---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Tue 03/29/16: 32 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:25 AM - Re: another switch question (John Tipton) 2. 12:25 AM - Re: another switch question (John Tipton) 3. 06:01 AM - Re: another switch question (ARGOLDMAN@aol.com) 4. 08:08 AM - Ring Terminals for Tyco LEV100A4ANG (Hariharan Gopalan) 5. 08:10 AM - Re: Charging circuit: Sanity check (Robert L. Nuckolls, III) 6. 08:11 AM - Re: another switch question (Robert L. Nuckolls, III) 7. 08:24 AM - Re: How do I stop audio hash noise generated by a new set of NavStrobes? (Robert L. Nuckolls, III) 8. 08:30 AM - Re: fused or not...now keeping noise out..do caps work? (Robert L. Nuckolls, III) 9. 08:40 AM - Re: another switch question (Ken Ryan) 10. 08:51 AM - Re: Ring Terminals for Tyco LEV100A4ANG (Jeff Luckey) 11. 09:38 AM - Small diameter coax into standard BNC (B Tomm) 12. 09:40 AM - Re: Ring Terminals for Tyco LEV100A4ANG (Hariharan Gopalan) 13. 09:42 AM - Re: Ring Terminals for Tyco LEV100A4ANG (Robert L. Nuckolls, III) 14. 09:59 AM - Re: Small diameter coax into standard BNC (Jared Yates) 15. 09:59 AM - Re: Small diameter coax into standard BNC (Daniel Hooper) 16. 10:48 AM - Re: Small diameter coax into standard BNC (B Tomm) 17. 11:10 AM - Re: Small diameter coax into standard BNC (Daniel Hooper) 18. 11:19 AM - Re: another switch question (jonlaury) 19. 11:19 AM - 2 pole connector () 20. 11:30 AM - Re: Re: another switch question (John Tipton) 21. 11:38 AM - Re: another switch question (John Tipton) 22. 12:06 PM - Re: 2 pole connector (ARGOLDMAN@aol.com) 23. 12:15 PM - Re: 2 pole connector (Rick Beebe) 24. 12:22 PM - Re: 2 pole connector () 25. 12:50 PM - Coax Cable Connector Question (Chris Mullins) 26. 01:12 PM - Re: 2 pole connector () 27. 01:38 PM - Re: Coax Cable Connector Question (Robert L. Nuckolls, III) 28. 02:43 PM - Re: 2 pole connector (David Lloyd) 29. 03:09 PM - Re: How do I stop audio hash noise generated by a new set of NavStrobes? (DeWitt Whittington) 30. 04:44 PM - Re: 2 pole connector () 31. 05:00 PM - Re: Coax Cable Connector Question (Robert L. Nuckolls, III) 32. 05:05 PM - Re: How do I stop audio hash noise generated by a new set of NavStrobes? (Robert L. Nuckolls, III) ________________________________ Message 1 _____________________________________ Time: 12:25:35 AM PST US Subject: Re: AeroElectric-List: another switch question From: John Tipton I don't know if the manufacturer would have anything to add, this is obvious ly an automotive based switch so what the NC contacts would be used for in a modern car is anyone's guess - and the advert states the contacts are rated 2-5 amps John Sent from my iPad ----x--O--x---- > On 29 Mar 2016, at 03:59 am, ashleysc@broadstripe.net wrote: > > Hi Ken; > I would like the mfg. and model number of that switch, please. > Cheers! Stu. > > From: "Ken Ryan" > To: aeroelectric-list@matronics.com > Sent: Monday, March 28, 2016 3:12:39 PM > Subject: AeroElectric-List: another switch question > > I am curious about the function of the pictured "Engine Start" switch. It i s a push button switch with four terminals on the back. Two of the terminals are normally open, two are normally closed. I can see how the normally open terminals could be used to drive a starter motor relay, but what would the t ypical use be for the normally closed terminals on an engine start switch? S ee attached pic. > 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D _ 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D ________________________________ Message 2 _____________________________________ Time: 12:25:46 AM PST US Subject: Re: AeroElectric-List: another switch question From: John Tipton http://www.steinair.com/storedetail.cfm?productid=668 Sent from my iPad ----x--O--x---- > On 29 Mar 2016, at 03:59 am, ashleysc@broadstripe.net wrote: > > Hi Ken; > I would like the mfg. and model number of that switch, please. > Cheers! Stu. > > From: "Ken Ryan" > To: aeroelectric-list@matronics.com > Sent: Monday, March 28, 2016 3:12:39 PM > Subject: AeroElectric-List: another switch question > > I am curious about the function of the pictured "Engine Start" switch. It i s a push button switch with four terminals on the back. Two of the terminals are normally open, two are normally closed. I can see how the normally open terminals could be used to drive a starter motor relay, but what would the t ypical use be for the normally closed terminals on an engine start switch? S ee attached pic. > 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D _ 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D ________________________________ Message 3 _____________________________________ Time: 06:01:19 AM PST US From: ARGOLDMAN@aol.com Subject: Re: AeroElectric-List: another switch question My guess is that it is a somewhat standard pushbutton switch back to which the manufacturer attaches a "start" placarded front. Just ignore the nc part. If you really want you can use the NC part to disable other electronics during your start, however you add one more point of failure to a switch of possible questionable reliability.