Re: O/T help with speech assignment
In mud, you just want to keep the tread clean. Usually a constant speed is best, not feathering the stupid pedal.
Snow, you want instataneous bonds to happen. So therefore you don't want any wheelspin and you want to find the speed at which you can have the strongest bond. What you're doing is melting the snow, compressing it, letting it harden, and then fall back out of the tire. This happens real quick like. And you don't want to be braking and turning at the same time.
Ice, just be fluid. It's best to grab a taller gear that way you're less likely to have a tire start spinning. You also want to avoid direction changes while on ice. If you can, keep one pair of tires on the snow at a time.
Sand is an interesting character. You either want to "float" on it or displace a lot of it. Floating is best done with a wide footprint and a cup under the tire. In other words, deflate your tire until on asphalt it would be ruined. Even a wide tire, 13.50 or 14.50 will bury itself if overinflated due to the fact that it will push the sand out to the sides instead of trapping it underneath. A 10.50 tire will float a lot better at 12lbs than a 12.50 tire at 30lbs. Displacing sand is just that. You move as much as possible. Basically you're using the sand to thrust you forward and on top of the sand ahead of you. It's the main reason a sandrail with 80% of its weight on its back tires can dump the clutch with a pair of Taller Haulers (a model of huge paddles) at 3psi and not even drop 2" but a sandrail on Mickey Thompson Bajas would bury itself. There's nothing more embarassing than digging out your sandrail after doing such a thing. Trust me, I should know.