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Re: BIG Tires
Interfacing aside, you need a larger gearbox; the reduction needed for significant force is higher. (Holding torque constant, force decreases with wheel size)
By going to a larger wheel, you:
1. Probably lift your CG up (gearboxes are higher up as well as framing), decreasing stability
2. Shorten the contact patch of the bot (your area of contact is now 14.5" less than the length of your bot instead of only 8"), decreasing stability. Now your contact area is around only 15" (assuming squarebot). I made an offseason bot with this C-C distance once with 10.75 reduction from a single CIM onto 6" wheels, and had enormous issues with being spurred into a wheelie.
3. Force yourself to get rid of a center wheel, so you can't run a drop and decrease turning scrub in this fashion.
All of this would deter me from running these wheels
Last edited by ThaddeusMaximus : 14-01-2016 at 13:45.
Reason: added wheelie effect notes
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