Just looked at the CTLS POH I have on my iPad and it shows a minimum oil temperature of 120°f.
Not to say it might not be different for different CT Models.*
Just looked and 120°f also for my ROTAX 912ULS2 Sky Arrow.
*And I see Charlie Tango confirmed that.
Shock Cooling
Moderator: drseti
- FastEddieB
- Posts: 2880
- Joined: Wed Jan 07, 2009 9:33 pm
- Location: Lenoir City, TN/Mineral Bluff, GA
Re: Shock Cooling
It's interesting how different airframe manufacturers make up their own numbers, though ASTM rules allow them to set limits different from the engine manufacturer's. In this case, the CTSW POH says 51C/124F, while Rotax says 50C/122F. The difference is below the resolution of most temp gauges, thus negligible. But the CTLS gives yet a third number. So, I have to wonder why Flight Design put that 140 F number on their gauge.
The opinions posted are those of one CFI, and do not necessarily represent the FAA or its lawyers.
Prof H Paul Shuch
PhD CFII DPE LSRM-A/GL/WS/PPC iRMT
AvSport LLC, KLHV
[email protected]
AvSport.org
facebook.com/SportFlying
SportPilotExaminer.US
Prof H Paul Shuch
PhD CFII DPE LSRM-A/GL/WS/PPC iRMT
AvSport LLC, KLHV
[email protected]
AvSport.org
facebook.com/SportFlying
SportPilotExaminer.US
- CharlieTango
- Posts: 1000
- Joined: Sat Jun 10, 2006 10:04 am
- Location: Mammoth Lakes, California
Re: Shock Cooling
My gauge looks like its 122.drseti wrote: I have to wonder why Flight Design put that 140 F number on their gauge.
Re: Shock Cooling
Actually, I like that 120 number, and find it consistent with Rotax. Mathematically, 50 C translates to 122 F. But 50C was given to only two digits, so rounding off to 120F is consistent with the degree of precision documented in the Rotax manuals.FastEddieB wrote:Just looked and 120°f also for my ROTAX 912ULS2 Sky Arrow.
The opinions posted are those of one CFI, and do not necessarily represent the FAA or its lawyers.
Prof H Paul Shuch
PhD CFII DPE LSRM-A/GL/WS/PPC iRMT
AvSport LLC, KLHV
[email protected]
AvSport.org
facebook.com/SportFlying
SportPilotExaminer.US
Prof H Paul Shuch
PhD CFII DPE LSRM-A/GL/WS/PPC iRMT
AvSport LLC, KLHV
[email protected]
AvSport.org
facebook.com/SportFlying
SportPilotExaminer.US
Re: Shock Cooling
My gauge is tiny, it could be the line is close to 140 on the dial but is actually 124. I will check next time I'm out there.
Andy Walker
Athens, GA
Sport Pilot ASEL, LSRI
2007 Flight Design CTSW E-LSA
Athens, GA
Sport Pilot ASEL, LSRI
2007 Flight Design CTSW E-LSA
Re: Shock Cooling
I'm not sure we need to worry about shock cooling with Rotax 912"s in tightly cowled plane like CT's or RV-12's, especially if we are not flying in really cold temperatures.
However, I do think that rapid and full power reductions are generally not necessary and are indicative of poor piloting technics that could upset passengers and lead to bad habits that could cause problems with more powerful and more complex engines.
However, I do think that rapid and full power reductions are generally not necessary and are indicative of poor piloting technics that could upset passengers and lead to bad habits that could cause problems with more powerful and more complex engines.
John Horn
Independence Airpark (7S5), OR
CFII, LSRM-A
Rotax Service, Maint, and Heavy Maint. trained
Flying a CTSW, building an RV-12
Independence Airpark (7S5), OR
CFII, LSRM-A
Rotax Service, Maint, and Heavy Maint. trained
Flying a CTSW, building an RV-12
Re: Shock Cooling
Well stated Sandpiper. Thanks. Opinion as expected, but it's good to hear for confirmation.