I actualy tached the engine and the apc 18x8W was at 8050 rpm
I had a elcheapo dynathrust 20x8 and it made the verticle
even better just like the poulan now but still 2lbs. lighter,
however I did not tach it but I will check the dynathrust
prop next time I fly.I am now building another 017 for my
new gsp katana.

Darin