Ok here it goes,
I promised that I would get back after I flew the plane with the 26 on it.
The Plane is an ancient SU26 scratch built by one of my friends, it is heavy. At 74 inches it weighs 13 pounds on the dot wit the 26, now at 6800 feet altitude, this makes a sluggish combination.
The 26 started right up and was running well.... and that is basically where it ends, It ran well thorough all the 3 10 minute flights it did not stumble, go rich or go lean. Throttling was good trough and it felt like it was getting more reliable and stronger.

After the 3 flights it was tacht again, and showed a 300RPM increase, turning an 18X6 Menz S 7700RPM.
A good motor for the money if you ask me, if you are however looking for all out performance, get something else.
Regards
Andreas