Comment on "Thirteen grand over Portal Peak with a 447. (engine off)"
for more discussion on this photo, click HERE We were initially unable to "Feature" this excellent photo directly because it was not uploaded initial...Comment on "Efficiency: Perfect pitch UAVs and airboats lead to new propellers (at least some good from UAVs / Drones)"
...ring trike. he was explaining to me why a rotax 447 puts out to much thrust for m...e length of the compression stroke. rotax 447 has a longer cylinder and pis...should do the job just cant use the rotax 447 id risk bending battons.iam n...