HI ALL any clues for level 51

I love this game but level 51 has got me beat. Help please Thanks

Place electric motor to the left of battery. Place 2 gears above motor and under conveyor belt. Connect one belt from left gear to electric motor and the other gear to conveyor belt. Attach rope from weight ( on conveyor belt) to crossbow, and finally attach last rope from left weight to top of seesaw. Good Luck

Many thanks, i have it now