RE: Looking for Cox .049 mods?
Back in the early 70s my father converted a Cox Baby-Bee to rear rotary valve. I ran like it was on steroids but the little parts and lack of metallurgy made for the small parts to wear out quickly. It was originally in a plane he built for club mouse racing called the Loud Mouse. It had snap full up & down mechanical retracting landing gear & fuel shut off. It did most of its flying with a Cox DT 049. It still sits in my desk/building bench. Cox made allot of different barrels for the Baby-Bee, if I remember right the #2 was the hottest.