Remodeling of robot

Next, remodel as shown in the photograph just the tip of the motor car.

The jagged part of gear is called "teeth". Giza is a single tooth. Number of teeth attached to the gear is "number of teeth."
Here we are using two 16 teeth gear. If you add this to the NXT tire and complete.

OK, now you can RUN. Run at exactly the same speed and power when the power of [75] earlier.
Point: Using the same number of teeth gear convey rotation, it will be exactly the same speed and power. I only change the direction of rotation. (I was converted from [↑] to [↓] of the program) Next, remove the big tire, removes the 16 teeth gear of the two, put a 24 teeth gear and 8 teeth gear in this way.

Replace the tire, RUN. I know it was fairly slow speed.
Well, try to stop the car by hand. Try to feel it really powerful.
(The gear may be idling because of too much power)
Point: When you turn a big gear with the small gear, instead of speed go down, power up
More specifically, speed and power will be changed according to the ratio of the number of teeth of two gears.
In this case, because 8 tooth gear and 24 tooth gear, 8:24 = 1:3.
In other words, the speed become 1/3, the power will be three times.
Then, remove the large tire, you try to change the order of the two gears.

Put tires, RUN. It ran faster than ever.
Try to stop the car by hand in the same way. You do not feel too much power.
Point: When you turn a small gear with a large gear, instead of speed up power goes down.
If this combination, the speed goes up to three times, power has become 1/3.
Well, you should be learned the principle of the gear.
I introduced "point" that are not only to build a car, and applied to make the various mechanisms.

See you in next month!!