ORIGINAL: FatOrangeKat
quote "BTW that ST .45ABC is a real performer. DO NOT use normal break-in procedures on any true ABC. Only a couple runs using a small prop -- I suggest a 9-6 wide blade, like maybe a cut down 11-6 wood -- and fast runs. Then go fly. ABC is a whole 'nother game when comparing to a ringed engine."
ST gives some pretty specific break-in instructions in the manual. Is this suggesting to not follow their directions?
You do as you please. I do! I seldom pay much attention to school-solutions written for the lowest common denominator.
OTOH, I may well investigate new information as I spoke about concerning the ST 90, and sometimes I find I am in need of corrective direction, whereas I try to NOT ignore that which works better than I was previously doing. [8D]
As an old time CL/FF competition flier seeking peak performance, and even after I became very competitive, when I moved to the Chicago area in '68, I found a world of specialized
modelers that were very professional in their specialties. I just had to soak up as much as I could, yet it was never enough.
Search up some of the CL speed fliers and/or pylon racers in your area. Find out how to make an ABC engine perform as it was designed to do, rather than be just an every-day sport engine for the masses.
Again, good luck.