This is a mailing list for people interested in Ultralight or Microlight aviation. Topics include everything related to ultralights, microlights, and Sport Pilot.
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... Rotax seals will fall off the crank at about three hundred hours or 5 years,,,,,,,,,,,so that is a limiting item. Stuck rings can occur faster with low EGT
Anyone have two Powerfine "B" blades that are too short for your application? I need a Powerfin at 54" diameter so ssend pictures of what you have. Reply off
... don't turn all 'drama queen' on us oil isn't that big of a deal compared to all the other much more likely scenarios of how to not fly ULs,,,,,,,,, I still
... yea but, I bet his chainsaw runs alot harder than your UL engine to. Spins about twice the rpms, and quite likely that it goes from dead cold to screaming