)}}>===---- Dyke Delta Builder | o| d |o http://ernest.isa-geek.org | ________________________________ Message 9 _____________________________________ Time: 09:51:12 AM PST US From: "Robert L. Nuckolls, III" Subject: AeroElectric-List: Auburn, CA Seminar (Sacramento) --> AeroElectric-List message posted by: "Robert L. Nuckolls, III" EAA Chapter 526 has requested a seminar presentation on a really tight schedule. Dr. Dee and I have purchased tickets to travel to Auburn, CA for a presentation on August 26/27. This is an invitation for Northern CA members of the AeroElectric List to join us for a weekend of intense airplane-speak. See: http://aeroelectric.com/seminars/Auburn.html We'd be pleased to meet you in person . . . Bob . . . --------------------------------------------------------- < What is so wonderful about scientific truth...is that > < the authority which determines whether there can be > < debate or not does not reside in some fraternity of > < scientists; nor is it divine. The authority rests > < with experiment. > < --Lawrence M. Krauss > --------------------------------------------------------- ________________________________ Message 10 ____________________________________ Time: 10:06:33 AM PST US From: "Gary" Subject: AeroElectric-List: R/C Attitude ind. I have an electric r/c allen attitude indicator and there are 4 pins in the back A,B,C,D Does anyone know how I should wire this up? Thank you G. RV8 Wirrrrrrrrrrring ________________________________ Message 11 ____________________________________ Time: 10:06:33 AM PST US From: Hopperdhh@aol.com Subject: Re: AeroElectric-List: DC generators Wes, I guess I qualify. It seems like the 50 amp generator should be very safe with a 35 amp regulator. Of course, this assumes that the regulator is adjusted right. I would think that the 35 amp CB would trip is this is not the case. I could make wise cracks here, but I'll leave that for someone else! Dan Hopper Automotive Electrical Engineer, Ret. In a message dated 8/8/2006 9:12:19 A.M. Eastern Daylight Time, wsknettl@centurytel.net writes: --> AeroElectric-List message posted by: Wes K Hello, Can someone from yesteryear confirm that a Cessna with a 50 amp generator, 35 amp regulator and 35 amp main generator CB will not self destruct. Thanks Wes K ________________________________ Message 12 ____________________________________ Time: 10:15:02 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: DC generators --> AeroElectric-List message posted by: "Robert L. Nuckolls, III" At 08:04 AM 8/8/2006 -0500, you wrote: >--> AeroElectric-List message posted by: Wes K > >Hello, >Can someone from yesteryear confirm that a Cessna with a 50 amp generator, >35 amp regulator and 35 amp main generator CB will not self destruct. The breaker seems undersized. There's no risk of "destruction" but a slight risk for nuisance tripping along with an inability to utilize the generator's full output capability due to the overly protective regulator. But if the present setup has been working "okay", there's probably no pressing reason to mess with it. Bob . . . --------------------------------------------------------- < What is so wonderful about scientific truth...is that > < the authority which determines whether there can be > < debate or not does not reside in some fraternity of > < scientists; nor is it divine. The authority rests > < with experiment. > < --Lawrence M. Krauss > --------------------------------------------------------- ________________________________ Message 13 ____________________________________ Time: 10:44:46 AM PST US From: Brian Lloyd Subject: Re: AeroElectric-List: DC generators --> AeroElectric-List message posted by: Brian Lloyd On Aug 8, 2006, at 9:04 AM, Wes K wrote: > --> AeroElectric-List message posted by: Wes K > > > Hello, > Can someone from yesteryear confirm that a Cessna with a 50 amp > generator, 35 amp regulator and 35 amp main generator CB will not > self destruct. It will not self destruct. The over-current relay in the regulator will open at 35A and reduce the field current, reducing output. All you will see is the generator switch from constant voltage to constant current and the bus voltage will then drop. The breaker sounds a bit undersized to me. You might get nuisance trips but if it is working, who am I to fight with success. Brian Lloyd 361 Catterline Way brian-yak AT lloyd DOT com Folsom, CA 95630 +1.916.367.2131 (voice) +1.270.912.0788 (fax) I fly because it releases my mind from the tyranny of petty things . . . Antoine de Saint-Exupry ________________________________ Message 14 ____________________________________ Time: 10:48:09 AM PST US From: Brian Lloyd Subject: Re: AeroElectric-List: capacitor sizing --> AeroElectric-List message posted by: Brian Lloyd On Aug 8, 2006, at 10:19 