Originally Posted by
fiery
HI Dave!
Needs more prop for sure! My Taipan 11 x 5 works great with an ancient OS FS 40 ... but no more of that story, this is a SAITO thread! I've sent a PM
re props.
Check out my CH converted Saito RD-450
https://www.youtube.com/watch?v=-WpUQT4XTs8
l use a 12X5 on my .50 Saito, on a Goldburg Cub with plenty of power. l don't see why the .40 will not pull a 12X5 EZ. l run a 11X4-12X5 on my Pizza Box's. l run them a lot on trainers and sport planes. Good little motors