Half A Proto Speed to AMA rules is gaining in popularity here in Australia as well.
I'll attach some pics, of club members models (mainly Sweepers) and some details of my Profi 049 powered model. I use a bladder and made my own bobbin bellcrank. All work well sofar. The prop is a small APC, but I now have some Wilk carbon fibre two bladers. That Profi is one sweet little motor.