AM, Robert L. Nuckolls, III wrote: >> Why don't you just borrow a variable voltage DC power supply from >> someone? > > > Good idea. Everyone should have a small, metered bench > supply for such tasks. They're very handy. I've got probably > a half dozen supplies of various capacities. A particularly > good value right now is offered by Marlin P. Jones at: > > http://mpja.com/productview.asp?product=14600+PS > > They're out of stock on this one right now but should > have more shortly. Here is a 25A lightweight switcher that should be able to run most of your aircraft electrical system for testing. Wire it to your alternator's B-lead so you can test everything. http://www.mfjenterprises.com/products.php?prodid=MFJ-4225MV Brian Lloyd 361 Catterline Way brian-yak AT lloyd DOT com Folsom, CA 95630 +1.916.367.2131 (voice) +1.270.912.0788 (fax) I fly because it releases my mind from the tyranny of petty things . . . Antoine de Saint-Exupry ________________________________ Message 15 ____________________________________ Time: 11:01:15 AM PST US From: "John Swartout" Subject: AeroElectric-List: Fig. Z-32 Question An asterisk indicates the 14 AWG wire from the Main Battery Bus to the E-Bus Alternate Feed Relay needs to be 6" long or less. Considering that it is protected by a fuse at the bus, why is it necessary to keep it short? Thanks. John ________________________________ Message 16 ____________________________________ Time: 11:17:53 AM PST US From: "6440 Auto Parts" Subject: AeroElectric-List: Wiring 2 radios w/o audio panel --> AeroElectric-List message posted by: "6440 Auto Parts" Got a friend that wants to install a second radio in his C150 but does not want to install an audio panel. What kind of swicth or switches should he use to switch between the radios to make this work ? Randy ________________________________ Message 17 ____________________________________ Time: 11:18:00 AM PST US Subject: AeroElectric-List: Re: Tablet & Laptop PC Use in Aircraft From: "N395V" --> AeroElectric-List message posted by: "N395V" For several years I have played with several computers and computer based programs in the cockpit to replace charts, approach plates, portable GPS and in cockpit weather. There are some truths that cannot be violated. Unless you bluetooth and have a really big battery there will be too many wires no matter what you do. Blue tooth presents its own problems and does not totally eliminate wiring. No current tablet/portable has excellent sunlight readability. All the programs are resource hogs and often move slowly when you badly need fast. They are windows based and prone to crash at the worst possible moment. If you frequently go high ( . (low teens and above)you will gork the drive. Ask me how I know. I have used Flitesoft, Vista, Truemap, Chartcase on HP TC 1100s, Motion M1300, and Sony U750. While all are great programs and great machines they all suffer from the aformentioned problems. If you put it in a pressurised case you still have the other problems plus a bulky case and more wiring and expense. Solid state hard drives are expensive if you want to run your computer as a computer in addition to it's flight duties. My need was for weather, moving map, charts and plates. After all the above gyrations I settled on a Flight Cheetah 210 with a solid state drive. It is a windows 2000 based unit that is skinnied down to only run the Truemap Software. It is fast and reliable and immune to altitude. It is readable in direct sunlight. It still has lots of wires but since it only runs aviation programs I hardwired it into the plane. An alternative would be a 396/496 with a card reader tablet for plates. Building a computer system into a pressurised case wil in the end cost as musc as a dedicated unit in the plane plus your notebook. It will just not work as well an will be a real PITA to set up and remove. -------- Milt N395V F1 Rocket Read this topic online here: http://forums.matronics.com/viewtopic.php?p=53432#53432 ________________________________ Message 18 ____________________________________ Time: 11:34:22 AM PST US From: "Bill Boyd" Subject: Re: AeroElectric-List: capacitor sizing Bob, Jumping in a little late here on this concept; I am going to put an SD-8 into my flying RV later on for Z-13/8-style redundancy. I caught some discussion about the little dynamo not being self-exciting without the added Z-25 circuitry. I'm trying to understand what failure mode would cause the SD-8 not to be connected to the battery and getting its excitation from that source. Wired as per Z-13/8, it seems the battery is always available to the alternator via the S-704-1 relay. Are we addressing a scenario where the battery itself is taken all the way down so that it cannot close the relay? That just seems really remote to