I was “cadding” a new drive train for my robot when I realized that the 4" high traction wheels were slightly smaller than the 4" omnis and they did not touch the ground when in the middle of a drive train. Is there any way to make them touch the ground? @_@
This issue has been raised on the forum previously. For some of the solutions people came up with see https://vexforum.com/t/chain-drive/19192/1&page=6
(You are looking for about midway down page 6 and page 7)