Quote:
Originally Posted by Alan Anderson
Here's a goofy out-of-the-box suggestion: use the small wheels to drive larger pneumatic tires mounted directly below them. That'll give you ground clearance without changing the gear reduction. The larger tires will also work better on non-flat surfaces, in case you want to use the t-shirt robot outside (perhaps during a football game).
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I think that would still cause a reduction like gears, due to the radius difference.
To OP:
Just use a two-stage gearbox. It's not that much more expensive to buy a two-stage gearbox than to buy a one-stage.
Alternatively, you can make your own gearboxes. It isn't frightfully hard to do given a mill/ xy drill press or CNC or sponsor for cheap. Designing gearboxes is fun too. You just mix and match vex gears to suit your needs.