-- With this switch, if it fails, so you can't start your craft (you are probably on the ground at this point) whereas if it fails you may not have use of the electronics that it defeats. It is not unusual to not use parts of a switch or IC Rich Rich In a message dated 3/28/2016 7:57:10 P.M. Pacific Daylight Time, ashleysc@broadstripe.net writes: Hi Ken; That's a mighty rugged looking switch! I think the normally closed contacts would normally be used to turn off (temporarily) anything you didn't want running while engaging the starter. Cheers! Stu. ____________________________________ From: "Ken Ryan" Sent: Monday, March 28, 2016 3:12:39 PM Subject: AeroElectric-List: another switch question I am curious about the function of the pictured "Engine Start" switch. It is a push button switch with four terminals on the back. Two of the terminals are normally open, two are normally closed. I can see how the normally open terminals could be used to drive a starter motor relay, but what would the typical use be for the normally closed terminals on an engine start switch? See attached pic. ________________________________ Message 4 _____________________________________ Time: 08:08:24 AM PST US Subject: AeroElectric-List: Ring Terminals for Tyco LEV100A4ANG From: Hariharan Gopalan Hello Group I have been looking for terminal lugs for these contactors without much luck. These contactors have terminals that take M5 (0.19") bolts and the smallest holes on a copper lug that I could find are 5/16". To those who have used these contactors, what lugs did you use? Thanks Hari ________________________________ Message 5 _____________________________________ Time: 08:10:24 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Charging circuit: Sanity check Correct. Most automotive products are magnetically 'geared' for full rated output in the 5000 rpm range. Bob . . . ________________________________ Message 6 _____________________________________ Time: 08:11:13 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: another switch question At 05:12 PM 3/28/2016, you wrote: >I am curious about the function of the pictured "Engine Start" >switch. It is a push button switch with four terminals on the back. >Two of the terminals are normally open, two are normally closed. I >can see how the normally open terminals could be used to drive a >starter motor relay, but what would the typical use be for the >normally closed terminals on an engine start switch? See attached pic. >Content-Type: image/jpeg; name="engine-start-switch.jpg" >Content-Disposition: attachment; filename="engine-start-switch.jpg" >X-Attachment-Id: f_imcjusoz0 I would guess that the n.c. side disconnects accessories not intended to be on the bus during cranking. I think all my cars drop the accessory bus during cranking. Bob . . . ________________________________ Message 7 _____________________________________ Time: 08:24:26 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: How do I stop audio hash noise generated by a new set of NavStrobes? At 09:52 PM 3/27/2016, you wrote: >Whittington > >Hello, Bob, and all you AeroElectric forum >participants. This is the first time I=99ve >posted in years, but I=99ve got a problem I >can=99t solve. At Oshkosh 2015 I bought a set of >the NavStrob LED nav/position light units. They >directly replace the red and green wingtip nave >bulbs, and the white rear position light. I >cleaned out the sockets for all three locations >and sprayed them with CorrosionX. Then inserted >the NavStrobe units. When you turn on the Nav >light switch once, all three burn with a steady >light. Flip them off, and turn on again, and >they flash like strobes. Slick. But, in my 1975 >172L, when we turn on the COM radios, then turn >on the strobes, there is a very unpleasant >=9Chash=9D noise when the VOX gate opens as when >you speak or a transmission comes in from someone else. > >The designer of the NavStrobe unit suggests >cleaning all the light sockets again. And if >that doesn=99t get rid of the hash noise (and it >didn=99t) install a choke coil. > >So, any suggestions? And what size or type of >choke should I buy and where do I install it? All suggestions welcome. Are they ever supposed to flash? These devices SHOULD contain little DC/DC constant current converters that are a special form of switchmode power supply. Some years ago I crafted and sold a filter assembly to accept the DC/DC converter recommended for popular DIY nav light project. I sold several dozens of these assemblies with no complaints/returns so my sense is that they performed as adverstised to stand off the VHF radiated noise from the Luxdrive module. http://www.aeroelectric.com/Catalog/AEC/9051/AEC9051.jpg You MIGHT be experiencing a similar condition. Do I presume correctly that you're working with devices that look like this? Emacs! Kinda cute . . . but not very reassuring from the perspective of design for EMC. Minimized radiation from high frequency power supplies BEGINS with tightly clustered components with short leads to minimize the radio frequency radiation footprint. That sprinkling of parts