---------------------------------------------------------- RV10-List Digest Archive --- Total Messages Posted Thu 06/05/14: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 02:58 PM - Re: Sudden Oiltemp dropout during climb out (Bill Watson) 2. 05:00 PM - Re: Sudden Oiltemp dropout during climb out (Albert Gardner) ________________________________ Message 1 _____________________________________ Time: 02:58:51 PM PST US From: Bill Watson Subject: Re: RV10-List: Sudden Oiltemp dropout during climb out I've been waiting for this to come up... I had a similar problem. That is, quick drops and rises of oil temperature. The high points looked like 'normal' temps. The low points were just below the recommended threshold, that is it would reads about 150F. This has been going on for quite awhile. I swapped out sensors but the new sensor at first simply showed me the lower temps. For winter flying, I blocked some of the cooling air to bring the temp up but it seemed to have little impact. At some point, the temps again started vacillating between 'normal' and 'low' temps with no discernible pattern. The vacillations were instantaneous, as in '1 second'. I never got around to trying to do some calibration testing of the sensor. Since everything else seemed right and normal, I just ran with it and removed the cooling air block. I'm using a GRT engine monitor and sensor. I also have an SD-20 alternator installed on the vacuum pump pad (along with a 40amp main alt). During my last oil change, I'm staring at the sensor and the wiring and realize that the generous service loop I have in place for the sensor could allow the wires to rest up against the SD-20 in flight. Could that have something to do with the problem? I can't make any sense of why such a thing would cause such a thing but... I tightened up the service loop a bit so it now looks like this oil temp sensor and SD-20 with tighter service loop I haven't seen anything but 'normal' oil temps since the change with no jumping around. Observation continues. Does this sound possible in other installations? This curious builder wants to know. On 6/3/2014 5:04 AM, Mike Whisky wrote: > > Hello > I have seen now three times in the last 70h of flight that in long climb outs the oil temp dropped within a second from 185 down to 150-155 it stays there and recovers after leveling off most of the time back to normal within a second or so. I believe that this must be a sensor issue as the oil temp can't change that quickly. What is bothering me is that it only happens at the end of those climbs at around d 8k ft. Did anybody come across something similar? > Regards > Michael > > -------- > RV-10 builder (flying) > #511 > > ________________________________ Message 2 _____________________________________ Time: 05:00:36 PM PST US From: "Albert Gardner" Subject: RE: RV10-List: Sudden Oiltemp dropout during climb out I initially had the short occasional drops in oil temp but cured it by grounding the sensor case. Albert Gardner Yuma, AZ N991RV ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rv10-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RV10-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/rv10-list Browse Digests http://www.matronics.com/digest/rv10-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.