ORIGINAL: rainedave
I think this particular engine most likely produces more torque at higher rpms than some other sport .45's, e.i., it has a flatter torque curve.
I can't say how it's torque compares to other engines at higher revs but mine turns an APC 10x6 at 14,600 with 75/25 all castor fuel. However, just for laughs I tried a comparison against a new Enya 60-IIIB with both a 12x5 and a 13x6 props. The Enya of course is a baffled piston low down grunt stunt engine. Or so I thought.......
Enya 60-IIIB
12x5...9300
13x6...8600
ST GS45
12x5...10500
13x6...9100