ORIGINAL: Nathan_L
I'm about 75% thru putting my Osmose together.
I'm down to deciding what to do for an engine. I had wanted to use a YS .63 but they aren't available right now and the new ones (the YS .70) are still a few months out according to Central Hobbies so I'm not sure what to do now.
I've got one of the OS FS .72a 4-strokes on my Great Planes Big Stik 40 which weighs in at 5.57lb and with a 12x7 prop spinning at approx 10,800 it really hauls it around.
I was thinking of trying the same engine in an Osmose 70 but i am also thinking that the OS FS .81a with pump might be a better choice with the inverted install and tank on the CofG.