Brushless Motor Ratings

[daveimi]

Been looking at a lot of the hobbyking 28mm and 35mm ish sized stuff and a lot of the shaft diameters appear to be something of an inch (pet peeve of mine). However just found a fingertech blade mount I can get with paypal and the guy apparently can drill them to what you need. Want to build something that doesn't need a pully, just mount straight to the motor. I know that's not the best idea but it's a start. Want to use a light blade at high rpm as an undercutter. Something like alex's robot or sam's.

[Eventorizon]

Been looking at a lot of the hobbyking 28mm and 35mm ish sized stuff and a lot of the shaft diameters appear to be something of an inch (pet peeve of mine). However just found a fingertech blade mount I can get with paypal and the guy apparently can drill them to what you need. Want to build something that doesn't need a pully, just mount straight to the motor. I know that's not the best idea but it's a start. Want to use a light blade at high rpm as an undercutter. Something like alex's robot or sam's.

Don't do what I did with that under cutter beetle... bad idea! I did that so I had something besides a pushing box.

Mounting something directly to the motor in a FW is generally a bad idea because the shafts will never be thick enough to take the loadings. I wouldn't get a FW motor with a shaft that is less than 6mm, and even then I might want to swap it out for something thicker. I swapped C3's shaft from 6mm steel to 10mm Ti.

Doing it in a beetle is viable if you are careful. Just make sure you get it right or you will fine it will break very quickly.

Are you trying to build a beetle or a feather btw? You have asked about both so I'm now confused.