Today's Message Index:
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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
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| Subject: | 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
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| Subject: | Re: 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 <esalehto@yahoo.com> 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
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| Subject: | Re: 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
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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
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| Subject: | Re: Fresh Rotax 582 |
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