---------------------------------------------------------- JabiruEngine-List Digest Archive --- Total Messages Posted Thu 12/20/12: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:02 PM - Now No tach (AirEupora) 2. 05:16 PM - Re: Now No tach (Nick Otterback) 3. 10:52 PM - Re: Now No tach (Rob Turk) ________________________________ Message 1 _____________________________________ Time: 05:02:31 PM PST US Subject: JabiruEngine-List: Now No tach From: "AirEupora" I completed the 10 hour inspection on the Jabiru and a lot of minor problems. I went to fly today and the tach would not work. I switched leads, but not dice. The alternator showed a charge at high power, but the tach would not come back on. I had installed a 10k Resistor on the wire leading into the RDAC. I remove it and re-installed the wire and still no dice. I'm using a MGKL Odyssey G2. I need a tach as CFR 14, 91.205 requires it. Anybody using something else on the Jabiru? Read this topic online here: http://forums.matronics.com/viewtopic.php?p=390761#390761 ________________________________ Message 2 _____________________________________ Time: 05:16:48 PM PST US From: Nick Otterback Subject: Re: JabiruEngine-List: Now No tach The GRT EIS6000 is very reliable and requires no special additions except to connet the pulse wire to the alt. We use those on out jab powered Lightnings and have never had a problem. I also have one in my lycoming powered Pitts. Nick Sent from my pocket On Dec 20, 2012, at 7:01 PM, "AirEupora" wrote: > > I completed the 10 hour inspection on the Jabiru and a lot of minor problems. I went to fly today and the tach would not work. I switched leads, but not dice. The alternator showed a charge at high power, but the tach would not come back on. I had installed a 10k Resistor on the wire leading into the RDAC. I remove it and re-installed the wire and still no dice. > I'm using a MGKL Odyssey G2. > > I need a tach as CFR 14, 91.205 requires it. > > Anybody using something else on the Jabiru? > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=390761#390761 > > > > > > > > > > ________________________________ Message 3 _____________________________________ Time: 10:52:39 PM PST US From: Rob Turk Subject: Re: JabiruEngine-List: Now No tach I'm using a UMA analog tach. At low rpm it dropped to zero. The problem is that the alternator AC is basically floating against ground. The fix was to add a resistor between ground and the opposite alternator wire. The resistor may vary, but you can start with 47Kohm 1W. If the tach used to work in the initial 10 hours and now doesn't, then something has changed during your inspection. Go over whatever electronics you touched.. On 12/21/2012 2:01 AM, AirEupora wrote: > > I completed the 10 hour inspection on the Jabiru and a lot of minor problems. I went to fly today and the tach would not work. I switched leads, but not dice. The alternator showed a charge at high power, but the tach would not come back on. I had installed a 10k Resistor on the wire leading into the RDAC. I remove it and re-installed the wire and still no dice. > I'm using a MGKL Odyssey G2. > > I need a tach as CFR 14, 91.205 requires it. > > Anybody using something else on the Jabiru? > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=390761#390761 > > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message jabiruengine-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/JabiruEngine-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/jabiruengine-list Browse Digests http://www.matronics.com/digest/jabiruengine-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.