[EricH]

Originally Posted by sanddrag

Eric, do you have a link to this response?

Too busy building a robot to look it up, eh?

http://forums.usfirst.org/showthread.php?t=14011

Based on <R08> specifically referring to traction devices and not referring to any other component of the robot, and the fact that that is the only rule covering field damage due to robot parts (other than the general "don't cause damage to the field" rules), I would actually say that provided the frame doesn't damage the field, this design is fully legal, with two exceptions, which I'll cover later.

To clear up a little bit more on the frame perimeter/articulated drive question:
http://forums.usfirst.org/showthread.php?t=13951
http://forums.usfirst.org/showthread.php?t=13809
http://forums.usfirst.org/showthread.php?t=13956
http://forums.usfirst.org/showthread.php?t=13955 (read whole thread or last answer, your choice)

The first thing that is probably illegal so far is that in the current configuration, the frame perimeter is changing as the lift moves.

The second thing that is illegal is the fact that the entire drivetrain is outside the current frame perimeter (see <R16>).

Both of these issues are easily fixed by putting a rigid frame for the bumpers out beyond the sliding scissors lift bars at about the same level. Make sure that 1) it fits in the sizing box with its fasteners and 2) the drivetrain fasteners are all on the inside of the vertical projection of that frame. (Big discussion here, multiple Q&A's, and the long and the short is that <R16> only has one exception--fasteners inside the bumper zone.)