---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Thu 12/27/12: 7 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 10:04 AM - Re: Switches all upside-down... (Lynn Cole) 2. 10:21 AM - Re: Switches all upside-down... (Michael Burbidge) 3. 10:59 AM - Re: Switches all upside-down... (William Schertz) 4. 11:36 AM - Re: RF interference on GRT fuel pressure with PTTRF interference on GRT fuel pressure with PTT (Fred Stucklen) 5. 02:45 PM - Re: Re: RF interference on GRT fuel pressure with PTTRF interference on GRT fuel pressure with PTT (Tim Andres) 6. 04:07 PM - Re: Switches all upside-down... (Jared Yates) 7. 09:14 PM - Re: Switches all upside-down... (hooverra) ________________________________ Message 1 _____________________________________ Time: 10:04:20 AM PST US From: Lynn Cole Subject: Re: AeroElectric-List: Switches all upside-down... All of the switches on my 1946 Cessna 140 are upside down. Apparently they were made that way at the factory. I just try to get used to it, but given my druthers I would prefer having them mounted in the US convention. I try to check the switches carefully after flying, but on a few occasions I have left the master on. ARRGH! I like the idea of drilling key holes top and bottom on the panel. As others have pointed out, you can drill blind holes from the back on a thick panel. On a thin panel, you can drill the holes all the way through and use a thin stainless--steel washer (standard electrical hardware) to cover the holes and protect the panel when you use a wrench to tighten the nut. ----- Lynn Cole LynnCole@foxvalley.net On Dec 26, 2012, at 12:43 AM, 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 2 _____________________________________ Time: 10:21:18 AM PST US From: Michael Burbidge Subject: Re: AeroElectric-List: Switches all upside-down... Thanks for all the replies. Lots of good ideas. In the end, I decided that I wanted to fly sooner rather than later. So I just drilled key holes in the bottom also. Only about half the hole shows on the top. Like you mention, if I find the right washer, I can probably cover the entire hole. Be there a next time, I will blind drill the holes on the bottom in the back. Michael- On Dec 27, 2012, at 10:03 AM, Lynn Cole wrote: > All of the switches on my 1946 Cessna 140 are upside down. Apparently they were made that way at the factory. I just try to get used to it, but given my druthers I would prefer having them mounted in the US convention. I try to check the switches carefully after flying, but on a few occasions I have left the master on. ARRGH! > > I like the idea of drilling key holes top and bottom on the panel. As others have pointed out, you can drill blind holes from the back on a thick panel. On a thin panel, you can drill the holes all the way through and use a thin stainless--steel washer (standard electrical hardware) to cover the holes and protect the panel when you use a wrench to tighten the nut. > ----- > Lynn Cole > LynnCole@foxvalley.net > > > On Dec 26, 2012, at 12:43 AM, 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 (And Get AeroElectric http://www.matronics.com/co -Matt Dralle, List - The --> http://www.m &n======== ==== >> >> >> > > > > ________________________________ Message 3 _____________________________________ Time: 10:59:18 AM PST US From: "William Schertz" Subject: Re: AeroElectric-List: Switches all upside-down... Lynn, I used the =98thin .035-.065=99 strip behind my switches to allow the tabs to go in the correct place for switch orientation. As long as you have two or more switches side by side, you can avoid rotation. Easier than drilling into the panel itself Bill Schertz From: Lynn Cole Sent: Thursday, December 27, 2012 12:03 PM Subject: Re: AeroElectric-List: Switches all upside-down... All of the switches on my 1946 Cessna 140 are upside down. Apparently they were made that way at the factory. I just try to get used to it, but given my druthers I would prefer having them mounted in the US convention. I try to check the switches carefully after flying, but on a few occasions I have left the master on. ARRGH! I like the idea of drilling key holes top and bottom on the panel. As others have pointed out, you can drill blind holes from the back on a thick panel. On a thin panel, you can drill the holes all the way through and use a thin stainless--steel washer (standard electrical hardware) to cover the holes and protect the panel when you use a wrench to tighten the nut. ----- Lynn Cole LynnCole@foxvalley.net On Dec 26, 2012, at 12:43 AM, 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 (And Get AeroElectric http://www.matronics.com/co -Matt Dralle, List - The --> http://www.m &n============ ________________________________ Message 4 _____________________________________ Time: 11:36:55 AM PST US From: "Fred Stucklen" Subject: AeroElectric-List: Re: RF interference on GRT fuel pressure with PTTRF interference on GRT fuel pressure with PTT I just put in an order for their evaluation kit for four DB25 EMC units (Item # 903C). I've been having problems with RFI getting into the fuel pressure circuit, causing fuel pressure warnings on the EFIS engine page. I'll put this unit onto the DB-25 on the EIS and see if it solves the issue (or makes it worst). It can't hurt, but may not eliminate the issue is RFI getting into the fuel pressure sending unit, causing it to send the wrong information. Only a cap across it's leads would then eliminate the problem... Fred Stucklen RV-7A N924RV 800+ Hrs Triple GRT EFIS GRT EIS Time: 02:23:24 PM PST US From: Tim Andres Subject: Re: RF interference on GRT fuel pressure with PTT Wow cool idea. I'll be the guinea pig and report back when it's 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! ________________________________ Message 5 _____________________________________ Time: 02:45:41 PM PST US Subject: Re: AeroElectric-List: Re: RF interference on GRT fuel pressure with PTTRF interference on GRT fuel pressure with PTT From: Tim Andres Thanks Fred, I had not gotten around to ordering yet as I recall one DB was m ale pin and the other female. Do you plan to put one on each connector or ju st the one that has the fuel pres. sensor? Tim Sent from my iPad On Dec 27, 2012, at 11:35 AM, "Fred Stucklen" wrote: > I just put in an order for their evaluation kit for four DB25 EMC units (I tem # 903C). I=99ve been having problems with RFI getting into the fue l pressure circuit, causing fuel pressure warnings on the EFIS engine page. I =99ll put this unit onto the DB-25 on the EIS and see if it solves the issue (or makes it worst). It can=99t hurt, but may not eliminate the issue is RFI getting into the fuel pressure sending unit, causing it to sen d the wrong information. Only a cap across it=99s leads would then eli minate the problem.. > > Fred Stucklen > RV-7A N924RV 800+ Hrs > Triple GRT EFIS > GRT EIS > > > Time: > 02:23:24 PM PST US > From: > Tim Andres > Subject: > Re: RF interference on GRT fuel pressure with PTT > > Wow cool idea. I=99ll be the guinea pig and report back when i t=99s 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 g round 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! > > > > ========================== ========= ========================== ========= ========================== ========= ========================== ========= > ________________________________ Message 6 _____________________________________ Time: 04:07:37 PM PST US Subject: Re: AeroElectric-List: Switches all upside-down... From: Jared Yates Contrary to a widely held belief among many homebuilders and most TC manufac turers, my opinion is that airplanes need not make excuses for being airplan es. Sometimes there will be holes, wires, hoses, or hardware that will be vi sible- this is because simplicity and light weight matter much more in airpl anes than they do in luxury cars. Being in the air with an extra lightening h ole sounds much better than being on the ground with a panel that most folks wouldn't be able to differentiate from the other without help. I think you m ade a great choice! On Dec 27, 2012, at 13:20, Michael Burbidge wrote: > Thanks for all the replies. Lots of good ideas. In the end, I decided that I wanted to fly sooner rather than later. So I just drilled key holes in th e bottom also. Only about half the hole shows on the top. Like you mention, i f I find the right washer, I can probably cover the entire hole. > > Be there a next time, I will blind drill the holes on the bottom in the ba ck. > > Michael- > > On Dec 27, 2012, at 10:03 AM, Lynn Cole wrote: > >> All of the switches on my 1946 Cessna 140 are upside down. Apparently th ey were made that way at the factory. I just try to get used to it, but giv en my druthers I would prefer having them mounted in the US convention. I t ry to check the switches carefully after flying, but on a few occasions I ha ve left the master on. ARRGH! >> >> I like the idea of drilling key holes top and bottom on the panel. As ot hers have pointed out, you can drill blind holes from the back on a thick pa nel. On a thin panel, you can drill the holes all the way through and use a thin stainless--steel washer (standard electrical hardware) to cover the ho les and protect the panel when you use a wrench to tighten the nut. >> ----- >> Lynn Cole >> LynnCole@foxvalley.net >> >> >> On Dec 26, 2012, at 12:43 AM, Michael Burbidge wrote: >> l.com> >>> >>> I just mounted my instruments and switches in my beautifully painted pan el. To my dismay I discovered that when I cut my panel, many months ago, I d rilled 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 u p and on is down. ARG! >>> >>> I'm thinking I'm going to have to fill the key holes with putty and dril l 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 d egrees. >>> >>> Thanks for any (And Get AeroElectric http://www.matronics.com/ co -Matt Dralle, List - The --> http: //www.m &n============ >>> >>> >>> >> >> >> >> face="courier new,courier">www.aeroelectric.com >> href="http://www.buildersbooks.com/">www.buildersbooks.com >> href="http://www.homebuilthelp.com/">www.homebuilthelp.com >> href="http://www.matronics.com/contribution">http://www.matronics.com/c ontribution >> href="http://www.matronics.com/Navigator?AeroElectric-List">http://www. matronics.com/Navigator?AeroElectric-List >> href="http://forums.matronics.com/">http://forums.matronics.com >> > > > ========================== ========= ========================== ========= ========================== ========= ========================== ========= > ________________________________ Message 7 _____________________________________ Time: 09:14:40 PM PST US Subject: AeroElectric-List: Re: Switches all upside-down... From: "hooverra" If the switches are in a row or several rows drill a plate to go behind the panel as thick as the tang on the anti turn washer. In this plate punch the index holes in the correct location. This is then interposed between the switch with washer and the back of the panel. On my RV7 all of the switches are mounted to a u channel that is fastened to the panel with 4 screws and spacers. Only the end of the threaded switch bushing goes through the panel and remains flush with the panel. The panel is removable with a few connectors and removing the switch mounting screws. The switches remain connected. -------- Ralph & Laura Hoover RV7A N527LR Read this topic online here: http://forums.matronics.com/viewtopic.php?p=391067#391067 ------------------------------------------------------------------------------------- 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.