Instead of the basic fastest drivetrain, how about the slowest drivetrain? Since my season is over and I have a bunch of parts with me. I have red motors with me and I’m planning to make the slowest drivetrain in Vex. It’ll be a cool little project for me. If anyone wants to give some tips, that would be appreciated.
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i mean the easiest way is just to not make it move sloest possible speed is 0. But im guessing you want it to move so you should look at this.
you would just drive it from mthe small gear not hte big gear.
heres a google : 1 ratio.
also worm gears can get you a super torquey (slow) gear ratio super compact. its like 24:1 iirc. heres a really old forum post about it
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Look up team 97817K Gilgamesh Last year, I think they had a 30 RPM drive wall bot (close to one, at least). Basically, they would box our most of the goal and have their parner score. This strategy almost let them win against 100A and 323V in a match (if you don’t know who thoes teams are, go look them up as well)
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The slowest drive train is hard to determine with such an open end but let’s break it down
RPM:
Starting at the motor we could have a 100 rpm cartrige
Then it gets iffy, im going to give a few ratios and the logic behind them
The most “reasonable”
The smallest wheel “standard” is 2.75
The biggest gear we can fit on that is a 60
We can connect a 12t to if we do things correctly
assuming we avoid compound ratios we are at 17 rpm on 2.75 (super slow)
The stretching it ratios
2 inch wheels are sold by vex
Assuming u run a 1:1 vertically to get gears to fit we can then add a 84t, compounding 2 of these 12:84 ratios we get 2 rpm on 2 inch wheels
The crawler
VEX sells 60a 1.625 inch wheels which while not ideal could “work” (technically they would compress to be even smaller but I don’t want to that math)
Assuming another vertical 1:1 that allows us to for gears we could keep stacking 1:1 ratios, assuming we have max size and snake them around and are just a chassis and only power the forward wheels we could for about 5 7:1 ratios (i believe, someone check me on that)
Assuming this all works out we are at a .006 rpm on 1.625 inch wheels
that would be .0005 inches per second or .06 inches per match, at this point you are probably considered immobile by most teams
Weight
If you make the robot extremely heavy it will drop it’s acceleration significantly
Motors
The less motors means less acceleration the extreme ratio could be run by 2 5.5w motors with the amount of torque there
There is a overcomplicated explanation, although technically a broken drive is slower as the RPM is 0
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