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I relize this thread is getting off topic, but I just have to ask.
Why not just use 2 identical motors on a differential type gearbox? As in, use the two drill motors on the left side, and the two Atwood motors on the right and then just gear them to give you the same speed. With two motors of the same stall torque you avoid the main detraction of a diff gear box, which is the lower torque motor being over powered when stalled.
I'm still not completely clear on what happens next, when the motors actually start to show their torque differences. Would the side powered by the more powerful motor 'overpower' the other side in a pushing match, and pull the 'bot to one side? Am I correct to think that the drills would be geared higher, and the Atwood's geared lower? Or does the Diff mix this all up??>
Like I said, I don't really understand how it all works out- I've yet to receive any formal mechanical education. I know that 121 has used two drills on one side and two Atwoods on the other (this past year I believe?). From what I remember, they used a fairly traditional transmission, except the two were not identical. My team has never used multi motor gearboxes, so I'm a little in the fog here.
Am I just missing something painfully obvious here? I get the feeling I am. Again, sorry for pulling this thread further off topic, but my curiosity is killing me.
-Andy A.
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