Quote:
Originally Posted by Alpha 997
Instead of lining up the motors perpendicular to the transmission, why not put worm gears on them and line them up parallel to the transmission? This way, it’ll give you more usable space and the tracks would be self-locking. No more rolling down the ramps after the power is cut. A robot with self-locking tracks from Outback would not be moved by anything at anytime unless it wants to.  |
I personally have no experience with worm gears, and so venturing there on a system this expensive would not be a good use of budget for me.
Quote:
Originally Posted by Alpha 997
Those two support beams running through the center, are those 3/4" L's? or are they squares?
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Those are 1x1 box extrusion pieces.
Quote:
Originally Posted by Travis Covington
Why 7075 plates? And why only 1/8"?
Also, you may want to run some lewis bending numbers on those 24dp gears... you may have already, but at first glance it looks iffy. Depends entirely on the material, though.
Otherwise looks good!
Edit: Also, you said you used 20 DP on the initial reduction off the CIMs, and jump down to 24 on the other stages? That is counter intuitive to me, as you are gearing it down each stage you move away from the motor, putting more torque through the teeth of those gears.
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I personally have no clue how to run numbers like that. I'm a junior in high school, and if I learned to do that, I'd be seriously happy (so if you wanna teach me, then yay!). But I'm going from experience here. In the past, when we take apart an old tranny, the pinion set is always the one with the most wear and tear on it, and so I've kept that one nice and buffed up.
Quote:
Originally Posted by Guy Chriqui
Why dont you integrate the tracks into the total length of the frame? Make them removeable but you could extend them the entire length & have them detach as a single unit for easy working while the rest of the team works on whatever mechanism is on top of the bot. In the drawing the plates just get welded onto the 2x1 (guessing) at the ends but I think you might run into issues with that.
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They actually are removeable, by two bolts per end of the tread, similar to what 997 did this year. However, I'm too lazy to put those bolts in at this CAD stage.