I have a question you RV-12 E-AB builders. Has anyone considered installing the Rotax 912 iS Sport instead of the 912 ULS? How much would have to be changed to make the iS Sport fit and how much added difficulty would that cause?
Yes! If you are a first time builder it would be very difficult.
Fuel system would be different.
Weight & balanced would be different.
Empty weight would be higher.
Cost of engine about $4000 more.
Cowl would be different.
Electronics would be different.
Increase build time by about 500 hours.
Etc, etc.
Fuel system would be different.
Empty weight would be higher.
Weight & balanced would be different.
Cost of engine about $4000 more.
Cowl would be different.
Electronics would be different.
Increase build time by about 500 hours.
I would also think there may be some wiring and configurations in the Skyview that would need to be taken care of.
From what I recall from about reading - the IS has some upgrades available just to get it to the power of the ULS so what's the point unless you just can't stand the idea of a carb(s).
I think the turbo Rotax is about 30lb heavier.
From my morning read in KitPlane changing out engines on a designed platform is not for the faint of heart. The article stated that insurance would be an issue and that the fly off would increase (the article eluded to a 25 hour eab if not to many deviations to a 40 if you change the PP - I've read about the FAA being liberal with fly off periods but have no experience with it... yet).
(the article eluded to a 25 hour eab if not to many deviations to a 40 if you change the PP - I've read about the FAA being liberal with fly off periods but have no experience with it... yet).
Ah - my comment about the upgrade was to get the IS to the sport version. New mapping and air box I believe. Sorry about that.
Mel - I'm pretty sure the USL is not a certificated engine. My understanding is that's quite a bit more money. What gives? For ELSA is the rule ignored?
Nice movie from Rotax-Owner about installation of a 912IS in a CH750 and with that the redesign of the fuel system -> YouTube
Nice movie from Rotax-Owner about installation of a 912IS in a CH750 and with that the redesign of the fuel system -> YouTube
The cylinder HEADS are liquid cooled.