---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Thu 08/29/13: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:27 AM - Re: Re: led trim display (bob noffs) 2. 05:20 AM - Re: Re: led trim display (rparigor@suffolk.lib.ny.us) 3. 01:08 PM - Re: Re: led trim display (bob noffs) 4. 01:30 PM - How to lose both ignition systems? (Builder_Bill) 5. 07:09 PM - Re: How to lose both ignition systems? (Robert L. Nuckolls, III) ________________________________ Message 1 _____________________________________ Time: 12:27:58 AM PST US Subject: Re: AeroElectric-List: Re: led trim display From: bob noffs thanks for the replys. all in all i guess it is good news compared to improper wiring. bob noffs On Wed, Aug 28, 2013 at 10:29 AM, Eric M. Jones wrote: > emjones@charter.net> > > I like Ray Allen stuff, but the RP3 indicator and the trim boxes have > limitations. One of them is that the full-scale voltage returned from the > trim box pot is 1.2V. This is an issue when the wiring is close to the > transmitter because the voltages are way down in the RFI/EMI mud. The other > is the nature of the LED bar graph, which is an old design that can only > get so bright, and updates to the design, like an LCD aren't happening. > > See attached schematic. > > My approach was to eliminate the indicator and turn the "trim box" into a > true servo. I designed the TSCMR, true servo control to do that. > Alternatively, I designed a more advanced version, BUT DON'T SELL IT, that > uses 12V full-scale voltage at the trim box potentiometer, the bar graph, > an "In Transit" led, a "locked" led and a setting knob. > > -------- > Eric M. Jones > www.PerihelionDesign.com > 113 Brentwood Drive > Southbridge, MA 01550 > (508) 764-2072 > emjones(at)charter.net > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=407633#407633 > > > Attachments: > > http://forums.matronics.com//files/tscmr_installation_manual_416.pdf > > http://forums.matronics.com//files/rac_trim_and_trim_indicator_schematics_433.pdf > > ________________________________ Message 2 _____________________________________ Time: 05:20:36 AM PST US Subject: Re: AeroElectric-List: Re: led trim display From: rparigor@suffolk.lib.ny.us Hi Bob The Europa that I am building uses a Ray Allen for pitch trimming. I have read over the years that some folks have the same problem you are experiencing when transmitting. It seems that the greatest success is keeping the wire run as far from antenna and associated wires as you can. I installed 5 conductor twisted with shielding from ACS: http://www.europaowners.org/main.php?g2_itemId=30484 Ron Parigoris ________________________________ Message 3 _____________________________________ Time: 01:08:52 PM PST US Subject: Re: AeroElectric-List: Re: led trim display From: bob noffs it is a very minor thing. if fact i saw it 6 months ago and it wasn't until last week i keyed the mike and say the led display dance that i remembered it happened before. guess i don't look at my trim while talking! there! i am used to it already. now, it it changed the trim that would be something else. bob noffs On Thu, Aug 29, 2013 at 7:18 AM, wrote: > Hi Bob > > The Europa that I am building uses a Ray Allen for pitch trimming. I have > read over the years that some folks have the same problem you are > experiencing when transmitting. It seems that the greatest success is > keeping the wire run as far from antenna and associated wires as you can. I > installed 5 conductor twisted with shielding from ACS: > > http://www.europaowners.org/main.php?g2_itemId=30484 > > Ron Parigoris > > * > > * > > ________________________________ Message 4 _____________________________________ Time: 01:30:04 PM PST US Subject: AeroElectric-List: How to lose both ignition systems? From: "Builder_Bill" Bob, I was at your seminar at EAA431Brodhead, WI this Spring. There was a discussion on an accident involving a Lancair Dual LSE Ignition failure. I could not find it in a simple NSTB search assuming I even have enough details right to do so. The builder had supplied each LSE from an independent source, but failed to consider something else. Something about fuse & CB's in series maybe? Can you detail what happened to take down both LSE's? It's likely that sketch will be necessary. Thanks, Bill Jones Read this topic online here: http://forums.matronics.com/viewtopic.php?p=407730#407730 ________________________________ Message 5 _____________________________________ Time: 07:09:01 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: How to lose both ignition systems? At 03:29 PM 8/29/2013, you wrote: > > >Bob, I was at your seminar at EAA431Brodhead, WI this Spring. > >There was a discussion on an accident involving a Lancair Dual LSE >Ignition failure. I could not find it in a simple NSTB search >assuming I even have enough details right to do so. > >The builder had supplied each LSE from an independent source, but >failed to consider something else. Something about fuse & CB's in series maybe? > >Can you detail what happened to take down both LSE's? It's likely >that sketch will be necessary. Yes. That case settled a few weeks ago. I'm going to publish my reports and demonstration videos that were produced in support of the technical analysis. I need to 'sanitize' them a little so as to avoid causing unwarranted discomfort on the part of the participants. In any case, it is unlikely that anyone here on the List would repeat the error . . . an error that grew out of a combination of 'redundancy' features stacked on top of each other combined with a poor selection of components wherein both systems shared hardware in the power path. Run each ignition from a separate protective device on the battery bus . . . or separate battery busses if there are two batteries. Simple, direct, no shared hardware and truly redundant. 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