gives pause for doubts. If your lamps are different, shoot me pictures or links and a link to the installation instructions. We may have to conduct some experiments to identify the noise propagation mode . . . Might have you send me one to bench check. I just bought a spectrum analyzer that would help identify the device's un-neighborly behaviors. Bob . . . ________________________________ Message 8 _____________________________________ Time: 08:30:25 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: fused or not...now keeping noise out..do caps work? At 12:38 AM 3/28/2016, you wrote: >Bob, >In the same vein... >After having a new intercom fitted in my radio stack, I have >developed a serious amount of radio noise as soon as the rpm's hit >the 2000 mark. The sq button has no effect on the severity of this >noise. It is as if a source is transmitting to the radio! > >I am told that adding a 22000 microfarad cap across the power feed >to the radios will solve this problem. Try it and report back. Do you have the capacitor already? If not, I can send you something to try. I'm betting long odds against a successful fix but if that's what the mfgr recommends, we should at least try it. Tell us about your engine/alternator/airplane/radios etc. Bob . . . ________________________________ Message 9 _____________________________________ Time: 08:40:01 AM PST US From: Ken Ryan Subject: Re: AeroElectric-List: another switch question Thanks guys. I can't see any reason to utilize the NC side in my installation. > I would guess that the n.c. side disconnects > accessories not intended to be on the bus > during cranking. I think all my cars drop > the accessory bus during cranking. > > > Bob . . . > ________________________________ Message 10 ____________________________________ Time: 08:51:22 AM PST US From: Jeff Luckey Subject: Re: AeroElectric-List: Ring Terminals for Tyco LEV100A4ANG What size cable are you using? On Tuesday, March 29, 2016 8:42 AM, Hariharan Gopalan wrote: Hello Group I have been looking for terminal lugs for these contactors without much luc k. These contactors have terminals that take M5 (0.19") bolts and the small est holes on a copper lug that I could find are 5/16". To those who have used these contactors, what lugs did you use? ThanksHari=C2- ________________________________ Message 11 ____________________________________ Time: 09:38:34 AM PST US From: "B Tomm" Subject: AeroElectric-List: Small diameter coax into standard BNC Hi Bob, I am installing a VHF based APRS tracker on the RV7. The kit came with a wimpy antenna not suitable for installing on the outside of the aircraft. Since the APRS out uses 144.XX MHz frequency, I plan on using an old aircraft grade LORAN antenna which is tuned for the same frequency. My question is how to elegantly connect the fine line supplied with the tracker to the BNC of the antenna. The existing feed line is some small diameter I had not anticipated. It's about 1/8" in diameter. Are there BNC made for this (probably are somewhere but I don't really want to wait for an order to come in) or can I make a solder connection between the 1/8" feed line and a short piece of RG400 I have here? Then BNC that as usual. If so, what you recommend this joint look like? Thanks Bevan ________________________________ Message 12 ____________________________________ Time: 09:40:17 AM PST US Subject: Re: AeroElectric-List: Ring Terminals for Tyco LEV100A4ANG From: Hariharan Gopalan #2 and #4 I found a 1/4 lug, but it is still large. Not sure if I can use washers between the terminal and the lug. Thanks Hari On Tue, Mar 29, 2016 at 11:49 AM, Jeff Luckey wrote: > What size cable are you using? > > > On Tuesday, March 29, 2016 8:42 AM, Hariharan Gopalan > wrote: > > > Hello Group > > I have been looking for terminal lugs for these contactors without much > luck. These contactors have terminals that take M5 (0.19") bolts and the > smallest holes on a copper lug that I could find are 5/16". > > To those who have used these contactors, what lugs did you use? > > Thanks > Hari > > ________________________________ Message 13 ____________________________________ Time: 09:42:28 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Ring Terminals for Tyco LEV100A4ANG At 09:56 AM 3/29/2016, you wrote: >Hello Group > >I have been looking for terminal lugs for these contactors without >much luck. These contactors have terminals that take M5 (0.19") >bolts and the smallest holes on a copper lug that I could find are 5/16". > >To those who have used these contactors, what lugs did you use? Order 3/16 terminals and drill them out to M5 http://tinyurl.com/gsccbm8 Bob . . . ________________________________ Message 14 ____________________________________ Time: 09:59:15 AM PST US From: Jared Yates Subject: Re: AeroElectric-List: Small diameter coax into standard BNC Is it the AP510? I'm using one of those with a cheap converter like this: http://amzn.to/1TgJ7Ow It doesn't completely meet your needs as far as having to wait for an order, but with their Prime shipping if you order it now, you'll have a backup on t he way in case you don't