---------------------------------------------------------- JabiruEngine-List Digest Archive --- Total Messages Posted Fri 11/09/12: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:28 AM - Re: CHT probes (AirEupora) 2. 08:38 PM - Re: Re: CHT probes (FLYaDIVE) ________________________________ Message 1 _____________________________________ Time: 07:28:36 AM PST US Subject: JabiruEngine-List: Re: CHT probes From: "AirEupora" The attachment point should have been provided by the engine manufacture. Its a Jabiru 3300 engine! There they no attach point. The manufacture is using the RING mount thermocouples Does the voltmeter have a specific scale for temperature and it is set up for K type probes? YES and YES. Scale is Centigrade Also what is ACT? Actual readings from Voltmeter Grounded. Rick Read this topic online here: http://forums.matronics.com/viewtopic.php?p=387366#387366 ________________________________ Message 2 _____________________________________ Time: 08:38:46 PM PST US Subject: Re: JabiruEngine-List: Re: CHT probes From: FLYaDIVE AHhhhh Got-cha Rick: I would NOT use the Ring thermocouples under the spark plugs. As I mentioned they are poor in two ways: 1 - The temps always read high and 2 - They cause the spark plugs to run hot. Let's add a third reason- 3 - Because of location the readings are not usable for comparison between planes as a reference. EVEN with a plane also equipped with ring probes. Just way too much of a difference in readings. You mentioned the other unit you used to compare temps; were were those probes attached? OK, since you are using Grounded probes they are usually a bit less expensive. And they are more common. Make sure ALL the probes use the SAME colored wire for the Ground connection. Usually it is the WHITE wire, the RED one is the HOT and is kept above Ground. Go with the other unit and those readings. You have already noted the variance between them is less. Too many variables equals too many problems. Barry AirEupora wrote: > AirEupora@sbcglobal.net> > > The attachment point should have been provided by the engine manufacture. > It=92s a Jabiru 3300 engine! There they no attach point. The manufacture is > using the RING mount thermocouples > > > Does the voltmeter have a specific scale for temperature and it is set up > for K type probes? YES and YES. Scale is =93Centigrade=94 > > Also what is ACT? Actual readings from Voltmeter > > Grounded. > Rick > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=387366#387366 > > =========== =========== =========== =========== > > ------------------------------------------------------------------------------------- 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.