i had one on a shock flyer,i used a tsunami 10 esc and 3s1p 800mah lipo with an 8x4.7 prop,it would pull it vertically until it was out of sight!,it depends what you want to do with it but on something really light they are excellent.i do feel however that they are a little expensive,i have just bought a bell outrunner brushless motor and esc from robotbirds.com for just £19.50 and it is a lot more powerful than the typhoon but not as good quality but at that price it's worth a look,when you go to the robotbirds site look on the left and go to the 'deals' section,you'll find it there.