STRUCTURE AND FUNCTION TRANSMISSION TRANSMISSION - 20 Km/h TRAVEL SPEED SPEC. 1. Screw-fork to shaft 2. Flange 3. Brake cylinder 4. Brake drum 5. Friction disk 6. Flange 7. Gear 8. Cover 9. Output shaft 10. Bearing 11. Gear Specification Reduction ratio: 2.265 : 1 10-11