ORIGINAL: combatpigg
Try DELPHI FORUMS, which is a control line speed chat room if you want the low down on engine setups. Those guys look at their airframes as neccesary evils, more or less, most of the focus is engine related. NASS is North American Speed Society, a good source of info too.
That makes sense... since CL speed is basically just an engine on a string. But I'm not patronising here or anything... the speeds they achieve are simply awesome when you take everything onto account.
Flying pylon involves a whole lot more than just going fast... piloting comes into the picture... perhaps that is the biggest difference between CL speed and RC pylon. In RC pylon, having the fastest plane does NOT guarantee a win...