Quote:
Originally posted by Ken Leung
I still wish not every robot next year will be using that dual motor design. 
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I doubt that every robot will use this design.
Our team gets many inquiries about this design, but many teams will still do their own thing, because of a variety of reasons:
...1. They don't believe that this design works, and they don't have the time to prove to themselves that it does.
...2. They want to do their own thing. So, they take this design and modify it for their own liking.
...3. They don't have the fabrication equipment to make the parts accurrate enough.
...4. They are not sure that these motors will be provided in next year's kit.
...5. They already have their proven motor designs for their drive base (if it ain't broke, don't fix it).
All of these reasons are valid to a certain level... some more than others. The biggest argument I have is with #3. Teams automatically think that they have to meet the tolerances signified in these prints, but in actuality they don't. In order to get one of these things built, you get the parts made as accurrately as you can, then you tweak the parts (file, shim, whatever) to get the assembly to run w/o too much wobble.
Even so... I predict that only 5% of teams will use this design on their robot.
Still... even IF all teams used this design... it would be a good thing, in my opinion. The main reason why we published this design is simple:
This will increase the level of competitiveness of FIRST robots.
Andy B.