T92 Track Difference

The_Chieftain: I've been chewing on this for a while, and in 1957, I have to say, I honestly can't think of any precedent. Ground idlers were nothing new, look at the Stuart, for example, but they were adjustable.   About the only non-adjustable tracks of any sort I can think of are those running strange suspension systems, such as Strv-103 or MBT-70, where the suspension makes any 'set' tension pointless.   I mean, in theory, I guess they could stretch the tracks enough with track jacks that the suspension itself is permanently causing the tension, which I presume was the plan with T92. I can't think of any other way of ensuring that the tracks stay on for any reasonable amount of time. Presumably also, there were enough flaws with the practice that they added the comp-idler in the end anyway.   As for why it was removed on the survivor... well, I have absolutely no idea.