like the home brewed solutions as of two days from n ow. > On Mar 29, 2016, at 12:35, B Tomm wrote: > > Hi Bob, > > I am installing a VHF based APRS tracker on the RV7. The kit came with a w impy antenna not suitable for installing on the outside of the aircraft. Si nce the APRS out uses 144.XX MHz frequency, I plan on using an old aircraft g rade LORAN antenna which is tuned for the same frequency. > > My question is how to elegantly connect the fine line supplied with the tr acker to the BNC of the antenna. The existing feed line is some small diamet er I had not anticipated. It's about 1/8" in diameter. Are there BNC made f or this (probably are somewhere but I don't really want to wait for an order to come in) or can I make a solder connection between the 1/8" feed line an d a short piece of RG400 I have here? Then BNC that as usual. If so, what y ou recommend this joint look like? > > Thanks > > Bevan ________________________________ Message 15 ____________________________________ Time: 09:59:40 AM PST US From: Daniel Hooper Subject: Re: AeroElectric-List: Small diameter coax into standard BNC Can you provide a picture or a model number of the tracker you=99re using? > On Mar 29, 2016, at 11:35 AM, B Tomm wrote: > > Hi Bob, > > I am installing a VHF based APRS tracker on the RV7. The kit came with a wimpy antenna not suitable for installing on the outside of the aircraft. Since the APRS out uses 144.XX MHz frequency, I plan on using an old aircraft grade LORAN antenna which is tuned for the same frequency. > > My question is how to elegantly connect the fine line supplied with the tracker to the BNC of the antenna. The existing feed line is some small diameter I had not anticipated. It's about 1/8" in diameter. Are there BNC made for this (probably are somewhere but I don't really want to wait for an order to come in) or can I make a solder connection between the 1/8" feed line and a short piece of RG400 I have here? Then BNC that as usual. If so, what you recommend this joint look like? > > Thanks > > Bevan ________________________________ Message 16 ____________________________________ Time: 10:48:27 AM PST US From: "B Tomm" Subject: RE: AeroElectric-List: Small diameter coax into standard BNC Microtrak RTG from Byonics, see http://www.byonics.com/mt-rtg _____ From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Daniel Hooper Sent: Tuesday, March 29, 2016 9:59 AM Subject: Re: AeroElectric-List: Small diameter coax into standard BNC Can you provide a picture or a model number of the tracker you're using? On Mar 29, 2016, at 11:35 AM, B Tomm wrote: Hi Bob, I am installing a VHF based APRS tracker on the RV7. The kit came with a wimpy antenna not suitable for installing on the outside of the aircraft. Since the APRS out uses 144.XX MHz frequency, I plan on using an old aircraft grade LORAN antenna which is tuned for the same frequency. My question is how to elegantly connect the fine line supplied with the tracker to the BNC of the antenna. The existing feed line is some small diameter I had not anticipated. It's about 1/8" in diameter. Are there BNC made for this (probably are somewhere but I don't really want to wait for an order to come in) or can I make a solder connection between the 1/8" feed line and a short piece of RG400 I have here? Then BNC that as usual. If so, what you recommend this joint look like? Thanks Bevan ________________________________ Message 17 ____________________________________ Time: 11:10:46 AM PST US From: Daniel Hooper Subject: Re: AeroElectric-List: Small diameter coax into standard BNC Could you do an SMA to BNC adapter at the tracker and just hook up there? > On Mar 29, 2016, at 12:47 PM, B Tomm wrote: > > Microtrak RTG from Byonics, see > > http://www.byonics.com/mt-rtg > > > > > > From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Daniel Hooper > Sent: Tuesday, March 29, 2016 9:59 AM > To: aeroelectric-list@matronics.com > Subject: Re: AeroElectric-List: Small diameter coax into standard BNC > > Can you provide a picture or a model number of the tracker you=99r e using? > > >> On Mar 29, 2016, at 11:35 AM, B Tomm > wrote: >> >> Hi Bob, >> >> I am installing a VHF based APRS tracker on the RV7. The kit came with a wimpy antenna not suitable for installing on the outside of the aircraft. Since the APRS out uses 144.XX MHz frequency, I plan on using an old aircraft grade LORAN antenna which is tuned for the same frequency. >> >> My question is how to elegantly connect the fine line supplied with the tracker to the BNC of the antenna. The existing feed line is some small diameter I had not anticipated. It's about 1/8" in diameter. Are there BNC made for this (probably are somewhere but I don't really want to wait for an order to come in) or can I make a solder connection between the 1/8" feed line and a short piece of RG400 I have here? Then BNC that as usual. If so, what you recommend this joint look like? >> >> Thanks >> >> Bevan > ________________________________ Message 18 ____________________________________ Time: 11:19:24 AM PST US Subject: AeroElectric-List: Re: another switch question From: "jonlaury" kenryan wrote: > It's made by Elewind. Here's a link: > > http://www.aliexpress.com/store/product/ELEWIND-22mm-1NO1NC-Momentary-push-button-With-ENGINE-START-symbol-PM221F-11-S-With-ENGINE-START/737142_1719523504.html (http://www.aliexpress.com/store/product/ELEWIND-22mm-1NO1NC-Momentary-push-button-With-ENGINE-START-symbol-PM221F-11-S-With-ENGINE-START/737142_1719523504.html) > > > > > On Mon, Mar 28, 2016 at 6:59 PM, wrote: > > > Hi Ken; > > > > I would like the mfg. and model number of that switch, please. > > Cheers! Stu. > > > > > > > > > > > I have not bought switches from the Elewind company, but I've been using Chinese SS/illuminated switches for years in a product I make. Aside from the robust, functional 'look', there's a huge difference in quality control, mfr to mfr with failure rates of some, over time, as high as 80%. If the aesthetics of the switch are irresistible, then vet the switch company by asking for references for large volume purchasers in the USA for your specific part #. Ask the USA company for switch application and quality control reports for your specific part #. I found a Chinese 'company' with a reasonable failure rate this way. I accept that there will be occasional failures in my non-critical application as a trade-off for pleasing aesthetics, price and feature set. I definitely would not use a Chinese sourced switch in any sort of critical application, and really feel that they have no place in an airplane, if you believe that catastrophes result from a series of bad decisions or small things going wrong. It seems that there are a ton of switch 'companies' in Yueqing all offering the same switches. I suspect that there are a few manufacturers. As this style of switch is offered by US companies (E-Switch, Digikey, Mouser) at 5-8x (or more) the Chinese price, I suspect that large US distributors can demand and get better quality control, but it comes at a price. I can't imagine Digikey tolerating the failure rate that I've seen in some Chinese sources, or even the one that I use, which is pretty low. YMMV John Read this topic online here: http://forums.matronics.com/viewtopic.php?p=454329#454329 ________________________________ Message 19 ____________________________________ Time: 11:19:51 AM PST US From: Subject: AeroElectric-List: 2 pole connector Hi all, I need to duplicate this 2-pole interlocking connector used for the battery maintainer, but don't seem to be able to find an exact match. Can anyone help with a P/N, manufacturer ? Thanks Rumen ________________________________ Message 20 ____________________________________ Time: 11:30:21 AM PST US Subject: Re: AeroElectric-List: Re: another switch question From: John Tipton His would you quantify 'Chinese' compared with US quality (control) Sent from my iPad ----x--O--x---- > On 29 Mar 2016, at 07:17 pm, "jonlaury" wrote: > > > > kenryan wrote: >> It's made by Elewind. Here's a link: >> >> http://www.aliexpress.com/store/product/ELEWIND-22mm-1NO1NC-Momentary-push-button-With-ENGINE-START-symbol-PM221F-11-S-With-ENGINE-START/737142_1719523504.html (http://www.aliexpress.com/store/product/ELEWIND-22mm-1NO1NC-Momentary-push-button-With-ENGINE-START-symbol-PM221F-11-S-With-ENGINE-START/737142_1719523504.html) >> >> >> >> >>> On Mon, Mar 28, 2016 at 6:59 PM, wrote: >>> >>> Hi Ken; >>> >>> I would like the mfg. and model number of that switch, please. >>> Cheers! Stu. > > > I have not bought switches from the Elewind company, but I've been using Chinese SS/illuminated switches for years in a product I make. Aside from the robust, functional 'look', there's a huge difference in quality control, mfr to mfr with failure rates of some, over time, as high as 80%. If the aesthetics of the switch are irresistible, then vet the switch company by asking for references for large volume purchasers in the USA for your specific part #. Ask the USA company for switch application and quality control reports for your specific part #. I found a Chinese 'company' with a reasonable failure rate this way. I accept that there will be occasional failures in my non-critical application as a trade-off for pleasing aesthetics, price and feature set. I definitely would not use a Chinese sourced switch in any sort of critical application, and really feel that they have no place in an airplane, if you believe that catastrophes result from a series of bad decisions or sm! > all things going wrong. > It seems that there are a ton of switch 'companies' in Yueqing all offering the same switches. I suspect that there are a few manufacturers. As this style of switch is offered by US companies (E-Switch, Digikey, Mouser) at 5-8x (or more) the Chinese price, I suspect that large US distributors can demand and get better quality control, but it comes at a price. I can't imagine Digikey tolerating the failure rate that I've seen in some Chinese sources, or even the one that I use, which is pretty low. > > YMMV > John > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=454329#454329 > > > > > > > > > > ________________________________ Message 21 ____________________________________ Time: 11:38:12 