Back in the 60s my first non cox engine was the .09 cl engine pictured in
gcbpost #6. Tehn I owned several .35 non ball bearingcl engines and 1 .29 rc engine. Really liked them. Then I went to O.S and Super Tiger when the LHS stopped carring them and carried the others instead. The guys I flew with thought that the Enya's were just a little stronger than the OS's, but that was strictly subjective.
Thanks for posting that picture
gcb. Old memories