nklr the 4th

[Jeffrey L. Walker]

> Luke, > > A chain that is too loose causes unnecessary jerkiness on the > powetrain (chain, sprockets, clutch, transmission bearings, > shafts & gears). These additonal loads lead to increased > wear & shortened life of all these components. Proper chain > maintenance (adjustment & lubrication) does wonders for > extending chain & sprocket life. >

I actually learned the mathematical definition of "Jerkiness" in my Machine Dynamics class last week. If you take the derivative of a position as a function of time, you get velocity. If you then take the derivative of velocity, you get acceleration, yeah? Well, if you then take another derivative of acceleration, you get "Jerk". So a jerk is the third derivative of position function. Its so simple. Its one of those things I always instinctively knew, but never thought of mathematically before. Of course we were using it in analyzing cam profiles. Interesting to me anyway. Jeff

[Dennis Angus]

Jeff I thought jerkiness is the behavior of a jerk, often exhibited as bad driving habits. This behavior can be modified somewhat by several different methods. Loud horns Bright lights Large weapons And my personal favorite, the loud, unpacked supertrap, at ear level, with the engine rapped to 6k or higher, as you pass by the offending jerks open window. For this to be totally effective you must see how close you can come to taking his/her mirror off with you're handle bar. Great for all the smaller cars on the road today. The effectiveness of this technique can be calculated by factoring the square root of your velocity times the volume of the sound wave multiplied by the cagers eye size in your mirror after the pass. I never thought of this as a math equation before. The scientific approach is swell. DAngus -----Original Message----- From: Jeffrey L. Walker [mailto:jlwalk@...] Sent: Saturday, July 08, 2000 9:12 AM To: DSN_klr650@egroups.com; Jim Hyman Subject: Re: [DSN_klr650] Re: What if my chain too loose? NKLR

> Luke, > > A chain that is too loose causes unnecessary jerkiness on the > powetrain (chain, sprockets, clutch, transmission bearings, > shafts & gears). These additonal loads lead to increased > wear & shortened life of all these components. Proper chain > maintenance (adjustment & lubrication) does wonders for > extending chain & sprocket life. >

I actually learned the mathematical definition of "Jerkiness" in my Machine Dynamics class last week. If you take the derivative of a position as a function of time, you get velocity. If you then take the derivative of velocity, you get acceleration, yeah? Well, if you then take another derivative of acceleration, you get "Jerk". So a jerk is the third derivative of position function. Its so simple. Its one of those things I always instinctively knew, but never thought of mathematically before. Of course we were using it in analyzing cam profiles. Interesting to me anyway. Jeff ------------------------------------------------------------------------ Failed tests, classes skipped, forgotten locker combinations. Remember the good 'ol days http://click.egroups.com/1/5531/6/_/911801/_/963068655/ ------------------------------------------------------------------------ Visit the KLR650 archives at http://www.listquest.com/lq/search.html?ln=klr650 Support Dual Sport News... dsneditor@... Let's keep this list SPAM free! Visit our site at http://www.egroups.com/group/DSN_klr650 To unsubscribe from this group, send an email to: DSN_klr650-unsubscribe@egroups.com

[spye@hvgb.net]

I 've been enjoying this British/American/Canadian thread. Thought you folks might get a kick out of this one. This is the transcript of an ACTUAL radio conversation of a U.S. Naval ship with Canadian Authorities off the coast of Newfoundland in October 1995. Americans: Please divert your course 15 degrees to the North to avoid a collision. Canadians: Recommend you divert YOUR course 15 degrees to the South to avoid a collision. Americans: This is the Captian of a U.S. Navy ship. I say again, divert YOUR course. Canadians: No. I say again,you divert YOUR course. Americans: THIS IS THE AIRCRAFT CARRIER USS LINCOLN, THE SECOND LARGEST SHIP IN THE UNITED STATES' ATLANTIC FLEET. WE ARE ACCOMPANIED BY THREE DESTROYERS, THREE CRUISERS AND NUMEROUS SUPPORT VESSELS. I DEMAND THAT YOU DIVERT YOUR COURSE 15 DEGREES NORTH, THAT'S ONE FIVE DEGREES NORTH, OR COUNTER-MEASURES WILL BE UNDERTAKEN TO ENSURE THE SAFETY OF THIS SHIP! Canadians: We are a lighthouse. Your call. Steve Pye A7