I don't either. I have 200 hours behind a fan cooled SINGLE IGNITION 503 in a Tierra!...I have no issue with a Rotax...
I don't remember doing a lot of autos in it. I did do a few to power recovery and I remember it doing just fine.... Bryan how does it auto? what is a good mininium speed for autos? Surely its not like the Mosquito autos?
How you do you counteract this issue?HJ,
As you know, the Mini-500 rotor should be kept as close to 100% (546 RPM), from liftoff to a hover, during all flying, and all the way till landing and sitting on the skids for shutdown.
Are you aware that when you lower the collective to do a normal descent, at 546 RPM, the carburetor closes proportionate to how much you lower the collective EVEN THOUGH ENGINE AND ROTOR RPM IS KEPT UP to 546?
After you takeoff and climb out ( on the main jets and at 546 RPM ) then you level off to cruise ( still at 546 RPM ). At this cruise setting, the carburetors are just BARELY above the point where the main jets hand off the responsibility to the jet-needle/needle-jet team. Your engine is running on the main jets but just barely.
Then you get where you are headed and get ready to descend and land. You lower the collective a little (still keeping 546 RPM) and believe-it-or-not, you are now on the MIDRANGE jets. I.E. the jet-needle/needle-jet team. This is usually when a seizure happens.