---------------------------------------------------------- M14PEngines-List Digest Archive --- Total Messages Posted Sun 02/28/10: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 03:28 PM - RPM pickup and CHT/EGT probes (jbuseman) 2. 04:59 PM - Re: RPM pickup and CHT/EGT probes (daniel young) ________________________________ Message 1 _____________________________________ Time: 03:28:22 PM PST US Subject: M14PEngines-List: RPM pickup and CHT/EGT probes From: "jbuseman" Hi, what is the best way to get tach information to an EFIS display? Would it be from the P-Lead off the ignition switch or does someone manufacture a device that can convert the info from the tach cable and send it electronically to the EFIS system? Also if you had up to 14 probes that could be used what would the ideal setup as far as number of EGT's, CHT's and their location. Thanks Read this topic online here: http://forums.matronics.com/viewtopic.php?p=288654#288654 ________________________________ Message 2 _____________________________________ Time: 04:59:55 PM PST US From: daniel young Subject: Re: M14PEngines-List: RPM pickup and CHT/EGT probes Hi Joel I used the GRT EFIS and really like the thing. I picked up the tach signal at the mag switches and ran each into a switch that selects L or R to send back up front to the forward (master) EFIS box. As I recall, GRT gives you a resistor to put in line with the signal from the mag. For the temp senders, I am looking at all 9 EGT and 3 CHT. I wired senders for all 9 CHT because GRT told me 2 years ago that they were upping the channels to the EFIS to handle 9 + 9 from a radial. Still waiting for them to come through with that mod but don't really care if they don't. 3 CHT's seem like enough and they all run about the same. Having all the EGT's is good for knowing exactly what is going on with each cyl and for IDing where a fouled plug or ign wire might be. Dan N12DY ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message m14pengines-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/M14PEngines-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/m14pengines-list Browse Digests http://www.matronics.com/digest/m14pengines-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.