---------------------------------------------------------- Europa-List Digest Archive --- Total Messages Posted Thu 07/29/10: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 08:50 AM - Re: Negative "G" (rampil) 2. 09:37 AM - EFIS Installation (Trevpond@aol.com) 3. 02:29 PM - Re: Voltage reading of 25V (Karl Heindl) 4. 04:19 PM - Re: Voltage reading of 25V (Greg Fuchs) 5. 07:41 PM - Re: Voltage reading of 25V (Karl Heindl) ________________________________ Message 1 _____________________________________ Time: 08:50:49 AM PST US Subject: Europa-List: Re: Negative "G" From: "rampil" The engine will stop after a few seconds due to fuel starvation. You may also draw air into the fine oil channels that we must carefully purge after opening the lower portions of oil system. I have not methodically flight tested negative g, but have seen a few awkward akro moments and some moderate turbulence. A second or two of neg 1 g should be no problem in my opinion. -------- Ira N224XS Read this topic online here: http://forums.matronics.com/viewtopic.php?p=306686#306686 ________________________________ Message 2 _____________________________________ Time: 09:37:55 AM PST US From: Trevpond@aol.com Subject: Europa-List: EFIS Installation Hi Guys, My Blue Mountain EFIS has finally expired and of course they have gone out of business! I'm looking at putting in a Dynon Skyview in it's place and am looking an installer who won't try to skin me on price. Anybody know of anyone? Regards Trevor G-LINN (thank goodness for miniature standby instruments) ________________________________ Message 3 _____________________________________ Time: 02:29:28 PM PST US From: Karl Heindl Subject: RE: Europa-List: Voltage reading of 25V Greg=2C The problem is with the EIS=2C only why did it coincide with a battery move ? I checked the voltage in the panel and everything looks fine with the main system. The EIS gives good readings with the engine off. Thde only anomaly is the v oltage which says 11.0=2C when it should be 12.5. When I start the engine the readings go haywire: oil temp is below of what is possible=2C pressure is 99=2C cht is 900C. After switching the EIS off a nd on a few times the readings are good. But then the numbers start bouncin g around again. Of course Grand Rapids are closed for Oshkosh until Monday =2C and I am not sure what to do. Any other ideas ? Karl From: gregoryf.flyboy@comcast.net Subject: RE: Europa-List: Voltage reading of 25V Hmm..Not sure=2C My first thought was along the line of what Ira had said..bad ground somewh ere. Try making some measurements between the power and ground rails with a han dheld meter to confirm what the EIS was reading. Take the measurements with the key on and the engine off=2C to eliminate all chance of actually produ cing deadly avionics voltages from a spinning alternator. What is the EIS r eading in this configuration(engine off)? Could there be something that was connected to the rear-ward wiring that became disconnected when moving the battery up front? Is the ground strap to the engine block still connected? Greg From: owner-europa-list-server@matronics.com [mailto:owner-europa-list-serv er@matronics.com] On Behalf Of Karl Heindl Sent: Wednesday=2C July 28=2C 2010 12:23 PM Subject: Europa-List: Voltage reading of 25V This one is for you electric specialists: All I did was to move the battery back to the firewall from the rear fusela ge. I fire up the engine for a highspeed taxi test for my MG configuration and I get a voltage reading of 25. I swapped regulators - I always carry a spare - but no change. I also get the same reading with the alternator switched off. What could I possibly ha ve screwed up ? To make things even more perplexing=2C the oil pressure indication does not drop below 93=2C as the engine is warming up=2C but maybe the two are some how related. All readings are from the EIS. Never had a problem like this b efore. Any help appreciated. Thanks=2C Karl href="http://www.matronics.com/Navigator?Europa-List">http://www.matronhr ef="http://forums.matronics.com">http://forums.matronics.com href="http://www.matronics.com/contribution">http://www.matronics.com/c ________________________________ Message 4 _____________________________________ Time: 04:19:41 PM PST US From: "Greg Fuchs " Subject: RE: Europa-List: Voltage reading of 25V Karl, >The problem is with the EIS, only why did it coincide with a battery move ? It shouldn't, unless something else changed. Ok, so the focus is on the Grand Rapids unit. I don't know much about the unit itself. What is the model number? Could you steer me to information on it, so that I might find out more about it? Not knowing anything about the GR unit, here are some general ideas (all measurements taken with the engine off and master on). 1. Check supply voltage and ground connections to the remote measuring system (if there is one). You know, the box that sometimes exists under the cowl with all the sensor wires running to it. 2. Check supply voltage and ground connections to the EIS unit, itself. 3. Check if there are any 'sense' lines that need to be connected that have become open. (Leave this one for later, until after looking at the units documentation). #1 and 2 above can be checked with a handheld meter set to volts. Red probe to (+ supply) and Black probe to (- supply) on the EIS and repeated for remote measuring box. If all is ok so far, you can now check that the ground and power connections are valid and stable, i.e.. not getting partial power or a partial ground through another device that isn't the battery. 