Pulley Ratios Calculator - how to use:
• select one or more pair of pulleys
• click 'Calculate total ratio'
• select a motor to see the theoretical output speed

1. Driver pulley: -- choose -- bush 1/2 micromotor pulley wedge belt wheel pulley large      Follower pulley: -- choose -- bush 1/2 micromotor pulley wedge belt wheel pulley large     

2. Driver pulley: -- choose -- bush 1/2 micromotor pulley wedge belt wheel pulley large      Follower pulley: -- choose -- bush 1/2 micromotor pulley wedge belt wheel pulley large     

3. Driver pulley: -- choose -- bush 1/2 micromotor pulley wedge belt wheel pulley large      Follower pulley: -- choose -- bush 1/2 micromotor pulley wedge belt wheel pulley large     

4. Driver pulley: -- choose -- bush 1/2 micromotor pulley wedge belt wheel pulley large      Follower pulley: -- choose -- bush 1/2 micromotor pulley wedge belt wheel pulley large     

5. Driver pulley: -- choose -- bush 1/2 micromotor pulley wedge belt wheel pulley large      Follower pulley: -- choose -- bush 1/2 micromotor pulley wedge belt wheel pulley large     

6. Driver pulley: -- choose -- bush 1/2 micromotor pulley wedge belt wheel pulley large      Follower pulley: -- choose -- bush 1/2 micromotor pulley wedge belt wheel pulley large     

7. Driver pulley: -- choose -- bush 1/2 micromotor pulley wedge belt wheel pulley large      Follower pulley: -- choose -- bush 1/2 micromotor pulley wedge belt wheel pulley large     

8. Driver pulley: -- choose -- bush 1/2 micromotor pulley wedge belt wheel pulley large      Follower pulley: -- choose -- bush 1/2 micromotor pulley wedge belt wheel pulley large     

9. Driver pulley: -- choose -- bush 1/2 micromotor pulley wedge belt wheel pulley large      Follower pulley: -- choose -- bush 1/2 micromotor pulley wedge belt wheel pulley large     

10. Driver pulley: -- choose -- bush 1/2 micromotor pulley wedge belt wheel pulley large      Follower pulley: -- choose -- bush 1/2 micromotor pulley wedge belt wheel pulley large     

Calculate total ratio Reset

Show speed for -- choose a motor -- Micromotor [2986] Motor 9V [2838] 9V Train [590] Mini-Motor 9v [71427] Mini-Motor 9v [43362] Motor 9V Geared [47154] RC Motor [8292] - innermost output RC Motor [8292] - outermost input NXT Motor [53787] PF Medium [58120] PF XL [58121] motor: