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Old 01-06-2006, 06:10 PM   #1 (permalink)
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Default How motorcycles work

For the uninformed, like myself...
http://auto.howstuffworks.com/motorcycle2.htm

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Old 01-06-2006, 07:23 PM   #2 (permalink)
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I thought I just had to sit on it and twist the throttle! You ruined it for me...
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Old 01-06-2006, 07:34 PM   #3 (permalink)
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"The size of the combustion chamber in a motorcycle engine is directly related to its power output. The upper limit is about 1500 cubic centimeters (cc), while the lower limit is about 50 cc."

They need to raise that upper limit figure by about 35-40%.
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Old 01-06-2006, 07:36 PM   #4 (permalink)
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Quote:
Originally Posted by BillyBumbler
"The size of the combustion chamber in a motorcycle engine is directly related to its power output. The upper limit is about 1500 cubic centimeters (cc), while the lower limit is about 50 cc."

They need to raise that upper limit figure by about 35-40%.

Yeah, I was thinking the same thing. But the article provides the basics very nicely.
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Old 01-07-2006, 08:47 AM   #5 (permalink)
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Strange, they list gyroscopic precession as the primary reason for the countersteering phenomenon. I've always believed that introduction of instability (and the resultant lean) was the initial action. I guess it's both.
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Old 01-07-2006, 08:36 PM   #6 (permalink)
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"However, shaft drives are heavier and sometimes cause unwanted motion, called shaft jacking, in the rear of the motorcycle"


Ughh....new one on me.....going to have to ask for explanation.

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Old 01-07-2006, 10:46 PM   #7 (permalink)
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Because the shaft applies torque at a right angle to the wheel, some twisting occurs, lifting the rear and preventing the wheelie tendency.
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Old 01-08-2006, 07:01 AM   #8 (permalink)
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Quote:
Originally Posted by RowdyRed94
Because the shaft applies torque at a right angle to the wheel, some twisting occurs, lifting the rear and preventing the wheelie tendency.

You can sometimes see it happen if you stand to the side and watch someone acelerate from a dead standstill.
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Old 01-08-2006, 10:37 AM   #9 (permalink)
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good article -- but it could add a bit on how the up and down motion of the pistons is changed to rotary motion and then coverted to the different types of drive to the rear wheel
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Old 01-08-2006, 10:58 AM   #10 (permalink)
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You didn't read the whole article, did you? The first picture clearly shows the motion conversion. The next page discussed drive systems and the clutch.
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Old 01-09-2006, 10:54 AM   #11 (permalink)
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Pretty Cool.
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Old 01-28-2006, 06:30 AM   #12 (permalink)
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1 mistatement, 1 omission.

Chains don't stretch, they wear, along with the sprockets, which is why you're always adjusting the thing.

Jack shaft in a drive shaft model is the result of the driveshaft "climbing the pinion" when you first apply power to the rear wheel. Most manufacturers have engineed this out of their bikes and you most likely won't notice it anymore.

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