Hi Ira,
Very interesting info. Do you have any more background on the following
topics:-
> rebuild (service) carbs every 600 hr - Should any parts be replaced? The
pins on my floats seem to be wearing significantly.
> gear box should get replacement spring washers at every service, i.e., 300
> hrs - What is the reason for this? Is it anything to do with the slipper
clutch friction and consequential wear on the sprag clutch?
> Do not bother with coolant temperature measurement. Mark Beal of Skydrive
UK Rotax distributor, suggested that EGT measurement was not required on the
912s and 912Ss, because the mixture was not controllable. I also understand
that we should aim to keep the coolant temp at about 90*C and the oil temp
at about 95* - 100*C, in the cruise.
Many thanks,
William
----- Original Message -----
From: <irampil@notes.cc.sunysb.edu>
Subject: Europa-List: EGT temp difference unknown, but 30C CHT difference is
normal
>
> Disclaimer - Not PFA or Europa Club Directorate Approved Knowledge
>
> UK Builders Please Avert eyes
>
> From Eric Tucker (Chief Technical Officer, Kodiak, Rotax's only Western
> Hemisphere Importer)and Phil Lockwood (CEO Lockwood Aviation, Rotax
> Approved Engine Repair Station)
> During Rotax Maintenence Seminar, Airventure 2004
> (NB there were at least 6 Europa Owners at forum out of about 70 people in
> tent)
>
> 30 degree C CHT difference is normal -> Use only the rear CHT (hottest)
> for decision making.
> CHT > 240F will soften head castings despite manual
> EGT in cruise should be 1350-1450 for 912s
> Do not bother with coolant temperature measurement
> Do not use Castrol GPS oil
> Pensoil MC oil is fine despite not being listed as semisynthetic
> Honda mc semisynthetic oil is also just fine but will never appear in
> approved list
> TCP additive is fine for engine when using leaded av gas, but it may react
> with
> plastics in tank or tubing to engine
> set Idle rpm to 1400-1800, not lower despite manual
> Synch carbs every 100 hrs
> rebuild (service) carbs every 600 hr
> always start engine at idle to allow function of enrichening circuit
> do not bend carb idle stops, make sure quadrant stops protect card stops
> at idle position
> otherwise idle will get desynchronized
> never, ever turn engine backwards!!!!! oil pump runs backward and will
> embolise air into engine
> this is very bad despite advise on web to do so!!!
> gear box should get replacement spring washers at every service, i.e., 300
> hrs
> when replacing oil filter, rotate to touch gasket, then no more than
> 3/4ths turn
>
>
> Ira N224XS
>
>
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