Yeah, the sound is a bit like the noise that many plain-bearing engines make when idling (as the crank slides back and forth with the varying thrust from the prop during each power stroke).

I've just posted a pic of the CAP232 ARF you're talking about on our club website and I have to admit they are damned good value for money!

Good to hear that the other size GMS engines are also pretty grunty -- I've got a .32 and there aer a couple of .47s in the club that have yet to be run.

Has anyone in your club had problems with the throttle barrels sticking? My .32 and my mate's .76 both had really sticky barrels that required some remedial work to make smooth.