---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Wed 12/26/12: 11 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:24 AM - Re: Switches all upside-down... (racerjerry) 2. 05:22 AM - Re: Switches all upside-down... (BobsV35B@aol.com) 3. 07:19 AM - Re: Carbon Pile battery tester (Bill Watson) 4. 07:23 AM - Re: Carbon Pile battery tester (Bill Watson) 5. 08:37 AM - Re: Switches all upside-down... (Tim Andres) 6. 08:51 AM - Re: Switches all upside-down... (Vern Little) 7. 08:52 AM - Re: Switches all upside-down... (jonlaury) 8. 08:53 AM - Re: Switches all upside-down... (Richard Girard) 9. 02:08 PM - Re: RF interference on GRT fuel pressure with PTT (ChangDriver) 10. 02:23 PM - Re: Re: RF interference on GRT fuel pressure with PTT (Tim Andres) 11. 10:37 PM - Re: Switches all upside-down... (John MacCallum) ________________________________ Message 1 _____________________________________ Time: 04:24:54 AM PST US Subject: AeroElectric-List: Re: Switches all upside-down... From: "racerjerry" I understand your grief. Shhh.., dont tell anyone else of your mistake. Go ahead and install the switches without the keyed washer; just make sure that you use a star washer on the switch mounting stem, which will keep them from loosening. -------- Jerry King Read this topic online here: http://forums.matronics.com/viewtopic.php?p=390957#390957 ________________________________ Message 2 _____________________________________ Time: 05:22:05 AM PST US From: BobsV35B@aol.com Subject: Re: AeroElectric-List: Switches all upside-down... Good Morning Eric and Michael, Is the panel installed yet? How thick is the panel? Did you drill the holes all the way through? Front or back? One possibility is to just drill new holes. The holes will show no more without the tang in them than they would have with the tang in the hole. If the panel is thick enough, I drill the holes on the back side and not all the way through. I also drill them top and bottom so that I can put in the switch either way. Why do I do that? Because I have been in the same boat you are when I discovered that the manufacturer of a switch or CB I wanted to install used a different protocol than I had planned for. No idea at all as to how to find the upside down washers, but they ARE out there. In any case, it is no disaster. The switches will work very well with no tang on the washer at all. Just make sure they are straight when first installed and it is highly unlikely they will ever come loose. I have done it that way when I did not want to take the time to utilize the keyway and I cannot recall any of the switches loosening enough to turn. Between the wires and being closely spaced, they are unlikely to turn even if they get loose! Happy Skies, Old Bob In a message dated 12/26/2012 1:25:12 A.M. Central Standard Time, edpav8r@yahoo.com writes: --> AeroElectric-List message posted by: Eric Page Can the key be bent 180 deg to face the opposite side of the washer without breaking off? If it makes you feel any better, many airliners have their switches mounted the way you've done yours. Of course, they're on the overhead panel, so forward is on and aft is off... Eric On Dec 25, 2012, at 11:43 PM, Michael Burbidge wrote: > > I just mounted my instruments and switches in my beautifully painted panel. To my dismay I discovered that when I cut my panel, many months ago, I drilled the key hole for all my B&C switches on the top instead of the bottom of the main hole. This means that all my switches are upside down. Off is up and on is down. ARG! > > I'm thinking I'm going to have to fill the key holes with putty and drill new ones on the bottom. But I thought I'd check real quick to see if there is a alternate keyed washer that would allow be to rotate the switches 180 degrees. > > Thanks for any suggestions! > Michael ________________________________ Message 3 _____________________________________ Time: 07:19:57 AM PST US From: Bill Watson Subject: Re: AeroElectric-List: Carbon Pile battery tester Bob, I've been staring at this thing for a couple of days and realize why I'm enjoying it so much. My Dad was an electronics hobbyist and used to get a lot of surplus electrical boards and boxes to scavenge parts from. He would give a piece or 2 to my brother and I to dissassemble.... sometimes to get a particular component, sometimes to just keep our busy hands out of the way. I know that some parts were just so interesting that he'd get them just to look at and study. This would have been one of those. Thanks Bill On 12/24/2012 10:48 AM, Robert L. Nuckolls, > It's one of my favorite examples of creativity in > electronic controls from the era of copper, steel, rubber > and Bakelite. > > http://tinyurl.com/d9nyju4 > > This control device came out of a steam turbine > power plant, one of many shepherded by one of > several favorite uncles. Throughout this assembly > one can identify a/d converters, d/a converters and control > logic that presided over line power quality for > hundreds of thousands of Kansans. Uncle Bill received > this piece with a plaque