RE: Lightest .20-.30 2 stroke *Updated*
I don't think you can get lighter than the Enya, and you might as well get the 30ss rather than the 25. With the muffler, mine (I have three) weigh barely 9 oz. Drawback is they are VERY noisy and the air bleed throttles are extremely non-linear. They weigh the same as my OS 25 FP, but put out way more power. However, the OS is quieter and the throttle works better. Even if you put an OS 40 FP muffler on the Enya it is still noisy.
You can get the Enyas with 2 needle carbs now, and I think they increased the size of the muffler. Those are both much needed improvements; the new muffler probably weighs a bit more but it will still be a light engine compared to the others. You can also get them plain or with ball bearings, and the weight difference is very small.
Jim