I want to thank all of you that participated in this discussion. I personally
have
to say I have learned a lot in the subject of operating a Europa with a GA
prop.
I think that of particular value has been all the data received regarding
RPM/MAP
and speeds for the Europa monowheel.
The discovery of the latest Rotax SL-912-016 is of particular interest. I still
need to read this SL in detail but the chart presented is a total departure from
all the information presented in the past. If I interpret it correctly, with
RON 95, you have to be at 5500 RPM to be 100% sure you will not have a
detonation
event at WOT. On the other hand, anything over 4000 RPM with RON 98 @ WOT
is safe.
In the usual Rotax way, it leaves you scratching your head but I welcome the
change.
For now I decided to switch to premium 93 octane (US) straight E10 fuel.
I was using 50-50 ethanol free 90 and premium 93 but in light of this chart I
think the gain is safety, while I experiment with my prop, is huge if using the
higher grade gasoline.
But one set of data is of particular interest to me and would like to discuss
further:
JohnFrance: Your claim of being able to cruise at 5100/28" at 135 kts
(indicated?)
while still climb 5200/WOT at 65 kts is amazing and want to learn more. I
do have a DUC Swirl that makes similar claims and once I finish testing my
Woodcomp
(which is not looking very impressive so far) I will try the DUC. But would
like to learn more about this EProps V20.
Great thread guys. this info is so important for those getting started with
operating
a Europa. (my next topic will be fuels :) )
Best Regards,
Chris
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=501525#501525
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