AM PST US Subject: Re: AeroElectric-List: another switch question From: John Tipton Hi Bob Looking at this switch, it's a double pole changeover style: if used as a si mple (on)-off (ie: momentary push on - to power the starter contactor) is it a good idea to connect the terminals together, or is one pole OK for a stan dard starter contactor John Sent from my iPad ----x--O--x---- > On 29 Mar 2016, at 04:01 pm, "Robert L. Nuckolls, III" wrote: > > At 05:12 PM 3/28/2016, you wrote: >> I am curious about the function of the pictured "Engine Start" switch. It is a push button switch with four terminals on the back. Two of the termina ls are normally open, two are normally closed. I can see how the normally op en terminals could be used to drive a starter motor relay, but what would th e typical use be for the normally closed terminals on an engine start switch ? See attached pic. >> Content-Type: image/jpeg; name="engine-start-switch.jpg" >> Content-Disposition: attachment; filename="engine-start-switch.jpg" >> X-Attachment-Id: f_imcjusoz0 > > I would guess that the n.c. side disconnects > accessories not intended to be on the bus > during cranking. I think all my cars drop > the accessory bus during cranking. > > > Bob . . . ________________________________ Message 22 ____________________________________ Time: 12:06:40 PM PST US From: ARGOLDMAN@aol.com Subject: Re: AeroElectric-List: 2 pole connector Looks kinda like a molex mate -n-lock. No biggie if you can't find it, just replace both with ones that you can easily get. (see Digi-Key ) Rich In a message dated 3/29/2016 11:21:58 A.M. Pacific Daylight Time, rd2@dejazzd.com writes: Hi all, I need to duplicate this 2-pole interlocking connector used for the battery maintainer, but don't seem to be able to find an exact match. Can anyone help with a P/N, manufacturer ? Thanks Rumen ________________________________ Message 23 ____________________________________ Time: 12:15:49 PM PST US Subject: Re: AeroElectric-List: 2 pole connector From: Rick Beebe I think it's an AMP Universal MATE-N-LOK connector I think the side with the clips is a TE CONNECTIVITY / AMP 1-480698-0 and its mate is TE CONNECTIVITY / AMP 1-480699-0 Check page 37 of http://www.farnell.com/datasheets/1492314.pdf Newark carries them. --Rick On 03/29/2016 02:18 PM, rd2@dejazzd.com wrote: > Hi all, > I need to duplicate this 2-pole interlocking connector used for the battery maintainer, but don't seem to be able to find an exact match. Can anyone help with a P/N, manufacturer ? > Thanks > Rumen > ________________________________ Message 24 ____________________________________ Time: 12:22:55 PM PST US From: Subject: Re: AeroElectric-List: 2 pole connector Thanks. Looked up molex and amp, couldn't find an exact match. Replacing would be more involved; that's what I was trying to avoid. ---- ARGOLDMAN@aol.com wrote: ============ Looks kinda like a molex mate -n-lock. No biggie if you can't find it, just replace both with ones that you can easily get. (see Digi-Key ) Rich In a message dated 3/29/2016 11:21:58 A.M. Pacific Daylight Time, rd2@dejazzd.com writes: Hi all, I need to duplicate this 2-pole interlocking connector used for the battery maintainer, but don't seem to be able to find an exact match. Can anyone help with a P/N, manufacturer ? Thanks Rumen ________________________________ Message 25 ____________________________________ Time: 12:50:51 PM PST US Subject: AeroElectric-List: Coax Cable Connector Question From: Chris Mullins Coax Cable Connector Question I am currently planning coax routing etc for my ADSB and COM antennae. I'd appreciate the groups opinions regarding the best connectors. I saved the quote below from an AEROlectrics column by Jim Weir in June 2015 Kitplanes magazine. Regarding BNC connectors : "The ones that last are not compression (solderless) connectors, but good old UG88 (male) and UG89 (female) solder-on connectors. These are solder-the-pin-on connectors and have a lifetime measured in dozens of years. The solderless connectors are what we call junk and i guarantee that within a year or two, they'll give you fits". Does this opinion reflect the experience of the group? Thanks to Bob and to you all who participate in this very helpful group. Chris M This email has been sent from a virus-free computer protected by Avast. www.avast.com <#DDB4FAA8-2DD7-40BB-A1B8-4E2AA1F9FDF2> ________________________________ Message 26 ____________________________________ Time: 01:12:59 PM PST US From: Subject: Re: AeroElectric-List: 2 pole connector Thanks a lot, this seems to be the one; a number of vendors carry that p/n, I am placing an order. RD do not archive ---- Rick Beebe wrote: ============ I think it's an AMP Universal MATE-N-LOK connector I think the side with the clips is a TE CONNECTIVITY / AMP 1-480698-0 and its mate is TE CONNECTIVITY / AMP 1-480699-0 Check page 37 of http://www.farnell.com/datasheets/1492314.pdf Newark carries them. --Rick On 03/29/2016 02:18 PM, rd2@dejazzd.com wrote: > Hi all, > I need to duplicate this 2-pole interlocking connector used for the battery maintainer, but don't seem to be able