me. Thanks for clearing this up for me, as I know you will ;-) -Bill B On 8/8/06, Robert L. Nuckolls, III wrote: > > --> AeroElectric-List message posted by: "Robert L. Nuckolls, III" < > nuckollsr@cox.net> > > At 04:01 PM 8/7/2006 -0400, you wrote: > > >--> AeroElectric-List message posted by: Brian Lloyd > > > > > > >On Aug 7, 2006, at 10:53 AM, kesleyelectric wrote: > > > >>A friend of mine asked if I could come up with a variable voltage > >>source to check the trip rating on his homegrown voltage regulator/ OV > >>protector. I have an autotransformer that would 8work well, but > >>the output is AC. Running through a bridge rectifier would be no > >>problem, but I would like to add a capacitor to smooth the output > >>waveform. I do not have an o-scope available, so I am looking for > >>suggestions as to capacitor size needed. Any help appreciated. > > > >Why don't you just borrow a variable voltage DC power supply from > >someone? > > > Good idea. Everyone should have a small, metered bench > supply for such tasks. They're very handy. I've got probably > a half dozen supplies of various capacities. A particularly > good value right now is offered by Marlin P. Jones at: > > http://mpja.com/productview.asp?product=14600+PS > > They're out of stock on this one right now but should > have more shortly. > > Bob . . . > > > --------------------------------------------------------- > < What is so wonderful about scientific truth...is that > > < the authority which determines whether there can be > > < debate or not does not reside in some fraternity of > > < scientists; nor is it divine. The authority rests > > < with experiment. > > < --Lawrence M. Krauss > > --------------------------------------------------------- > > ________________________________ Message 19 ____________________________________ Time: 02:32:33 PM PST US From: Brian Lloyd Subject: Re: AeroElectric-List: Wiring 2 radios w/o audio panel --> AeroElectric-List message posted by: Brian Lloyd On Aug 8, 2006, at 2:16 PM, 6440 Auto Parts wrote: > --> AeroElectric-List message posted by: "6440 Auto Parts" > > > Got a friend that wants to install a second radio in his C150 > but does not want to install an audio panel. What kind of swicth or > switches should he use to switch between the radios to make this > work ? Does he want to use headphones, the loudspeaker, or both? Does he want to be able to listen to both radios at the same time or does he want to only hear the selected radio? Does he have an intercom? Once I have that information I can answer your question. Brian Lloyd 361 Catterline Way brian-yak AT lloyd DOT com Folsom, CA 95630 +1.916.367.2131 (voice) +1.270.912.0788 (fax) I fly because it releases my mind from the tyranny of petty things . . . Antoine de Saint-Exupry ________________________________ Message 20 ____________________________________ Time: 03:41:17 PM PST US From: "6440 Auto Parts" Subject: Re: AeroElectric-List: Wiring 2 radios w/o audio panel --> AeroElectric-List message posted by: "6440 Auto Parts" Brian he wants to use headphones but no loudspeaker, he will only use one radio at a time, and he has a 2 place in panel intercom (he thinks it's Sigtronics but not sure without looking) Thanks in advance Randy ----- Original Message ----- From: "Brian Lloyd" Sent: Tuesday, August 08, 2006 4:30 PM Subject: Re: AeroElectric-List: Wiring 2 radios w/o audio panel --> AeroElectric-List message posted by: Brian Lloyd On Aug 8, 2006, at 2:16 PM, 6440 Auto Parts wrote: > --> AeroElectric-List message posted by: "6440 Auto Parts" > > > Got a friend that wants to install a second radio in his C150 but does > not want to install an audio panel. What kind of swicth or switches > should he use to switch between the radios to make this work ? Does he want to use headphones, the loudspeaker, or both? Does he want to be able to listen to both radios at the same time or does he want to only hear the selected radio? Does he have an intercom? Once I have that information I can answer your question. Brian Lloyd 361 Catterline Way brian-yak AT lloyd DOT com Folsom, CA 95630 +1.916.367.2131 (voice) +1.270.912.0788 (fax) I fly because it releases my mind from the tyranny of petty things . . . Antoine de Saint-Exupry ________________________________ Message 21 ____________________________________ Time: 04:18:32 PM PST US From: Brian Lloyd Subject: Re: AeroElectric-List: Wiring 2 radios w/o audio panel --> AeroElectric-List message posted by: Brian Lloyd On Aug 8, 2006, at 6:39 PM, 6440 Auto Parts wrote: > --> AeroElectric-List message posted by: "6440 Auto Parts" > > > Brian he wants to use headphones but no loudspeaker, he > will only use one radio at a time, and he has a 2 place in panel > intercom (he thinks it's Sigtronics but not sure without looking) Hmm. If