...and fun! If someone was to ask me if I'd do the OS70 to Saito91 swap again, I'd say I wouldn't have installed the 70 in the first place. This is in no way a knock against my 70 Surpass, it performed flawlessly. The 91 just makes more power for the same weight. Now, instead of turning a 13x6 prop at 9500rpm I've got a 14x6 at 9500rpm.

The OS70 now rests in a yet to fly U Can Do 46.