DIY Assembles Toy Motor Propeller Wind Power Car DIY for Kids 8*11*15cm 4WD Smart Robot Car Chassis Green Energy RC Toy (not Including Battery)
The principle : after installation , connected to the battery , after the propeller turns , move the car forward by air .
Test : when properly installed , wind should blow the propeller direction , if the wind against , you can reverse the power cord .
Finished dimensions : height 8 cm , width 11 , length 15 cm