Quote:
Originally Posted by KohKohPuffs
Why are the speeds high? I understand that maybe for an open field, you want to travel at 20 fps (although I use 16 fps for my gearboxes), but I'm not sure about 8 fps as a low speed. One person pointed out on one of my gearboxes going at that similar low speed that the goal of the low speed is not to go fast, but to win a pushing match.
So is there a way to bring that low speed down to... something like 6 fps? This would mean more torque and less current draw, therefore a longer time that the bot with this gearbox can be in a pushing match.
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A somewhat lower low speed would allow for less current draw but would not increase the pushing force because of traction limitations (at least... according to wcp's calculator).
I currently get about 56 Amps of draw using 2 cims and a mini cim. This is not unreasonable as the 40amp breakers can last about 50 seconds with 60 amps of draw. That said, using 2 cims and a mini cim or 3 cims with the lower brown out voltage of the roboRIO will probably require my team to dedicate some special efforts to reducing current draw.
One idea we've had to limit current draw is only running 1 cim in low gear until the driver chooses to use a pushing mode, in which both cims and a mini cim would be engaged.
EDIT: I do not know how to render cad. I use solidworks.