ORIGINAL: CGRetired
The thing flys great with the .75 so a 1.20, I believe, would ba a tad much for that plane. I was thinking more on the order of the OS 91 Surpass II looks like a pretty good match.. the output power is about the same.. I don't know. Still hoping for some good recommendations. Although the Saito 1.25 looks like a good engine too. Thanks for the recommendation.
CGr.
You're right on track with the 91 Surpass. That should provide comparable power output. I'm personally a Saito guy, but the OS engines are really good quality engines! Take a look at the Saito 91. It's over three ounces lighter than the OS (about the same weight as your current engine) and has a little more power output that the OS 91.