Today's Message Index:
----------------------
1. 07:46 AM - Re: Re: Engine Vibration (Randy Lervold)
2. 09:13 AM - Low voltage problem- new 912ULS (Les Goldner)
3. 09:35 AM - Re: Low voltage problem- new 912ULS (Gilles Thesee)
4. 02:49 PM - Re: 912ULS: Carburettor and Airbox venting lines (N601RT)
Message 1
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| Subject: | Re: Engine Vibration |
I'm just starting to lurk here as I consider starting a Kitfox Super Sport
with a 912. In terms of prop balancing, our EAA Chapter bought one of the
balancers referenced below and we make extensive use of it. This can be a
great goal/project for a chapter, see the below link for details...
http://www.eaa105.org/Programs/programs.htm#PropBalancing
Our members LOVE this program, and reducing vibration helps extend the life
of all components on the plane, especially in the FWF area.
Randy Lervold
www.rv-3.com
www.rv-8.com
----- Original Message ----- > The Woodcomp props are statically balanced at
the factory, as you suspected. Unfortunately, over time they get nicks etc.
which will affect the static balance a bit. Dynamically balancing a
prop/engine requires expensive equipment and competent technician. The
prop/engine combination balance check is done while running. Here is a
decent FAQ on the subject.
>
> http://www.dssmicro.com/faqs/fqprpbl.htm
>
> As you might expect, DSSMICRO sells this equipment for doing prop
> balancing.
>
> I've not found any one in our area that does dynamic prop balancing and
> the equipment is too expensive unless you are going into the prop
> balancing business.
Message 2
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| Subject: | Low voltage problem- new 912ULS |
If you have experienced and solved the following problem pls let me know.
My 912ULS was sitting unopened for 3-years before I installed it in my new
Zenith 701 but works well. My battery is new. I followed Aeroelectric's 912
wiring diagram, which included a low voltage warning light that triggers at
12.5V (if you have a CAD program you can look the diagram at
http://www.aeroelectric.com/PPS/ACAD_Architecture_Dwgs/Z16L.dwg.) When I fly
the plane, the low voltage warning light comes on as soon as I turn on
anything requiring more than minimal power consumption (like the strobes)
and the new battery voltage is lower after I land than it was before take
off. Since the battery is draining in flight, the assumption is that the 912
alternator or voltage regulator is malfunctioning.
I need to know if anyone else has experienced this situation, what was done
to fix it, how to isolate and fix the problem, etc. Any help would be
appreciated.
Regards,
Les
510-549-1622
Message 3
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| Subject: | Re: Low voltage problem- new 912ULS |
Les Goldner a crit :
> If you have experienced and solved the following problem pls let me know.
>
> My 912ULS was sitting unopened for 3-years before I installed it in my
> new Zenith 701 but works well. My battery is new. I followed
> Aeroelectric's 912 wiring diagram, which included a low voltage
> warning light that triggers at 12.5V (if you have a CAD program you
> can look the diagram
> at http://www.aeroelectric.com/PPS/ACAD_Architecture_Dwgs/Z16L.dwg.)
> When I fly the plane, the low voltage warning light comes on as soon
> as I turn on anything requiring more than minimal power consumption
> (like the strobes) and the new battery voltage is lower after I land
> than it was before take off. Since the battery is draining in flight,
> the assumption is that the 912 alternator or voltage regulator is
> malfunctioning.
Les,
I too have wired two planes as per Z16.
What I'd do first is a thorough review of the actual wiring to check
that everything is OK. There have been several occurences of forgotten
connections.
Then actually measure bus voltage when running.
Also, you'll get more considerate opinions if you post your question on
the Aeroelectric 'List.
Best regards,
--
Gilles
http://contrails.free.fr
Message 4
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| Subject: | Re: 912ULS: Carburettor and Airbox venting lines |
Tommy,
Here is a photo of one vent line going into a larger line in my plane. I drilled
a small hole in the top of the larger line near the end of the original length
Rotax vent line, just to be sure the vent sensed the local pressure.
(Sorry for the delayed response, I've been away for the holidays.)
Happy New Year
Roy
N601RT: 2002 CH601HDS, nose gear, Rotax 912ULS, Arplast PV-50, All electric, IFR,
equipped, 895hrs
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=155604#155604
Attachments:
http://forums.matronics.com//files/912_carb_vent_41_939.jpg
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