on it commemorating his > decades of service to the only job he ever held after > graduating college. > > I'm pleased that he saw fit to pass it on to me. ________________________________ Message 4 _____________________________________ Time: 07:23:00 AM PST US From: Bill Watson Subject: Re: AeroElectric-List: Carbon Pile battery tester On 12/23/2012 9:37 PM, Paul Millner wrote: > > > On 12/23/2012 4:25 PM, Bill Watson wrote: >> If I screw the big knob down and shake things a bit, I can get the >> stack of carbon plates lined up and it seems that increased >> resistance results from placing more pressure on the stack. >> >> Does that sound right? > > Don't know about your unit, but traditional carbon piles *decrease* > resistance as you tighten them up, pushing the pack into better > contact, or decreasing the total electron path length, depending on > how you'd like to think about it. Relaxing pressure *increases* > resistance, as the carbon gets further away from each other, at least > microscopically. Well, this one definitely seems to press the carbon discs together to increase resistance. Your explanation makes more sense to me. What I'm seeing in this box makes none, but no matter. As I mentioned separately, it's working fine now. Nice low cost box that seems to do the job. Thanks. > > At least, our 1937 2400 volt AC generators' excitation current control > widgets work that way... technology may have marched on in the interim. > > Paul ________________________________ Message 5 _____________________________________ Time: 08:37:17 AM PST US Subject: Re: AeroElectric-List: Switches all upside-down... From: Tim Andres Hi Michael, I had the same issue, but my tabs were CNC cut into the panel. One would think the lock tab goes up with the switch off and down and that's not always the case. I was able to select different model switches from B&C and correct it. If you study the "all about switches" article Bob has online or in the manual you can probably work it out with a different switch. Another option is drill new holes, they do not have to go all the way thru. If you make a drill stop or use a drill press you can make new blind holes for the tabs. Good luck Tim Sent from my iPad On Dec 25, 2012, at 10:43 PM, Michael Burbidge wrote: > > I just mounted my instruments and switches in my beautifully painted panel. To my dismay I discovered that when I cut my panel, many months ago, I drilled the key hole for all my B&C switches on the top instead of the bottom of the main hole. This means that all my switches are upside down. Off is up and on is down. ARG! > > I'm thinking I'm going to have to fill the key holes with putty and drill new ones on the bottom. But I thought I'd check real quick to see if there is a alternate keyed washer that would allow be to rotate the switches 180 degrees. > > Thanks for any suggestions! > Michael- > > > > ________________________________ Message 6 _____________________________________ Time: 08:51:20 AM PST US From: "Vern Little" Subject: Re: AeroElectric-List: Switches all upside-down... Make a .040 backing plate drilled for the switch holes and the key holes in the correct position. Mount this backing plate between the panel and the switches. If the plate is designed to hold more than 1 switch, it will serve to provide the anti-rotation function. Alternatively, the SPDT switches that B&C will all work either way, simply by using the secondary poles on the switch. Wire the power to the center pole and the load to the bottom pole. This may not work for some of the other switches, such as the ON-OFF-(ON) switches etc. Vern -----Original Message----- From: Michael Burbidge Sent: Tuesday, December 25, 2012 10:43 PM Subject: AeroElectric-List: Switches all upside-down... I just mounted my instruments and switches in my beautifully painted panel. To my dismay I discovered that when I cut my panel, many months ago, I drilled the key hole for all my B&C switches on the top instead of the bottom of the main hole. This means that all my switches are upside down. Off is up and on is down. ARG! I'm thinking I'm going to have to fill the key holes with putty and drill new ones on the bottom. But I thought I'd check real quick to see if there is a alternate keyed washer that would allow be to rotate the switches 180 degrees. Thanks for any suggestions! Michael- ----- No virus found in this message. Checked by AVG - www.avg.com ________________________________ Message 7 _____________________________________ Time: 08:52:42 AM PST US Subject: AeroElectric-List: Re: Switches all upside-down... From: "jonlaury" Don't feel too bad. The first NACA duct I cut into a full-length fuselage aluminm skin I carefully did backward with the wide end forward. Not knowing how they worked, I just assumed that the wide end should face the slip stream where it could gather more air :? Couldn't face the idea of tossing all that carefully drilled aluminum, so I scribed the errant cut-out on another piece of sheet, cut it out, and bonded it to a backing plate. It fit into the hole perfectly and flush rivets through the backing plate made it nice and tidy and it looked almost intentional on the polished skin. It was amusing to see experienced builders touch and puzzle over the patch. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=390972#390972 ________________________________ Message 8 _____________________________________ Time: 08:53:46 AM PST US Subject: Re: AeroElectric-List: Switches all upside-down... From: Richard Girard Michael, I had the same experience last summer. I used Radio Shack SPST switches for the mags on a Rotax two stroke engine and found they were backward to the switches I bought from B & C. I took the switches apart and reversed the key slot location that way. Worked fine and was a relatively quick fix. Rick Girard On Wed, Dec 26, 2012 at 10:36 AM, Tim Andres wrote: > > > > Hi Michael, I had the same issue, but my tabs were CNC cut into the panel. > One would think the lock tab goes up with the switch off and down and > that's not always the case. I was able to select different model switches > from B&C and correct it. If you study the "all about switches" article Bob > has online or in the manual you can probably work it out with a different > switch. > Another option is drill new holes, they do not have to go all the way > thru. If you make a drill stop or use a drill press you can make new blind > holes for the tabs. > Good luck > Tim > > > Sent from my iPad > > On Dec 25, 2012, at 10:43 PM, Michael Burbidge wrote: > > mburbidg@gmail.com> > > > > I just mounted my instruments and switches in my beautifully painted > panel. To my dismay I discovered that when I cut my panel, many months ago, > I drilled the key hole for all my B&C switches on the top instead of the > bottom of the main hole. This means that all my switches are upside down. > Off is up and on is down. ARG! > > > > I'm thinking I'm going to have to fill the key holes with putty and > drill new ones on the bottom. But I thought I'd check real quick to see if > there is a alternate keyed washer that would allow be to rotate the > switches 180 degrees. > > > > Thanks for any suggestions! > > Michael- > > > > > > > > > > -- Zulu Delta Mk IIIC Thanks, Homer GBYM It isn't necessary to have relatives in Kansas City in order to be unhappy. - Groucho Marx ________________________________ Message 9 _____________________________________ Time: 02:08:37 PM PST US Subject: AeroElectric-List: Re: RF interference on GRT fuel pressure with PTT From: "ChangDriver" Forget about trying to put the capacitor on the line and solder to ground and just get one of these noise supression connector adapters. http://www.camiresearch.com/connector_protector.html Way simpler and it puts EMI supression on each pin! Read this topic online here: http://forums.matronics.com/viewtopic.php?p=391000#391000 ________________________________ Message 10 ____________________________________ Time: 02:23:24 PM PST US From: Tim Andres Subject: Re: AeroElectric-List: Re: RF interference on GRT fuel pressure with PTT Wow cool idea. Ill be the guinea pig and report back when its see if it fixes the problem. Tim ________________________________ From: ChangDriver Sent: Wed, December 26, 2012 2:19:18 PM Subject: AeroElectric-List: Re: RF interference on GRT fuel pressure with PTT Forget about trying to put the capacitor on the line and solder to ground and just get one of these noise supression connector adapters. http://www.camiresearch.com/connector_protector.html Way simpler and it puts EMI supression on each pin! Read this topic online here: http://forums.matronics.com/viewtopic.php?p=391000#391000 ________________________________ Message 11 ____________________________________ Time: 10:37:11 PM PST US From: John MacCallum Subject: RE: AeroElectric-List: Switches all upside-down... Don't worry as the active terminal is the one opposite to the Switch Toggle just swap the Terminals around Bottom to Top on Double Throw Switches. On Single pole single throw it may be a bit a problem but you could make a small doubler to take the tag in the opposite sense and just bond the doubler to the Back of the panel. Cheers John MacCallum VH-DUU RV 10 # 41016 -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Michael Burbidge Sent: Wednesday, 26 December 2012 5:44 PM Subject: AeroElectric-List: Switches all upside-down... --> I just mounted my instruments and switches in my beautifully painted panel. To my dismay I discovered that when I cut my panel, many months ago, I drilled the key hole for all my B&C switches on the top instead of the bottom of the main hole. This means that all my switches are upside down. Off is up and on is down. ARG! I'm thinking I'm going to have to fill the key holes with putty and drill new ones on the bottom. But I thought I'd check real quick to see if there is a alternate keyed washer that would allow be to rotate the switches 180 degrees. Thanks for any suggestions! Michael- ------------------------------------------------------------------------------------- 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.