RE: OS 33GT Gasoline Engine for Pattern
The Evolution 33 looks like it should be a good contender -
I used the 26 with the pipe (Ed's and power was excellent as well as throttle response throughout the entire range-in a 9 lb model excellent power even at 4300 ft.
It actually pulled one of my big ol EXCESS models pretty well - not good enough for FAI tho- 9 lbs was maxed out.
I like front induction setups and the Evolutions I had were very good -except for early ignitions they were goofy