Today's Message Index:
----------------------
1. 07:22 PM - Initial oil fill on new engine (Hugh G. McKay III, P.E.)
2. 07:43 PM - Re: Initial oil fill on new engine (NYTerminat@aol.com)
3. 07:52 PM - Static RPM - 912UL (sonny)
4. 08:06 PM - Re: Initial oil fill on new engine (Jack Kuehn)
5. 08:16 PM - Re: Static RPM - 912UL (Jack Kuehn)
6. 11:41 PM - Re: Initial oil fill on new engine ()
Message 1
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| Subject: | Initial oil fill on new engine |
I have a new 912UL and am ready to fill it with oil. I notice in section
12-00-00, page 28 of the Rotax Maintenance Manual, 5.2.2 "Venting of the
Lubrication System" it calls for disconnecting the suction hose from the
oil tank and filling the the hose and oil cooler through the hose
itself, then reconnecting the hose. Do I do this for the initial oil
fill? If so, is the oil I poured in the hose and oil cooler part of the
3 litre total called for? After filling the hose and oil cooler in this
manner, how much oil do I pour in the tank itself?
Hugh McKay
Message 2
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| Subject: | Re: Initial oil fill on new engine |
In a message dated 7/26/2006 10:24:11 P.M. Eastern Daylight Time,
hgmckay@bellsouth.net writes:
I have a new 912UL and am ready to fill it with oil. I notice in section
12-00-00, page 28 of the Rotax Maintenance Manual, 5.2.2 "Venting of the
Lubrication System" it calls for disconnecting the suction hose from the oil tank
and filling the the hose and oil cooler through the hose itself, then
reconnecting the hose. Do I do this for the initial oil fill? Yes
If so, is the oil I poured in the hose and oil cooler part of the 3 litre
total called for? Yes After filling the hose and oil cooler in this manner,
how much oil do I pour in the tank itself? I brought mine up to the full make,
don't remember how much it totally took. After you run the engine and get a
steady oil pressure, you can shut it down and check the oil level.
Hugh McKay
Message 3
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| Subject: | Static RPM - 912UL |
--> RotaxEngines-List message posted by: sonny <lostpilot28@yahoo.com>
Hello,
I have a Pulsar XP with a Rotax 912UL. When I first bought the plane it had a
GSC 2-blade prop but I switched it to a 3-blade carbon fiber prop (made by the
same company as Kiev props). After installing the new prop, I initially set
the static RPM for 5200 like the old prop, however on takeoff I nearly over sped
the engine when I started to level out. I believe it was set at 22 degrees
or so (it was a long time ago). So I tried several different settings to get
the max in-flight RPM of about 5700.
OK, here's the downside: My static RPM is about 4400. During takeoff it still
accelerates quickly...the RPMs are usually around 4800 - 4900 on climb out. I
would much rather prefer the RPMs to be in the higher range to maximize takeoff
power, but so far I haven't noticed a problem with the lower RPMs.
My questions are, do any of you have your static RPMs set this low? Does anyone
think it's a problem that they're that low? I'm getting ready to move from
sea-level to an airport that's at about 4000 ft. Should I set the static to be
around 4800 RPMs and be careful not to over speed the engine at cruise? I don't
like this idea as it's easy to get distracted, and Rotax recommends tearing
the engine down in the event of an over speed. Any recommendations or advice
is welcome. Thanks.
Best regards,
Sonny W.
Pulsar XP N912SS
Message 4
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| Subject: | Re: Initial oil fill on new engine |
--> RotaxEngines-List message posted by: Jack Kuehn <jkuehn@mountaintime.myrf.net>
I think the exact amount of oil depends on your installation. Length of
hoses, size of oil cooler, oil thermostat or not, how the oil tank is
mounted, etc. Mine takes closer to 4 litre (US quarts), but there is a
range of perhaps half a litre where the engine will be fine. Oil level
in the 912 is a bit of a moving target! Check it the same way every
time to avoid confusing yourself! For example, always check it cold,
pull the prop through until you hear a gurgle. If you check it hot, it
will be different. Fill that hose every time you change oil, and prime
the system as the manual says. This is a great engine, and it will work
very reliably. Follow those basic guidelines in the manual and it will
work fine! I am not a Rotax specialist, and I have 95 hours on my 912
UL. These are my impressions so far.