to find an exact match. Can anyone help with a P/N, manufacturer ? > Thanks > Rumen > ________________________________ Message 27 ____________________________________ Time: 01:38:02 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Coax Cable Connector Question At 02:49 PM 3/29/2016, you wrote: >Coax Cable Connector Question > >I am currently planning coax routing etc for my ADSB and COM antennae. >I'd appreciate the groups opinions regarding the best connectors. > >I saved the quote below from an AEROlectrics column by Jim Weir in >June 2015 Kitplanes magazine. > >Regarding BNC connectors : >"The ones that last are not compression (solderless) connectors, but >good old UG88 (male) and UG89 (female) solder-on connectors. These >are solder-the-pin-on connectors and have a lifetime measured in >dozens of years. The solderless connectors are what we call junk and >i guarantee that within a year or two, they'll give you fits". > >Does this opinion reflect the experience of the group? > >Thanks to Bob and to you all who participate in this very helpful group. Agree about the 'twist on' connectors . . . UG-88 are good but I've not used one in a new installation in about 40 years. In fact, I think I threw some out about 10 years ago . . . not useless but just a pain in the a## compared to a modern crimp on. See http://tinyurl.com/hulty38 and http://tinyurl.com/j9pdg2p and http://tinyurl.com/j6ghop2 Bob . . . ________________________________ Message 28 ____________________________________ Time: 02:43:12 PM PST US From: "David Lloyd" Subject: Re: AeroElectric-List: 2 pole connector . . . Hmmm. . . that is an odd one. . Might be easier to cut it off and connect a new, match pair that is easy to find if needed again. . . ------------------------------------------------------------------------------------------------------------- ----- Original Message ----- From: Sent: Tuesday, March 29, 2016 11:18 AM Subject: AeroElectric-List: 2 pole connector > Hi all, > I need to duplicate this 2-pole interlocking connector used for the > battery maintainer, but don't seem to be able to find an exact match. Can > anyone help with a P/N, manufacturer ? > Thanks > Rumen --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus ________________________________ Message 29 ____________________________________ Time: 03:09:29 PM PST US From: DeWitt Whittington Subject: Re: AeroElectric-List: How do I stop audio hash noise generated by a new set of NavStrobes? Well, Bob and all, I found the proper answer to my "hash" problem! Take a look at this Aircraft Spruce page: https://www.aircraftspruce.com/catalog/elpages/navstrobesextant.php?clickke y=1044728 And more importantly, note the statement in bold print: *Latest generation has eliminated radio noise, is brighter, and lasts longer! * Well, looks like Chris Winter, (613) 285-0911, , the inventor and the man I spoke to in person before buying his creation at Oshkosh 2015, has come up with a fix at the same price as the one which has given us nothing but grief. During the past year I've spoken to him twice about the nasty hash in our headset problem which made the unit unusable for us in strobe mode, but never received a call or email indicating he had engineered out the noise. I'll be calling him to see if he can upgrade the set of lights he sold me actually work. By the way, the price has not changed from his noisy LED nav lights to what he now claims don't have the radio noise. Dee DeWitt (Dee) Whittington Richmond, VA 804-677-4849 iPhone 804-358-4333 Home On Tue, Mar 29, 2016 at 11:22 AM, Robert L. Nuckolls, III < nuckolls.bob@aeroelectric.com> wrote: > At 09:52 PM 3/27/2016, you wrote: > > dee.whittington@gmail.com> > > Hello, Bob, and all you AeroElectric forum participants. This is the firs t > time I=C3=A2=82=AC=84=A2ve posted in years, but I=C3=A2=82=AC =84=A2ve got a problem I can=C3=A2=82=AC=84=A2t solve. At > Oshkosh 2015 I bought a set of the NavStrob LED nav/position light units. > They directly replace the red and green wingtip nave bulbs, and the white > rear position light. I cleaned out the sockets for all three locations an d > sprayed them with CorrosionX. Then inserted the NavStrobe units. When you > turn on the Nav light switch once, all three burn with a steady light. Fl ip > them off, and turn on again, and they flash like strobes. Slick. But, in my > 1975 172L, when we turn on the COM radios, then turn on the strobes, ther e > is a very unpleasant =C3=A2=82=AC=C5=93hash=C3=A2=82=AC noise when the VOX gate opens as when you > speak or a transmission comes in from someone else. > > The designer of the NavStrobe unit suggests cleaning all the light socket s > again. And if that doesn=C3=A2=82=AC=84=A2t get rid of the hash noi se (and it didn=C3=A2=82=AC=84=A2t) > install a choke coil. > > So, any suggestions? And what size or type of choke should I buy and wher e > do I install it? All suggestions welcome. > > > Are they ever supposed to flash? > > These devices SHOULD contain little DC/DC constant > current converters that are a special form of switchmode > power supply. Some years ago I crafted and sold