campaholic, my dad has built several and has had 2 or 3 on floats. A 60 is plenty of power. We have added bigger engines, but don't really notice any speed difference. He flies in Royston...

Proptop, the OS 70 is one of my favorite engines, the FK should fly very well on it. It is no speed demon But there will be no problem getting it up in the air.....