That's a sweet calculator.
Originally Posted by AriMB
what you put in the calculator as the expected load
And that right there is the roadblock that I'm getting around by asking students to "make it work" at prototype phase with limited power & control dexterity
One we have a functional prototype, we can measure stuff off it, and refine it with a calculator. But I've found that asking for too much math up front can intimidate my students into inaction
I'd rather meet them where they are than act as a mathematical gatekeeper.
We're thoroughly off topic now.
Using spring loads to keep backlash in check is my favorite "FRC-ready" method for manipulators (<360 degree motion / single direction). Surgical tubing is magic, just wrap some on there & trust. Your students will need to experimentally determine what the "right amount of magic" is, you'll probably never put a firm number on it for design, and for four hours (1 season) machine operation? I'm OK with that.
Originally Posted by Rob Stehlik
I put a hex shaft collar next to the gear, drilled though both of them and inserted a roll pin.
Love this. Could probably do it on a drill press?
I'd want to do it with a miniature VEX collar, but not sure how big a roll pin could fit through the "meat" of that shaft collar. What kind of loads were you putting on this?