David-aviator
Well Known Member
....does the 912 ULS have break away clutch?
My understanding was that the slip clutch in 912 was an option whereas in the 914 or other higher models are standard. Of course I could well be wrong on this.David-
Yes, .... The Rotax 912ULS has a slip clutch consisting of stacked plates very akin to a wet motorcycle clutch ... with the exception there is no mechanical release. The stacked plates are under constant pressure and designed to slip at a predetermined force to protect the crankshaft in the event of a prop strike.
My understanding was that the slip clutch in 912 was an option whereas in the 914 or other higher models are standard. Of course I could well be wrong on this.
Depends on the model designation (and there are quite a few) of the 912.
On the ULS it is standard.
Scott,
Another subject....what fuel does the factory use in the RV-12?
Scott,
Another subject....what fuel does the factory use in the RV-12?
We have a 100 Gal tank mounted on a small trailer that we keep in the corner of our hangar.
We purchase 91UL with 10% ethanol from a top tier brand station in the small town of aurora about 1 mile from the airport.
We have been using 91UL E10 in this manner for about 10 years now.
We have seen zero indication of ill effects with using the E10 fuel, but we use the fuel at a pretty rapid rate. I would guess that the fuel rarely sits in the tank for more than about 30 days. The exception to that is during the crumby weather winter months because we are flying much less. During that time we try and regulate how many gallons we put in the tank so that it wont site for to long.
We have quite a bit of experience with using 100LL as well. When we had RV-12's based on the east coast, they were operated on 100 LL and Decalin exclusively.
If using E10 fuel there are considerations to be made.
This previously issued Service Bulletin is a good starting point.
Scott -
Does the factory demo RV-12 still have original vented fuel cap or has it been upgraded to the new fuel tank vent?
The reason I ask is that I believe the original vented cap is probably better to control air exchange in the fuel tank when aircraft is parked for extended periods of time.