When I purchased my ‘OSIRIS” EPP ‘kit’ from the lounge room of Mr Schneider, I also got a YAK.
YAK:
It looks like this and has served me extremely well – indoor flying at ETSA park with SSL one Thursday per month and most mornings out on Glenelg Oval.
Runs 2s batteries to power trusty TURNIGY 2204-14T 19g Outrunner with 8×4.3 props. Other bits: