rail rider

Hey all. 2nd-year scout dad here. I won our troop's outlaw division last year, so now I have to make sure I improve on last year's design. I've been thinking about friction points and how to minimize them, and had a thought about the contact point against the rail. I tried to research it, but I...

We won pack our first year with a rail rider, extended wheel base, 1.25 COM from rear axle, wedge. This was on a 42 ft best track that had a few rough spots. District was on a 35 ft best track that seemed to be fairly new and set up well with no apparent rough spots or alignment problems...