Hello Again:

           My flying mate flies his LA engines in a solid 4 cycle mode.  These engines break into a nice 2 cycle mode through the maneuvers and go back to a perfect 4 cycle in level flight.  I was under the impression that these ABN engines should only be run in a 2 cycle mode.  If not, the P&C would wear very rapidly.  I can not argue with what I see, as he is getting perfect stunt runs from his OS .40 and .46 engines

           He blends his fuel as, 25% castor oil and 5% acetone.  Notice no nitro.  He has been running this fuel mix since 1991 with no problems!  You should hear his ST .51 and .56 purr on this blend! This blend provides easy starting, very consistent runs and long engine life! I can not question his results as not being positive!

                                                                              When you think you have seen it all...

                                                                               Frank McCune