BigWheel Upgrades

Tags: think, design, and innovate
Personhours: 6
BigWheel Upgrades By Evan

Task: Get BigWheel ready for the tournament

Sunday and Monday were good days to be an intake system for big wheel. Mounts were built to attach both types of intake to the rack and pinion tetrix slide and a new way of mounting the arm to the chassis. The original corn on the cob intake was sized down for the system, and stitched to a REV rail design as opposed to the tetrix and REV rail hybrid it was before. It has yet to be chained up but that should happen soon. The idea is that since it’s attached to the rack and pinion track, it reaches high enough for the robot to put the minerals in the lander. The only issue is that it that we have yet to find an ideal gear ratio for the arm, but we imagine that what we have now will suffice (a small 12 tooth gear to a large 86 tooth gear for that extra torque). We have to work on the actual mount that the arm will attach to, the only issue being space and that there may not be enough of it without either switching to bevel gears or chaining the motors to the small 12 tooth gears. We have yet to decide exactly what we’ll do, but since we may not have the bevel gears we want, it might end up being a chained mechanism. Another addition that is simple enough but quite necessary, is a tail for the robot to be able to stop itself from flipping backwards, something that is a very real danger of the design. It will probably be made of polycarb with aluminum or steel support on either side, just incase the polycarb is not enough to support the push of the robot. Part of this process will involve some code tuning so that the robot stops itself, but the tail is necessary as a preventative measure.

Next Steps

There’s still a lot of stuff we will have to do to prepare the robot physically for the competition this saturday, but I believe it will get done.

Date | November 5, 2018