ORIGINAL: shanes300
I fly the 16x4w on my saito 100 so I would suggest the 15 for the 91.......14x4 works good too.
YardDart is flying a Funtana with a 91 and the 14x4W with 20% fuel...... Its Awesome!!!!
What RPM is YardDart getting on his 91 w/ 14x4W? Would that over-rev this 4-stroke? Saito website posts rpm range up to 11500. I think the 91 will not exceed this rpm w/ the 14x4W on the ground, but would get awefully close in the air. I am getting 9800 w/ 15x4W on the ground. I assume I will get 11000 w/ 14x4W on the ground. I don't know how much it would unwind in the air going full speed. My friend had an Saito 80 swinging MA 12x6, and he has broken his valve in the air twice, I assume it's due to over-reving.