Quote:
Originally Posted by Daniel_LaFleur
(you may need to add guides to the ends of each roller if it tracks off of the rollers).
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As counter intuitive as it may seem, do not add sides to the belt, it
WILL ABSOLUTELY somehow find a way to ride up onto one side or the other(such a happy accident with my first robot ever in 06)! What you want is to have your drive rollers be slightly ovoid in shape a "crowned pulley", the more egg shaped the less it will drift due to side loads. This link
https://woodgears.ca/bandsaw/crowned_pulleys.html shows how crowned pulleys do what they do.
Watching a crowned pulley high center and automatically adjust a belt as side loads are applied for the first time is like spooky voodoo magic happening right before you. You just want to see it roll off the side but nope it just chills out in the middle.