Having trouble with limit mates in 2014. Imagine a set of railroad tracks and a rail car. There are stops at each end of the tracks that limit the motion of the rail car. My initial thought was that I could put a limit mate in from BOTH stops, with zero as the minimum and an excessively large value as the upper limit. It SEEMED that this would limit car motion between the stops but give me the freedom to change lengths, etc. without losing my mate functionality. Didn't seem to work so I got around it by putting in a single mate with the actual values.
Now, design parameters have changed. There are now two pair of rails. One pair is fixed, but the other pair is on rollers. Goal is to push rails together until they touch then roll the car from one pair to the other. Once done, need to back the rolling pair of rails out (so a door can close.) Net result is that the distance between stops is variable. Is there a way to set this mate up?