....getting back on tract for a moment....(
)....the last of the 6550 ringed
series came with the slightly smaller muffler. These engines put out a tad more
power than the early offerings. The later engines (Modeler Direct) would pull
the 11-8 prop nicely....the older engines turned the 11-7 1/2 to better advantage.
The engine in this ancient scratch built plane of mine is my original K&B .61.
It's on the third crankcase replacement, and 5th rebuild.
FBD.
