Goldberg Chipmunk CG and Prop
DKflyer
I checked the plans and it shows a CG of 3 11/16" to 4 9/16" back from the leading edge or 1/4" ahead to 1/4" behind the wing spar. I have not had a lot of time on the .91 with the 14x6, but I have not seen a big difference. I comes in nice and slow to land but flys real nice, vertical is limited but flys very scale. I did add 1/2" to the rudder with pull-pull system. I moved the alir. servos out into the wings, one each side. I added flaps but have not played with them much yet. Hope this helps. If you have any other questions, let me know.
Gary