it were me I would want to be able listen to comm 2 while using comm 1 to communicate. For example, I would want to listen to comm 2 to hear ATIS while continuing to monitor and communicate with ATC on comm 1. And what about nav? Any of the radios have nav output? Brian Lloyd 361 Catterline Way brian-yak AT lloyd DOT com Folsom, CA 95630 +1.916.367.2131 (voice) +1.270.912.0788 (fax) I fly because it releases my mind from the tyranny of petty things . . . Antoine de Saint-Exupry ________________________________ Message 22 ____________________________________ Time: 05:06:25 PM PST US From: "Carl Morgan" Subject: RE: AeroElectric-List: R/C Attitude ind. Connector: MS3116E8-4S Pin A: Gnd Pin B: Gnd lights Pin C: +14 VDC Pin D: 0 - +14 VDC Lights http://www.kellymfg.com/data/RCA26brochure.pdf Page 2 - upper right corner. The information is also on a sticker on the back of my gyro. HTH, Carl -- ZK-VII - RV 7A QB - finishing? - New Zealand http://www.rvproject.gen.nz/ -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com]On Behalf Of Gary Sent: Wednesday, 9 August 2006 5:05 a.m. To: aeroelectric-list@matronics.com Subject: AeroElectric-List: R/C Attitude ind. I have an electric r/c allen attitude indicator and there are 4 pins in the back A,B,C,D Does anyone know how I should wire this up? Thank you G. RV8 Wirrrrrrrrrrring -- ________________________________ Message 23 ____________________________________ Time: 05:41:51 PM PST US From: "Ed Holyoke" Subject: RE: AeroElectric-List: Wiring 2 radios w/o audio panel --> AeroElectric-List message posted by: "Ed Holyoke" Randy, What I did was to use a DPST switch to move the mike and PTT leads (from the intercom) between the 2 com radios. I labeled the switch XMIT and put a Com 1 label on top and Com 2 underneath. I double check the switch before transmitting to make sure I'm getting out on the radio I had intended to use. If both Coms are at nearly the same frequency, I sometimes get some weird feedback if I don't turn down the radio I'm not transmitting on, but other than that it works fine. I hooked the audio outputs together through 100 ohm resistors. I also have a NAV radio hooked up the same way. Another guy I know didn't use the resistors and it works fine for him. I use the individual volume controls on the radios to listen to either or both. Very handy for listening to ATIS or AWOS. I often leave Com 2 on guard or flight watch on cross country flights and turn down if it interferes with flight following and when entering the terminal area. I hooked up a failsafe headset jack directly to Com 1 in case the intercom fails. I don't know if I needed to do that, but it seemed like a good idea at the time. Pax, Ed Holyoke -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of 6440 Auto Parts Sent: Tuesday, August 08, 2006 3:39 PM Subject: Re: AeroElectric-List: Wiring 2 radios w/o audio panel --> AeroElectric-List message posted by: "6440 Auto Parts" Brian he wants to use headphones but no loudspeaker, he will only use one radio at a time, and he has a 2 place in panel intercom (he thinks it's Sigtronics but not sure without looking) Thanks in advance Randy ----- Original Message ----- From: "Brian Lloyd" Sent: Tuesday, August 08, 2006 4:30 PM Subject: Re: AeroElectric-List: Wiring 2 radios w/o audio panel --> AeroElectric-List message posted by: Brian Lloyd On Aug 8, 2006, at 2:16 PM, 6440 Auto Parts wrote: > --> AeroElectric-List message posted by: "6440 Auto Parts" > > > Got a friend that wants to install a second radio in his C150 but does > not want to install an audio panel. What kind of swicth or switches > should he use to switch between the radios to make this work ? Does he want to use headphones, the loudspeaker, or both? Does he want to be able to listen to both radios at the same time or does he want to only hear the selected radio? Does he have an intercom? Once I have that information I can answer your question. Brian Lloyd 361 Catterline Way brian-yak AT lloyd DOT com Folsom, CA 95630 +1.916.367.2131 (voice) +1.270.912.0788 (fax) I fly because it releases my mind from the tyranny of petty things . . . Antoine de Saint-Exupry ________________________________ Message 24 ____________________________________ Time: 08:48:32 PM PST US From: "Steve James" Subject: Re: AeroElectric-List: Mag switches-what size? Bob, thanks for the info. I wanted something more specific, so I called Unison.They said 3A @ 200V AC is the min rating, for anyone who wants to know. --> AeroElectric-List message posted by: "Robert L. Nuckolls, III" < > nuckollsr@cox.net> > > At 01:45 PM 8/3/2006 -0600, you wrote: > > >I want to use smaller size switches in place of the normal rotary type > mag > >switch. What is minimum current rating/volt rating for such a switch when > >used with regular