Problem:

• The previous drive unit was too heavy and excess backlash reduced the lifespan and efficiency of the drive train

Challenges:

• Removing backlash without adding complexity

• Making the drive unit into a sub-assembly independent of the frame assembly

Results:

• Designed and machined (CNC, hand mill) a self-contained belt driven drive unit and tensioner

• Low backlash of belt drive allowed for the removal of suspension, saving 2.5kg per drive unit