twtaylor -

An OS140RX will do fine in a Focus. A couple of years ago Peter Collinson used this combination while flying FAI, so it definately has the power. For getting back into pattern I recommend using the OS - just fewer moving parts. The YS DZ engines are amazing things to behold, but are a little more involved in set up and love 30% nitro (which ain't cheap).

If you plan on using your Prophecy, you will have to do major surgery to the belly in order to accomidate the longer 2 stroke pipe. That might influence your decision. The YS 140 Sport will work well in the Prophecy and I'm sure you could reuse you old header and pipe combo. The Sport is cheaper than the DZ's and will have plenty of power for the "narrow body" models.

BTW our NSRCA district 2 VP is Robert Gainey. You can e-mail him at: [email protected] to get info on whats going on. I believe we have a judging seminar scheduled for this winter Jan/Feb.

Mike Radeke