Ultralight Engine Options

[mrbarry]

Is there anything specifically prohibiting an enclosed cockpit on a part 103 ultralight?

no , its just the weight limits, by the time one builds a good strong wing , has an adequate crash cage and hangs on 5--60+ lbs of engine there is not a lot of weight left for faring..
skypup is cute https://groups.yahoo.com/neo/groups/Skypup-club/info

here is an example for the well heeled ,

http://windward-performance.com/spar...pecifications/

+5 /-4 , l/d 37/1 Vne 123 knts ,Empty Weight – 155 lbs

i have seen motor glider tests with this airframe & a Hirth F33 [45 lbs w redrive & electric start]
it is all kevlar and carbon fiber.. fixed engine pylon .