Quote:
Originally Posted by Mr. B
So from the general conversation, I am guessing that most if not all of the drivetrains had a dropped center. If so, can anyone give me some idea how much to drop the center. On the KITBOT we used I believe all the wheels touched?  |
Most teams use anywhere from 1/8-3/16 for 6wd & 8wd robots. Sometimes how much drop you use can be influenced by your wheel choice. For example a 4in Versa wheel from Vex has a "W" like tread pattern that will dig into the carpet fibers while a flat surfaced Colson wheel will not. Last year we used the Versa wheels and needed 3/16in of drop in the long configuration to get a decent turn while this year we used Colsons with 1/8in drop that turned like a dream. We noticed our issue last year when we put the robot on the field and noticed all 6 wheels were touching the carpet.
Depending on what wheels you use you can adjust the drop slightly. What I love about Colson wheels is you can trim them down by shaving down the OD of the wheel. Our drivebase this year was originally designed without a drop (doh!!) in a wide configuration and it turned similar to last year's long drivebase with 3/16in drop. We shaved down the other wheels by 1/16in to achieve the 1/8in drop and it works great.