RE: K&B .61 engine?
FBD,
NNNoticably DOGGED to a point where I was wondering if the K&B was the wrong choice!! When I changed to the 11x7.5 -- the guys at the field (to my pleasant surprise) said the Chipmunk was not flying "scale" cause it was "way too fast" !!!
And "way too fast" is with the engine still running rich with a fast idle and only a gallon of fuel thru it.
root