a > filter assembly to accept the DC/DC converter recommended > for popular DIY nav light project. I sold several > dozens of these assemblies with no complaints/returns so > my sense is that they performed as adverstised to > stand off the VHF radiated noise from the Luxdrive > module. > > > [image: http://www.aeroelectric.com/Catalog/AEC/9051/AEC9051.jpg] > > You MIGHT be experiencing a similar condition. > > Do I presume correctly that you're working with devices that look like > this? > > [image: Emacs!] > > Kinda cute . . . but not very reassuring from the perspective > of design for EMC. Minimized radiation from high frequency > power supplies BEGINS with tightly clustered components > with short leads to minimize the radio frequency radiation > footprint. That sprinkling of parts gives pause for doubts. > > If your lamps are different, shoot me pictures or links and > a link to the installation instructions. We may have to > conduct some experiments to identify the noise propagation > mode . . . Might have you send me one to bench check. I just > bought a spectrum analyzer that would help identify the device's > un-neighborly behaviors. > > > Bob . . . > ________________________________ Message 30 ____________________________________ Time: 04:44:39 PM PST US From: Subject: Re: AeroElectric-List: 2 pole connector Already ordered a few AMP/TE ones that were suggested, due to closest resemblance. Hope they are the same. If not, will just rewire both sides. RD do not archive ---- David Lloyd wrote: ============ . . . Hmmm. . . that is an odd one. . Might be easier to cut it off and connect a new, match pair that is easy to find if needed again. . . ------------------------------------------------------------------------------------------------------------- ----- Original Message ----- From: Sent: Tuesday, March 29, 2016 11:18 AM Subject: AeroElectric-List: 2 pole connector > Hi all, > I need to duplicate this 2-pole interlocking connector used for the > battery maintainer, but don't seem to be able to find an exact match. Can > anyone help with a P/N, manufacturer ? > Thanks > Rumen --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus ________________________________ Message 31 ____________________________________ Time: 05:00:16 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Coax Cable Connector Question At 02:49 PM 3/29/2016, you wrote: >Coax Cable Connector Question > >I am currently planning coax routing etc for my ADSB and COM antennae. >I'd appreciate the groups opinions regarding the best connectors. > >I saved the quote below from an AEROlectrics column by Jim Weir in >June 2015 Kitplanes magazine. > >Regarding BNC connectors : >"The ones that last are not compression (solderless) connectors, but >good old UG88 (male) and UG89 (female) solder-on connectors. These >are solder-the-pin-on connectors and have a lifetime measured in >dozens of years. The solderless connectors are what we call junk and >i guarantee that within a year or two, they'll give you fits". > >Does this opinion reflect the experience of the group? > >Thanks to Bob and to you all who participate in this very helpful group. Agree about the 'twist on' connectors . . . UG-88 are good but I've not used one in a new installation in about 40 years. In fact, I think I threw some out about 10 years ago . . . not useless but just a pain in the a## compared to a modern crimp on. See http://tinyurl.com/hulty38 and http://tinyurl.com/j9pdg2p and http://tinyurl.com/j6ghop2 Bob . . . ________________________________ Message 32 ____________________________________ Time: 05:05:10 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: How do I stop audio hash noise generated by a new set of NavStrobes? At 05:07 PM 3/29/2016, you wrote: >Well, Bob and all, I found the proper answer to >my "hash" problem! Take a look at this Aircraft Spruce page: > >https://www.aircraftspruce.com/catalog/elpages/navstrobesextant .php?clickkey=1044728 > >And more importantly, note the statement in bold >print:=C2 Latest generation has eliminated radio >noise, is brighter, and lasts longer!=C2 > >Well, looks like Chris Winter,=C2 (613) 285-0911, ><navstrobe@gmail.com>, >the inventor and the man I spoke to in person >before buying his creation at Oshkosh 2015, has >come up with a fix at the same price as the one >which has given us nothing but grief. During the >past year I've spoken to him twice about the >nasty hash in our headset problem which made the >unit=C2 unusable=C2 for us in strobe mode, but never >received a call or email indicating he had >engineered out the noise. I'll be calling him to >see if he can upgrade the set of lights he sold >me actually work. By the way, the price has not >changed from his noisy LED nav lights to what he >now claims don't have the radio noise. Good deal . . . Don't be so much a stranger to the List my friend. I don't think I've seen you since OSH 2007. I've often wondered how things are going in your hangar. Bob . . . ------------------------------------------------------------------------------------- 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.