Difference between revisions of "DEWBOT VIII Drive Train"
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While not a specific strategic requirement, it was perceived that the ability to drive in the narrow orientation would make crossing over the Barrier safer & easier. | While not a specific strategic requirement, it was perceived that the ability to drive in the narrow orientation would make crossing over the Barrier safer & easier. | ||
| − | Furthermore, if pivot drive was used, it was decided that the shooter would be aimed my rotating the robot, rather than via a rotating turret (not applicable if tank drive was selected). The logic was that pivot | + | Furthermore, if pivot drive was used, it was decided that the shooter would be aimed my rotating the robot, rather than via a rotating turret (not applicable if tank drive was selected). The logic was that pivot drive enabled the entire robot to become a turret, so we should exploit this and avoid a redundant turret. |
[[FRC Team 1640 | Team 1640]]'s signature [[4-Wheel Pivot Drive | Pivot drive-train]] seemed to meet some of the game's requirements very well (especially driving in either wide or narrow orientations), but how would be get over the Barrier? 1640's pivots had always used 4" wheels in the past. | [[FRC Team 1640 | Team 1640]]'s signature [[4-Wheel Pivot Drive | Pivot drive-train]] seemed to meet some of the game's requirements very well (especially driving in either wide or narrow orientations), but how would be get over the Barrier? 1640's pivots had always used 4" wheels in the past. | ||
| + | |||
| + | ==Reflection== | ||
| + | Crossing the Barrier is a Need? Really? Yes, it is certainly do-able, but this capability is likely to be expensive in terms of mass, cost and compromises made to other (perhaps more critical) capabilities. | ||
| + | |||
| + | ==Concepts== | ||
| + | Initial concepts included: | ||
| + | :# A 6wd wide chassis (like [[DEWBOT V]]) with 8" Pneumatic wheels (or larger) | ||
| + | :# 8" Pneumatic wheels (or larger) in-line with pivots, either outside or inside between, either undriven or driven | ||
| + | :# A ramp and skid-plate in-line with pivots and between them | ||
| + | :# Redisign pivot drive for 8" Pneumatic wheels (or larger) | ||
| + | |||
| + | It was decided to pursue ooptions 1-3 via prototyping and testing. Option 4 was discarded due to mechanical considerations and limitations in design resources. | ||
| + | |||
| + | ==Prototypes== | ||
| + | |||
| + | ==Decision== | ||
---- | ---- | ||
[[Category:Robot]][[Category:DEWBOT VIII]][[Category:Drive-train]][[Category:Pivot Drive]] | [[Category:Robot]][[Category:DEWBOT VIII]][[Category:Drive-train]][[Category:Pivot Drive]] | ||
Revision as of 18:17, 22 February 2012
What drive train to use for Rebound Rumble? The key drive-train requirements for the game were assessed to be:
- Ability to cross the mid-field line via either the Bridge or going over the Barrier (Need)
- The ability to drive in the wide orientation in order to fit three robots on a Bridge (Need)
- The ability to drive in the wide orientation to facilitate ball pick-up from the playing field (Need)
- Avoid blocking robots, especially between Key & Bridge (Desired)
- Ability to lock wheels on the Bridge to avoid rolling off when power is cut (Desired)
While not a specific strategic requirement, it was perceived that the ability to drive in the narrow orientation would make crossing over the Barrier safer & easier.
Furthermore, if pivot drive was used, it was decided that the shooter would be aimed my rotating the robot, rather than via a rotating turret (not applicable if tank drive was selected). The logic was that pivot drive enabled the entire robot to become a turret, so we should exploit this and avoid a redundant turret.
Team 1640's signature Pivot drive-train seemed to meet some of the game's requirements very well (especially driving in either wide or narrow orientations), but how would be get over the Barrier? 1640's pivots had always used 4" wheels in the past.
Contents
Reflection
Crossing the Barrier is a Need? Really? Yes, it is certainly do-able, but this capability is likely to be expensive in terms of mass, cost and compromises made to other (perhaps more critical) capabilities.
Concepts
Initial concepts included:
- A 6wd wide chassis (like DEWBOT V) with 8" Pneumatic wheels (or larger)
- 8" Pneumatic wheels (or larger) in-line with pivots, either outside or inside between, either undriven or driven
- A ramp and skid-plate in-line with pivots and between them
- Redisign pivot drive for 8" Pneumatic wheels (or larger)
It was decided to pursue ooptions 1-3 via prototyping and testing. Option 4 was discarded due to mechanical considerations and limitations in design resources.
