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slyck(at)frontiernet.net
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 Posted: Tue Oct 31, 2006 5:10 am Post subject: LSA/4 stroke rotax |
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Howdy gents, about time a subject got started here to see if anyone
still
looks. If you look at the majority of new factory built LSAs, they
all have
one thing in common -the Rotax 912. As an A&P I have very little
experience
with them and figure that to be a like condition with most A&Ps.
Now that we can, by default, sign off the annual condition inspections
on
a raft of new craft, what is your opinion of the need to attend a Rotax
school to insure a safe inspection?
Bob Bean
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ECLarsen81(at)aol.com
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| Posted: Tue Oct 31, 2006 6:34 am Post subject: LSA/4 stroke rotax |
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Bob,
I think attending a school or seminar on these engines is a excellent idea.
As with the Cont and Lyco engines, the Rotax have their own quirks that need looking after, especially in the gearbox.
The Katana's used by flight schools had the 912 and the later models changed to the Cont. There was one local a few years back and it went through a couple of gearboxes before finding out that the students were shutting down the engine at a lower rpm than recomended causing excessive gear chatter/backlash.
Another area they had problems with was the lack of safety wiring and locknuts. The factory had used threadlocker to some extent that was being degraded by engine heat causing assemblies to loosen and leak. Maybe the later versions have corrected this.
Not only will we be seeing the 912's, but also the 914's with the turbo's as well as the 2 strokes that are used on many of the "fat" and "2 place" ultralights that will be registering as E-SLA.
I've been lucky to have a good Powered Parachute instructor/dealer on the field that attended a rotax school for the 2 strokes and has his certificate. We've spent a bit of time together while he is doing the maintenance on them, and I can tell you that they are certainly going to create revenue for any shop that can do the work.
My 2 cents,
Ed
[quote][b]
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bonanza(at)vodamail.co.za
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| Posted: Tue Oct 31, 2006 8:22 am Post subject: LSA/4 stroke rotax |
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Essential IMHO
Bob Verwey
Bonanza ZU-DLW
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84KF
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| Posted: Mon Mar 05, 2007 4:34 am Post subject: Re: LSA/4 stroke rotax |
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As an A&P, (w\IA) and owner of a 912UL powered aircraft (experimental amateur-built) I too am facing a slow learning curve with the engine. One thing I've noticed at another "List" group is that many owners seem to want to swap original parts for what they assume are equals when the encounter problems. Capacitors, mufflers, fuel pumps...etc. While this is allowed and legal under the FAR's they operate under, it will make it difficult to determine the actual "condition" (reliability) of the engine. And like many owners of certificated aircraft, come inspection time they may not make these owner-mods known to you (assuming they need an A&P to do the inspection)
Since this is not allowed on ELSA and SLSA aircraft conformity should be a straight forward issue but I have my doubts about signing off on much else at this time.
Long story short.....where and when can one find and attend such a Rotax class\course?
steve
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thomriddle(at)adelphia.ne
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| Posted: Tue Mar 06, 2007 4:42 am Post subject: LSA/4 stroke rotax |
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Steve,
I am a power plant mechanic (only) and am part owner of an S-LSA w/
912UL. This is the second aircraft I've owned with this engine and love
it. I've done engine work on only one other Rotax powered plane(other
than my own), a standard category Diamond Katana with 912F certificated
engine. Yes, it takes a bit of time to learn its eccentricities but
there are some good schools available for pilots and others for
mechanics. One of my partners is an IA, like you, and he and I are
going to the Lockwood Aviation 2-day class in Sebring, FL just before
SunNFun. This class is intended for pilots and exp-a/b owners who want
to do minor maintenance themselves. I was told that this is really a
pre-requisite for their 3-day mechanic's class and there is very little
overlap in the class content. We're doing the 2-day class now and
probably will do the 3-day class later in the year.
Lockwood Aviation set up what they call Aero Technical Institute for
these classes. Here is their website.
http://www.aerotechnicalinstitute.com/
Thom in Buffalo
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84KF
Guest
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| Posted: Fri Mar 09, 2007 7:13 pm Post subject: Re: LSA/4 stroke rotax |
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Thom says...
"This is the second aircraft I've owned with this engine and love
it."
This is my first and while I'm ok with the nuts and bolts and servicing of my own 912UL, I have yet to adjust to the operating speed. To see (and hear) 4.000 plus rpm rubs me wrong, but that's my problem, not the engines. To much time behind a Cont. 65.
Total time on it since new is only 35 flight hrs or so, but it's been excellent, and no burps at all ...
Steve
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mlas(at)cox.net
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| Posted: Sat Mar 10, 2007 11:46 am Post subject: LSA/4 stroke rotax |
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Thom,
Just remember the reason for the RPM limit on Cont. and Lycs. is the
prop not the engine. I order for the small 912 to make horsepower it
must turn 4000 plus R's and use a gearbox to keep the prop speed down.
Mike
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