mags? Since these ground the mags, it's not clear to me > >how to size them... any input is appreciated. Thx, Steve. > > Plain vanilla toggle switches are fine. See > > http://www.aeroelectric.com/Pictures/Switches/s700dwg.jpg > > http://www.aeroelectric.com/Pictures/Switches/switch2.jpg > > Magnetos are not especially "stressful" to their > controlling switches. The standard toggle has been > the ignition switch of choice called out in the z-figures > since day-one irrespective of the ignition system technology. > > Bob . . . > > > --------------------------------------------------------- > < What is so wonderful about scientific truth...is that > > < the authority which determines whether there can be > > < debate or not does not reside in some fraternity of > > < scientists; nor is it divine. The authority rests > > < with experiment. > > < --Lawrence M. Krauss > > --------------------------------------------------------- > > ________________________________ Message 25 ____________________________________ Time: 08:51:28 PM PST US From: "Carl Morgan" Subject: RE: AeroElectric-List: R/C Attitude ind. Ok - my mistake - I just looked at our non-lighted version rather than RTFMing.... Pin A: Gnd Pin B: +14VDC on the label on the back, and I've just powered it up - noisy! YMMV... Carl -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com]On Behalf Of Carl Morgan Sent: Wednesday, 9 August 2006 12:05 p.m. To: aeroelectric-list@matronics.com Subject: RE: AeroElectric-List: R/C Attitude ind. Connector: MS3116E8-4S Pin A: Gnd Pin B: Gnd lights Pin C: +14 VDC Pin D: 0 - +14 VDC Lights http://www.kellymfg.com/data/RCA26brochure.pdf Page 2 - upper right corner. The information is also on a sticker on the back of my gyro. HTH, Carl -- ZK-VII - RV 7A QB - finishing? - New Zealand http://www.rvproject.gen.nz/ -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com]On Behalf Of Gary Sent: Wednesday, 9 August 2006 5:05 a.m. To: aeroelectric-list@matronics.com Subject: AeroElectric-List: R/C Attitude ind. I have an electric r/c allen attitude indicator and there are 4 pins in the back A,B,C,D Does anyone know how I should wire this up? Thank you G. RV8 Wirrrrrrrrrrring -- ________________________________ Message 26 ____________________________________ Time: 10:58:53 PM PST US From: Tim Olson Subject: Re: AeroElectric-List: EFIS - BMA or GRT? Op Tech --> AeroElectric-List message posted by: Tim Olson I have just a couple things to add about EFIS Choices. As someone said, make a list of your requirements on paper before you go shopping. Read as much as you can so you even KNOW all of the features you may be looking for. Then pick an EFIS that has as much as possible that's on your list. Everyone's list will be different. Fly behind anything you think you might want to buy. It will be an incredibly valuable experience. I nearly built an RV-6 at one point...but flew one first and that put me into a holding pattern. An EFIS is a complex piece of equipment. It's worth a few hundred bucks to find someone and fly behind one. One thing that people always forget about with their EFIS is database updates. A GRT or BMA might be a fine EFIS for you, but if you're going to rely on them to fly approaches, remember that you're going to need a current database. Or if you're controlling the approach with a 430/530/480, you will need a current one there....or at least a current chart in hand and the ability to keep in close enough touch during the approach that you don't let your fancy GPS/Com or EFIS fly you on a non-current approach. I have a Chelton system, with a database subscription. If you can't get a database update on a 28 day cycle for whatever your primary navigation gear is, you're going to be severely limited. That's my main gripe about the GRT stuff, by the way. You really need to look at the whole big picture in this much detail. As far as the AHRS goes, I think someone needs to set the record straight on the 420/425/500 stuff being flung around. The 420 and 425 are pretty darn close, and I've been seeing lots of actual data lately showing there are some GPS issues with the unit that may be causing some of the failures people are having. I'd be a bit leery until the company has it solved and wouldn't assume the 420 isn't affected. I've now heard that numerous 425 owners who have "fixed" units are still having problems. Then, dig in a bit further and ask someone in the know EXACTLY what is the difference between the real certified 500 system, and the "500 based" systems that are being touted around. Lots of people are saying theirs use the 500, but in at least some cases, it is not truly the same 500....but a 500 with some of the specialties removed...turning it into a slightly less ruggedized and non-certified experimental unit. Do some