---------------------------------------------------------- Pulsar-List Digest Archive --- Total Messages Posted Thu 01/03/13: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:40 AM - Rotax 912 charging question (Esa Lehto) 2. 09:59 AM - Re: Rotax 912 charging question (Brian Anderson) 3. 10:33 AM - Re: Rotax 912 charging question (Scott MacIntyre) 4. 05:43 PM - Stiff Aileron (barrynorman@comcast.net) 5. 10:11 PM - Re: Fresh Rotax 582 (Alex Kozloff) ________________________________ Message 1 _____________________________________ Time: 07:40:20 AM PST US From: Esa Lehto Subject: Pulsar-List: Rotax 912 charging question Hi, I was heading today out to flying. During the run-up check I found that charging indicated low 11.7 V. I checked TX and there was extra noise what doesn't belong to normal TX. When I took all the load away then charging indicated little over 13 V. Just adding little load it went around 11.7 V. Any ideas what is going on? Is it regulator, alternator, battery or what? Esa Pulsar XP Rotax 912 ________________________________ Message 2 _____________________________________ Time: 09:59:56 AM PST US From: Brian Anderson Subject: Re: Pulsar-List: Rotax 912 charging question Esa, It is most unlikely to be the battery, but you can check that independently. Should be about 12.6v when charged. Unlikely to be the alternator. Quite a few people have had problems with the regulator. I've had a similar low voltage problem on one occasion and it turned out to be a loose connection in the regulator connector, so a first check might be to have a good look at the wiring for loose connections. Brian On 4/01/2013, at 4:39 AM, Esa Lehto wrote: > Hi, > > I was heading today out to flying. During the run-up check I found that charging indicated low 11.7 V. I checked TX and there was extra noise what doesn't belong to normal TX. When I took all the load away then charging indicated little over 13 V. Just adding little load it went around 11.7 V. > > Any ideas what is going on? Is it regulator, alternator, battery or what? > > Esa > Pulsar XP > Rotax 912 > > > ________________________________ Message 3 _____________________________________ Time: 10:33:35 AM PST US From: Scott MacIntyre Subject: Re: Pulsar-List: Rotax 912 charging question Hi If you're checking the regulator there are a few other things detailed here (Dec 18th post): http://pointsforpilots.blogspot.co.uk/ Scott MacIntyre ________________________________ Message 4 _____________________________________ Time: 05:43:26 PM PST US From: barrynorman@comcast.net Subject: Pulsar-List: Stiff Aileron I noticed after an extended flight up to Baltimore in low 20 degree F temps that my ailerons took significantly more effort to move than normal. After I landed, I checked out the plane and found nothing wrong. It appeared to have improved some on the ground with slightly higher temps in the low 30s. After thinking about it today I looked up the expansion/contraction rate of wood (rear spar) and aluminum (aileron) and did a calculation on the length of the aileron and found the difference was .020. Bottom line is I was wondering if that's enough to create bind in the hinges due to the difference in installed temp and the cold air I was flying in. When I think back to when I was testing the plane 7 years ago in cold air, they were stiff then also. I'm considering removing the ailerons and filing a little more clearance in the tabs on the hinges to see if that helps the situation. Any thoughts? Barry ________________________________ Message 5 _____________________________________ Time: 10:11:39 PM PST US Subject: Re: Pulsar-List: Fresh Rotax 582 From: "Alex Kozloff" ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message pulsar-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Pulsar-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/pulsar-list Browse Digests http://www.matronics.com/digest/pulsar-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.