Here is a video showing the testing we have done to the Rhino Track Drive drive base during the past two days. The first half of the video is with the old pulleys (Rev3). The second half of the video used the new pulleys (Rev4).
The pulleys, both Rev3 and Rev4 held up very well during these tests. The only break we had was on a Rev3 pulley after the 2.5 foot drop during the first portion of the video.
Andy B.