Good afternoon. I was just wondering if there are any cheap drones (quadcopters or any other drone) with switchable props. It's for a science experiment. We are planning to switch the number of blades on the propeller. Thank you!
Sure - virtually any brushless (FPV type) machine can take 2 or 3 (or even 4) blade props and some toys can. For example, these fit the very inexpensive Syma X5C http://www.ebay.com/itm/252355185604?rmvSB=true Also, if you want more power, you can get something like the XK X251 and then replacement props for it. All you need is the basics of the hub and shaft size. Some of the props even come with plastic washers so they fit various machines. The main thing is usually that you'd want a machine with the standard screw-on prop hubs. https://hobbyking.com/en_us/multi-rotors-drones/fpv-racing-drones/propellers/3-blade-props.html
