Need for idler hub on track system?

Community General Discussions
1

I need to build a conveyer belt system for a science project, and am looking at the tracks here. I was told that I need a passive idler hub; but I don’t see one used on, for eample, the tri-track chassis assembly.
What does a passive idler hub do, as compared to just the universal hub?

p.s. I’m very new at this, so sorry if this is a dumb question - any advice will be MUCH appreciated!

2

A passive hub is one that is not connected to a motor. You will see they are used in two places on the TriTrack chassis.

They are in the two lower positions in this image.

From this guide.

lynxmotion.com/images/html/build115.htm

Your application may only require a motor on one end, and a passive hub on the other. 8)