It is part of our team culture. We have traditionally been a team with some amazing sponsors, and very rudimentary tools in house. We have no choice but to detail everything out, get it right the first time, and get it drawn quickly. Sponsors need detailed models and drawings. Not seen are the detailed drawings of every part on those robots required to get the parts made. This is slowly starting to change as we get better tools in house. We’ve gotten good over the years at spreading the load to speed up design and maintain the high standard needed to succeed. More experienced CADers work with mentors to do the high level design and mechanism design. After that is done, it can be passed on to students at other levels who can draw axles, spacers, and add rivet holes.
The year, for example, we had the robot that we competed with essentially completely drawn, and all the major parts out to sponsors by the end of week 2. We then got 3 week turn on some of the parts, 2 week on others, and spent the last week assembling our robot. Most years, we only get a couple extra machined parts after the big run of parts.