LEGO Battlebots
Beyblade introduction
Pieces you are allowed to use the following parts to make both the spinning top and the launcher.
Note: You do not need to use them all.
Launcher construction:
Use the long yellow beam, an axel, a gear and the handle to spin the gear.
Top construction
Use an axel and some gears and test spin with your fingers. Once it spins well, try launching it with the launcher.
Here is a solution to the challenge: