STG,

Like you, "I was just expecting the best from them & wanting some new 2-stroke technology to hit the market". I think that the engine will be just fine overall, and actually can't find anything else to criticize. FYI, the two-way, 90 degree Thunder Tiger 120 muffler weighs 234 grams or 8.25 ounces with mounting screws and lock washers. I would think that the OS 120 AX engine muffler would be close to this weight.

Disco Wings,

I guess you thought that I was bashing OS and the 120 AX engine. As far as OS is concerned, I still feel that they can do better, and I stated why. In the past, when OS was privately owned, I didn't think twice about engine quality or longevity, and OS was my number one choice. Back in the late sixties, I flew a Phil Kraft "Kwik-Fli" with an OS Max H60F R.C. cross-flow engine. I still have my OS 60 FSR that I flew in the seventies, along with numerous other FSR engines. I even bought a NIB 1940 OS K6 ignition engine. I'm not really that old....the engine is one of the few replicas that OS made of their very first engine that was built in 1940.

I have been an enthusiastic OS customer for many years, but I feel that they can do a better job on the products that they offer today.

Bruce