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