Jack
Hugh G. McKay III, P.E. wrote:
> I have a new 912UL and am ready to fill it with oil. I notice in
> section 12-00-00, page 28 of the Rotax Maintenance Manual, 5.2.2
> "Venting of the Lubrication System" it calls for disconnecting the
> suction hose from the oil tank and filling the the hose and oil cooler
> through the hose itself, then reconnecting the hose. Do I do this for
> the initial oil fill? If so, is the oil I poured in the hose and oil
> cooler part of the 3 litre total called for? After filling the hose
> and oil cooler in this manner, how much oil do I pour in the tank itself?
>
> Hugh McKay
Message 5
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| Subject: | Re: Static RPM - 912UL |
--> RotaxEngines-List message posted by: Jack Kuehn <jkuehn@mountaintime.myrf.net>
I had my 912 UL set at 5000 static, and I noticed some oil burn and
sooty spark plugs. I called Lockwood, the USA Rotax importer, and their
very capable tech support told me to run this engine at 5500 RPM
static. Anything less, he said, was like pulling a huge trailer with a
Volkswagen. I was lugging the engine, he said. At 4500 you are only
getting maybe 60 horsepower. I set the prop flatter, to achieve the
5500 static RPM and the difference in take-off power is dramatic. It
jumps right off. I think you have to just be attentive to throttle
setting in cruise. You may need that power sometime! If you set your
static RPM that low you are cheating yourself out of horsepower, and
this could even be a safety issue. I am flying a Sky Ranger which is
not very "clean" so I do not have the over speed problem. I think your
airplane is perhaps cleaner, and therefore you can overspeed the
engine. There are always trade-offs! Mine maxes out in cruise at just
about 5800, and climbs at about 60 MPH at 5500, with the nose nice and high!
Jack
sonny wrote:
>--> RotaxEngines-List message posted by: sonny <lostpilot28@yahoo.com>
>
>Hello,
>I have a Pulsar XP with a Rotax 912UL. When I first bought the plane it had a
GSC 2-blade prop but I switched it to a 3-blade carbon fiber prop (made by the
same company as Kiev props). After installing the new prop, I initially set
the static RPM for 5200 like the old prop, however on takeoff I nearly over sped
the engine when I started to level out. I believe it was set at 22 degrees
or so (it was a long time ago). So I tried several different settings to get
the max in-flight RPM of about 5700.
>
>OK, here's the downside: My static RPM is about 4400. During takeoff it still
accelerates quickly...the RPMs are usually around 4800 - 4900 on climb out.
I would much rather prefer the RPMs to be in the higher range to maximize takeoff
power, but so far I haven't noticed a problem with the lower RPMs.
>
>My questions are, do any of you have your static RPMs set this low? Does anyone
think it's a problem that they're that low? I'm getting ready to move from
sea-level to an airport that's at about 4000 ft. Should I set the static to
be around 4800 RPMs and be careful not to over speed the engine at cruise? I
don't like this idea as it's easy to get distracted, and Rotax recommends tearing
the engine down in the event of an over speed. Any recommendations or advice
is welcome. Thanks.
>
>Best regards,
>Sonny W.
>Pulsar XP N912SS
>
>
>
>
>
>
>
>.
>
>
>
Message 6
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| Subject: | Re: Initial oil fill on new engine |
--> RotaxEngines-List message posted by: <rparigor@suffolk.lib.ny.us>
Hello Hugh
I think if you follow the manual, there is potential to damage your motor.
Search here:
http://www.rotax-owner.com/sdocs.htm
SB-912-036 Inspection for Correct Venting Of The Oil System For Rotax 912
& 914 Rev. 1 8/2002 206
It has been established that damage of the engine valve train on the
ROTAX 912/914 series engines may be possible due to incorrect venting of
the lubrication system. Click Here for more info.
Allocate yourself some time, and search "ALL" information on your motor.
Read a few a day and update your manuals as you go.
There are a few things where following your manual is not the best thing
to do. You need to follow an updated manual.
Ron Parigoris
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