Prop for Enforcer
Bipelover:
If you are talking about the Balsa USA Enforcer (pusher delta-wing) I have had two each with a Fox .74. Only three props I ran were a 12x6 2-blade, an 11x6 3-blade and an 11x7 3-blade. Best overall performance seemed to be with the 11x7 3-blade.
My experience.
Dan