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Originally Posted by Mr V
From my understanding the original AndyMark fields did ocassionally break the rivets that held the polycarb panels which are a structural element in the AM field. I believe that they uprated the rivets used in the production versions because of this.
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Some of the riveted connections on the single original prototype field failed during a FIRST-supervised stress test, when a robot was intentionally and repeatedly slammed into the field wall after it had survived an off-season competition. That's the kind of thing prototypes and stress tests help find. The production field design addresses that weakness and others (plus a few small cosmetic/convenience features).
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There are zero pins holding the traditional field together this season.
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The connections between the year-specific corner walls and the rest of the field are still the same sort of drop-in tubing "pin" that has always been used on this size field. That interface isn't likely to change as long as the old welded fields are still in regular use.
There are also indeed still zip ties holding things together on the year-specific parts. That too is unlikely to change unless a catastrophic event occurs because of them...or unless the Robot Inspectors get authority over the field. ;-)
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I do not know for certain if there are any pins in the AndyMark field because I have only seen the flyer and not seen one in the flesh.
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In addition to the structural pins I already mentioned, very small pins are used to help keep the alliance wall polycarb panels from flexing or vibrating out of their slots.