serious research into this. Don't forget cost. Nobody should take offense when someone picks an EFIS that's not their favorite. I personally thought the GRT stuff looked pretty good for that budget. Things like the database updates, and the screen quality knocked them out for me, but for some buyers, it may be their dream panel. Everyone has a different mission. It's also nice to see people like Deems try something a little less common in our EFIS world. The OP stuff hasn't really been as popular with our "budget" kits, so it'll be interesting to see how it all goes. It is definitely different than the other offerings. As far as screen size, having never flown behind the huge screen systems, but having flown behind my Cheltons, I personally can't see why a bigger screen is necessarily better. It would depend on how flexible the information placement is. Certainly though, numerous smaller screens can be just as effective as a pair of larger screen. Since our panels are only so big, we have limited space, and depending on your personal requirements for backup systems, you may not have the space you want for big screens. Just rest assured that big or small, you should be able to get all the functionality you need into your panel, and from a practical point of view I really don't see that the size would matter much, as long as you have something in the neighborhood of the size of the GRT's. There's just way too much involved in these decisions, and making them can be quite trying at times. Just make sure you don't sell yourself short an make a quick and rash decision. One minor note: For those who demand dual AHRS systems, I know the GRT already does this, but now with the Pinpoints for the Cheltons you have that option as well. Not a requirement for everyone, but just so you know, there is now the option. Tim Olson - RV-10 N104CD - Flying do not archive Alan K. Adamson wrote: > --> AeroElectric-List message posted by: "Alan K. Adamson" > > Um, who said anything about "integrated" as OP does. I'll rephrase that to > "faceless". The Cheltons are standalone radios/Transponder that can be > integrated into the FMS. I have no idea of price but I understand they will > be available in standalone with the funky screws and standalone with regular > mounting (for us normal folks). They may also come with a removable face > that would let you mount the bulk of the hardware elsewhere. > > Also, not sure what you are talking about on the radios. The card that I > saw looked normal, and here is the webpage, the displays are 2 digits past > the decimal, just like everyone else. The unit on top is a transponder. > > http://www.d2av.com/Radios/ > > Alan > -----Original Message----- > From: owner-aeroelectric-list-server@matronics.com > [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of RV > Builder (Michael Sausen) > Sent: Monday, August 07, 2006 7:24 PM > To: aeroelectric-list@matronics.com > Subject: RE: AeroElectric-List: EFIS - BMA or GRT? Op Tech > > --> AeroElectric-List message posted by: "RV Builder (Michael Sausen)" > --> > > Just talked to Josh and you are correct. They look very nice! About > the same price as a G900. Just like the OP though, I don't see the > point of an integrated radios. Lot more money for not much added > functionality. Personal preference I guess. One thing I thought was funny > was the number of digits on the radio display at OSH. Only one digit past > the decimal point. Hmmmm. > > Michael Sausen > > -----Original Message----- > From: owner-aeroelectric-list-server@matronics.com > [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Alan K. > Adamson > Sent: Monday, August 07, 2006 5:09 PM > To: aeroelectric-list@matronics.com > Subject: RE: AeroElectric-List: EFIS - BMA or GRT? Op Tech > > --> AeroElectric-List message posted by: "Alan K. Adamson" > --> > > Uh, don't think that's true.... Maybe I got my inches wrong, but D2AV had a > handout of the "large display" (could it have been 8.4", I don't > remember")... Coming soon to an Avionics Shop near your. Not just for the > Certified guys, but also for the EX guys...plus new digital radios. > > Alan > > -----Original Message----- > From: owner-aeroelectric-list-server@matronics.com > [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of RV > Builder (Michael Sausen) > Sent: Monday, August 07, 2006 5:52 PM > To: aeroelectric-list@matronics.com > Subject: RE: AeroElectric-List: EFIS - BMA or GRT? Op Tech > > --> AeroElectric-List message posted by: "RV Builder (Michael Sausen)" > --> > > Sorry, one last thing. The 10" Chelton screen is only available in the > certified model. If you need to ask how much you can't afford it. :-) > > Michael Sausen > RV-10 #352 Buildus Interuptus due to moving > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >