RE: ??? On APC Props
Hi!
A 16x6 is way too small for a SAITO 180...that prop size is for 20cc (1.20) four strokes ..or maybe YS 110 engines.A 16x8 or preferable a 17x8 or 17x8N APC prop is a good choice for most scale aerobatic models.
Regards!
Jan K
Sweden