All the gears grind, everything grows, once assembled and running you hear a squeak but keep going and then it picks up speed to make a small generator work properly with sound comes with adapters Supplied for different sized plates, but you will need to disassemble the center to change the size of the gear. There is a trick to turning all 3 long screws and screwing them into the speed limiter. Simply turn the gear on the base down and all 3 long screws will start turning to screw the speed limiter top plate into the speed limiter. The hardest part was building the speaker cone. It was like fighting an 8-legged animal.
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