Jim:

Ok on the 50 Degrees of flap on landing...How much do you use on takeoff?..Right now I have 10 degrees for takeoff and 20 degrees for landing...On the engine spacing for the nacelles,best to measure for 10" props...Mine were spaced for 9" props..Big mistake because I changed engines,so I needed bigger props. I can swing a 9.5 on the inter nacelles and a 10" on the outer nacelles..Had to reset 2 firewalls in order to obtain prop clearnce...One more question Jim,what is the advantage of 3 bladed props? I agree with you on the 4 stroke engines..If I could,would use Saito's 40- 4 strokes engines...nice package....thanx. again..