These are the main drive shafts. They're turned from 1" round 6061. One end is 1" diameter with a 0.348" radius 5 hole 4-40 bolt circle; this matches the wheels. The middle is turned to exactly 0.375" to fit a ball bearing that is set in the outer rib. The other end is drilled out to 6mm to fit the motors and has a 6-32 cross drill -- clearance hole on one side and tapped on the other -- which matches the hole in the motor shaft. These are definitely the most labor intensive part of the robot so far.
These are the main drive shafts. They're turned from 1" round 6061. One end is 1" diameter with a 0.348" radius 5 hole 4-40 bolt circle; this matches the wheels. The middle is turned to exactly 0.375" to fit a ball bearing that is set in the outer rib. The other end is drilled out to 6mm to fit the motors and has a 6-32 cross drill -- clearance hole on one side and tapped on the other -- which matches the hole in the motor shaft. These are definitely the most labor intensive part of the robot so far.
