Vintage O.S. MAX FX 91 w/ O.S. E-4010 Muffler RC Airplane Engine Not Tested ASIS

Excellent 1946 Wasp (6-Bolt) Opposed Twin .60 Spark Ign. Model Airplane Engine

OS 25 RC Engine w/ Muffler

FOX .50 r/c airplane engine

OS Max FP 40 RC Airplane Engine with E-3030 Muffler in Running Condition.

Thunder Tiger GP 42 2-Stroke RC Engine, a OS E-3030 Muffler in Running Condition

Vintage O.S. MAX 45F w/ O.S. 743 Muffler RC Airplane Engine Not Tested ASIS

ENYA 35-4C 5.86cc open rocker 4 stroke glow engine for R/C airplane used