MOD 1 pinion question

[BrianG]

The problem you are having is the high diff ratio of 4.09:1 and the largish spur of 48T. To get a lower rollout ratio with those values for the speed you're looking for, you're gonna need a large pinion. And since you are looking for a real 60mph speed, you should probably be shooting for a calculated speed between 65 and 70 mph, because wind resistance will drag you down a bit.

FYI, when you enter tire size, use the entire tire diameter, not just the rim.

What vehicle is this in?

[its me]

sorry guys left out some key info, its the emaxx im building. Actual weight is still undertermind.
Thanks pat- I am guessing I entered the wrong diff ratio in the calculator
thanks link- 4s it is. :)
Brian- would it be a better idea to run the kyosho plastic 46T? I was thinking the twins would tear it up?? Tire size I just entered 5.5 with a ballooning of .5, tires are badlands and I know they balloon more then .5 but I figured I be conservative?

Thanks again guys ill mess with the calculator more when I get off work.