1a. Verifying that the ground is stable and valid: Black probe on handheld meter(set to volts) to the battery ground post. Red probe to the negative supply (GND) on the EIS. Repeat for the box under the cowl. Both readings should effectively be zero. If not, it will show a connection problem to the ground of the unit. 2a. Verify positive Supply is stable and valid. Red probe on handheld to the battery positive terminal. Black probe on the handheld to the VCC/Supply on the remote measuring box. Repeat for EIS. Again, both readings should effectively be zero, since a zero reading will show up the correct connection to the battery (readings taken across the wire). Any measurements producing more than a few millivolts (maybe 10's of millivolts) are suspect. If invalid reading, it will show a bad supply connection. Note that if the voltage measurements in #1 and #2 gave the full battery voltage, then 1a and 2a will probably be zero, unless something is changing dynamically. I hope some of this makes sense, Greg P.S. Is the old battery ground wire separate from the new ground wire? If they are not connected to each other but still in place, try shorting the two together to see if the readings go back to normal. NOT + to - or VCC to ground for goodness sakes, unless you want to see a lot of sparks! Just connect new ground to the old ground, and the new vcc to the old vcc. You might try this one first, since it is easier. If the old battery wires are taken out, then never mind. _____ From: owner-europa-list-server@matronics.com [mailto:owner-europa-list-server@matronics.com] On Behalf Of Karl Heindl Sent: Thursday, July 29, 2010 2:28 PM Subject: RE: Europa-List: Voltage reading of 25V Greg, The problem is with the EIS, only why did it coincide with a battery move ? I checked the voltage in the panel and everything looks fine with the main system. The EIS gives good readings with the engine off. Thde only anomaly is the voltage which says 11.0, when it should be 12.5. When I start the engine the readings go haywire: oil temp is below of what is possible, pressure is 99, cht is 900C. After switching the EIS off and on a few times the readings are good. But then the numbers start bouncing around again. Of course Grand Rapids are closed for Oshkosh until Monday, and I am not sure what to do. Any other ideas ? Karl ________________________________ Message 5 _____________________________________ Time: 07:41:31 PM PST US From: Karl Heindl Subject: RE: Europa-List: Voltage reading of 25V Thank you for spending so much time on my problem=2C Gary. I will try and m ake the suggested measurements. I have another little problem in that I can 't find my documentation. I will have a good search tomorrow=2C and maybe g et it off the internet. The unit is a EIS 2000=2C installed around 2000. It never gave a problem. J udging by the symptons it looks like a loose connection or broken wire. It would also explain why it is acting up especially when the engine is runnin g with a little vibration. The EIS cable with multipin connector ends in a box on the front of the fir ewall=2C so access should be no problem. The old battery cables=2C which we re actually new Perihelion 4 gauge aluminum =2C were completely removed=2C and I made up two new very short leads from the same material. Cheers=2C Karl From: gregoryf.flyboy@comcast.net Subject: RE: Europa-List: Voltage reading of 25V Karl=2C >The problem is with the EIS=2C only why did it coincide with a battery mov e ? It shouldn't=2C unless something else changed. Ok=2C so the focus is on the Grand Rapids unit. I don't know much about the unit itself. What is the model number? Could you steer me to information on it=2C so tha t I might find out more about it?Not knowing anything about the GR unit=2C here are some general ideas (all measurements taken with the engine off and master on). 1. Check supply voltage and ground connections to the remote measuring system (if there is one). You know=2C the box that sometimes exists under t he cowl with all the sensor wires running to it. 2. Check supply voltage and ground connections to the EIS unit=2C itsel f. 3. Check if there are any 'sense' lines that need to be connected that h ave become open. (Leave this one for later=2C until after looking at the un its documentation). #1 and 2 above can be checked with a handheld meter set to volts. Red probe to (+ supply) and Black probe to (- supply) on the EIS and repeated for re mote measuring box. If all is ok so far=2C you can now check that the ground and power connecti ons are valid and stable=2C i.e.. not getting partial power or a partial gr ound through another device that isn't the battery. 1a. Verifying that the ground is stable and valid: Black probe on handheld meter(set to volts) to the battery ground post. Red probe to the negative supply (GND) on the EIS. Repeat for the box under the cowl. Both readings should effectively be zero. If not=2C it will show a connecti on problem to the ground of the unit. 2a. Verify positive Supply is stable and valid. Red probe on handheld to the battery positive terminal. Black probe on the handheld to the VCC/Suppl y on the remote measuring box. Repeat for EIS. Again=2C both readings should effectively be zero=2C since a zero reading will show up the correct connection to the battery (readings taken across the wire). Any measurements producing more than a few milliv olts (maybe 10's of millivolts) are suspect. If invalid reading=2C it will show a bad supply connection. Note that if the voltage measurements in #1 and #2 gave the full battery vo ltage=2C then 1a and 2a will probably be zero=2C unless something is changi ng dynamically. I hope some of this makes sense=2C Greg P.S. Is the old battery ground wire separate from the new ground wire? If they are not connected to each other but still in place=2C try shorting the two together to see if the readings go back to normal. NOT + to - or VCC t o ground for goodness sakes=2C unless you want to see a lot of sparks! Just connect new ground to the old ground=2C and the new vcc to the old vcc. Y ou might try this one first=2C since it is easier. If the old battery wires are taken out=2C then never mind. From: owner-europa-list-server@matronics.com [mailto:owner-europa-list-serv er@matronics.com] On Behalf Of Karl Heindl Sent: Thursday=2C July 29=2C 2010 2:28 PM Subject: RE: Europa-List: Voltage reading of 25V Greg=2C The problem is with the EIS=2C only why did it coincide with a battery move ? I checked the voltage in the panel and everything looks fine with the main system. The EIS gives good readings with the engine off. Thde only anomaly is the v oltage which says 11.0=2C when it should be 12.5. When I start the engine the readings go haywire: oil temp is below of what is possible=2C pressure is 99=2C cht is 900C. After switching the EIS off a nd on a few times the readings are good. But then the numbers start bouncin g around again. Of course Grand Rapids are closed for Oshkosh until Monday =2C and I am not sure what to do. Any other ideas ? Karl ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message europa-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Europa-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/europa-list Browse Digests http://www.matronics.com/digest/europa-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.