17 Februari 2010

Total Control (Speeding-Phase2)

Now, it's time to get serious. You should know exactly where your speed limit is. It's not important on what number your speed is. It will change step by step to higher level. But, how?

Speed is nothing if you can't control it. You should put the emphasis at "I'm the boss!" You must be able to control your ride like you flip your hand. That's why reflect moves is important. Concentrating to much on how to execute a move while you are speeding was just like a double sharp edge sword.

So, let's talk about our rides. I don't ask about what type of your rides and how fast it runs. I'm gonna ask this question.

1. What is the purpose of your motorcycle handlebar? ..... I bet the dominant answer is to turn the bike left or right. It's correct.
2. What is the purpose of your motorcycle throttle grip? ..... To rev up and down your engine. Correct again.
3. What is the purpose of your motorcycle brakes pedals? ..... To slow down your ride. Correct! amazing... you are very clever...
4. What is the purpose of your motorcycle gear shifter? ..... To change the gears. No doubt... you have pass the test...

Are those parts of the bike working alone? of course. if you see it as an individual mechanism. But the integrity of those parts could be an ultimate weapon for your bike. How could that be?

Gas throttle, brakes, gear shift, and bike handlebar is the only way to control your bike weight. You should already know that every bike has a center weight coordinate. This coordinate will change every time you change your speed. The higher the acceleration, this point will stretch back to the rear of the bike and vice versa. Then the point will set back to original when the speed is constant.

What is the relation between weight center and bike control? It's obvious that bike control is merely a weight control (weight transfer) of your bike. Without knowing this basic method of bike control, you'll go nowhere.

You should have noticed that you can still use the handlebar to turn your bike in low speed, but can you do it in much higher speed? You won't and it's dangerous. The handlebar can not turn to max point just to clear a corner in high speed, in facts you will create an angle between your bike and the road accordingly. when the right turn appear, you would lean the bike to the right and not the opposite. Why is that happen?

When your bike move forward, the weight is come along the straight path as your tire track. Then you make a turn on a corner. The weight is still to try moving straight, to eliminate this effect the weight should be neutralized by lowering its point to the ground, then bring it to create a centrifugal force along the corner. Remember that the weight will remain stabilize if you have a constant speed. so don't use the brake when you are already in the corner. it will make the weight stretch forward too fast an cause your front tire to overweight then loose its grip to the road. As the result, you'll end up kissing the asphalt. if you want to brake, do it before you enter the corner. that's why your judgment must be excellent to perform a very late braking.

There's another way to slow down before entering the corner, gear shift down will do just the same effect on creating a weight transfer. We call it engine braking. the result of this kind of braking is very amusing to the eyes of the spectators. While approaching a corner, shift down to lower gear and let the rear tire slides a little. (it's easy when you have a manual clutch). then lean your bike, the weight will change to front rapidly. control your handlebar so the weight stays on the track. and the amusing part is, you can go at full throttle while cornering with this kind of braking. clear the corner with your accelerator wide open will make the weight switch back and let the front tire free of the overweight so you can control it easily.

Let's talk about the tires. Front wheel always narrower than the rear one. Why is that? It's because you need it to create a lean angle when cornering very fast. try to lean your bike while its stop. see the tire tread, it touches the ground in a diametrical track. in fact, the leaner your angle, the smaller diameter of your tire that touch the ground. watch closely to the rear one. you should notice that the height of the front and rear tire is different now. (it's only happen if you use the recommended tire size). This difference of front-rear tire size makes you able to clear the corner in a very high speed.

To practice this phase, you should know the construction of your bike. where is the weight center gravity? how much stress you can give to the front tire? how long the reaction of the power after a sudden fully open throttle?

Now, let's hit the road....

Hary Joko Prasetiyo

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