I'm glad for CPA--there was a need for those who love the speed and the retracts--now CPA fills that need. Frankly I tired of trying to explain and defend SPA on threads like this one. SPA was founded on the concept of "simple and inexpensive". Yes the 4-strokes were allowed, but as Steve said, (12 years ago), that came about because of noise requirements at our Knoxville contests. The planes look better with retracts, but retracts and pipes are "add-ons", and not "ESSENTIAL" to have fun flying pattern.

Personally, my blood pressure already gets higher than it should be with my SPA planes. I actually prefer a slower, elegant maneuver. A lot of SPA pilots have joined both organizations, and I think they are making peace with each other.

All the best
Duane