---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Fri 12/16/16: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:13 AM - Re: AeroElectric-List Digest: 2 Msgs - 12/15/16 (Bill Schertz) 2. 06:56 AM - Airport Courtesy Cars App Closing? (gbrasch) 3. 07:33 AM - Re: Re: AeroElectric-List Digest: 2 Msgs - 12/15/16 (Robert L. Nuckolls, III) 4. 07:48 AM - Re: Stratux position data (rampil) ________________________________ Message 1 _____________________________________ Time: 06:13:19 AM PST US From: "Bill Schertz" Subject: AeroElectric-List: Re: AeroElectric-List Digest: 2 Msgs - 12/15/16 I don't think you need a machine shop. Hardware store has bronze 'oillite' bearings in different shaft sizes, that can be epoxied into a bulkhead. Then some use of Aluminum angle to mount the pot. Bill Schertz -----Original Message----- From: AeroElectric-List Digest Server Sent: Friday, December 16, 2016 12:59 AM Subject: AeroElectric-List Digest: 2 Msgs - 12/15/16 * ================================================= Online Versions of Today's List Digest Archive ================================================= Today's complete AeroElectric-List Digest can also be found in either of the two Web Links listed below. The .html file includes the Digest formatted in HTML for viewing with a web browser and features Hyperlinked Indexes and Message Navigation. The .txt file includes the plain ASCII version of the AeroElectric-List Digest and can be viewed with a generic text editor such as Notepad or with a web browser. HTML Version: http://www.matronics.com/digest/digestview.php?Style=82701&View=html&Chapter 16-12-15&Archive=AeroElectric Text Version: http://www.matronics.com/digest/digestview.php?Style=82701&View=txt&Chapter 16-12-15&Archive=AeroElectric =============================================== EMail Version of Today's List Digest Archive =============================================== ---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Thu 12/15/16: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 09:50 AM - Re: Trim position indicator (Robert L. Nuckolls, III) 2. 07:00 PM - Re: Trim position indicator (donjohnston) ________________________________ Message 1 _____________________________________ Time: 09:50:13 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Trim position indicator At 06:51 PM 12/13/2016, you wrote: >how about a servo potentiometer geared to the idler pulley > >On Dec 13, 2016, at 19:30, Matt Dralle ><dralle@matronics.com> wrote: > > I've been mulling this over the past few days. Had to spend a lot of time on the road . . . good opportunity for sifting the seeds of ideas. That idler pulley seems the opportune location for tapping into trim system position data. With a little creating work on a small lathe, you could remount that pulley on a shaft supported by a bushing extending through the mounting surface. Is there room behind that bulkhead to mount a potentiometer? It seems likely that full stroke travel of the trim system will not produce more than 10 revolutions of the idler pulley. The pot would be rigged to produce 50% of full scale voltage with the trim system mechanically neutral. Simple electronics can offer electrical adjustment of the pot voltage should mechanical neutral be offset from aerodynamic neutral. If you had a voltage representing trim postion, where/how would you display it? Bob . . . ________________________________ Message 2 _____________________________________ Time: 07:00:32 PM PST US Subject: AeroElectric-List: Re: Trim position indicator From: "donjohnston" nuckolls.bob(at)aeroelect wrote: > At 06:51 PM 12/13/2016, you wrote: > > That idler pulley seems the opportune location for tapping into trim > system position data. With a little creating work on a small lathe, you could remount that pulley on a shaft supported by a bushing extending through the mounting surface. Is there room behind that bulkhead to mount a potentiometer? > > Bob . . . Yes, that would be an elegant solution. There's plenty of room on the forward side of the bulkhead. However, I don't have access to a machine shop. :( The position data would be sent to the VPX. It has inputs that can handle the Ray Allen position sensors which then displays it on the GRT HXr EFIS. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=463960#463960 ________________________________ Message 2 _____________________________________ Time: 06:56:35 AM PST US Subject: AeroElectric-List: Airport Courtesy Cars App Closing? From: "gbrasch" IMPORTANT! If you are a user of the app version of Airport Courtesy Cars, please view it for an important message about the possible closure of the app, or view the page here: https://www.airportcourtesycars.com/app-status.html -------- Glenn Brasch RV-9A Flying Medevac Helicopter Pilot (Ret) Owner, "Airport Courtesy Cars" Smart Phone App and www.airportcourtesycars.com Read this topic online here: http://forums.matronics.com/viewtopic.php?p=463970#463970 ________________________________ Message 3 _____________________________________ Time: 07:33:21 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Re: AeroElectric-List Digest: 2 Msgs - 12/15/16 At 08:11 AM 12/16/2016, you wrote: > > >I don't think you need a machine shop. Hardware store has bronze >'oillite' bearings in different shaft sizes, that can be epoxied >into a bulkhead. Then some use of Aluminum angle to mount the pot. Agreed . . . 'jeeping' a pot onto the idler shaft is just a matter of noodling through the mechanical tinker-toya. Given that the sensor is a plain-jane potentiometer, you can probably connect it directly into the trim signal input of the EFIS assuming that it probably expects a signal bounded by zero and 5 volts. There may even be a 5v output from the EFIS that can be tapped to excite the pot. Does your idler pulley have a bearing built in or is it a pulley with set-screw or other fastener designed to mount directly to a shaft. Assuming the latter, can you acquire one that attaches to a shaft? Bob . . . ________________________________ Message 4 _____________________________________ Time: 07:48:20 AM PST US Subject: AeroElectric-List: Re: Stratux position data From: "rampil" The Stratux is a wireless software package and does not offer "pins". More specifically, some of the Rasp Pi modules do have USB ports. You did not say which ELT you have or what the exact specs are it needs for GPS input. Many need RS232 serial, a 50 year obsolete protocol. That's not to say that you can't alter the software to use a USB port to output GPS strings. But then you would need an ELT that talks USB. -------- Ira N224XS Read this topic online here: http://forums.matronics.com/viewtopic.php?p=464028#464028 ------------------------------------------------------------------------------------- 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.