Which 4-stroke to purchase?
Checked the stats on the 91 Vs the 70
Saito91.......520 g
OS 70 II......560 g
when I bought my saito that was my reasoning, after a couple 100 flights I am sure it was the right decision for me.
Im sure there is differances in the wieghts of the engines nib.
Just no way I'll pay the same amount ($10 diff) for a .70 when I can have the .91.