I've got a 1/4 Scale Sopwith Pup, about 14lbs, currently powered with a Zenoah G-23. With that small of an engine, it has 1.25lbs of lead on the front. I want to use an 18x5 or 18x6 prop.

What does US Engines offer that is competitive with the G-26? I heard somewhere that the US 25 was being obsoleted. Please correct me if this is not true.

Thanks,
Greg

US Engines only has the 35 cc and 41 cc engines. The 25cc was discontinued at the end of 1999. They have not made a replacement for it.