docc Posted December 21, 2008 Posted December 21, 2008 F=MA Force (which does the damage) = mass (which remains constant) multiplied by acceleration (the change in velocity). So. it is not the velocity of itself which multiplies the force, but the rate of change. Sharp downshifts, especially without matching throttle speed, or even abrupt chopped throttle increase force in higher magnitudes because the change of acceleration (deceleration is a negative change in velocity) in the driveline is greater than that change when engine torque is applied to propel the motorcycle forward. Remember, we're not talking changes in the speed of the motorcycle itself, but change in the rotational velocity of the driveline. The difference in force is analogous to pulling a nail from a board (even briskly) and striking with a hammer to drive it in. The greater force occurs when the hammer head changes velocity so abruptly upon impact. Physics is a wonderful, yet arguable, body of thinking. Yet, certain facts remain inarguable: 1)the Guzzi is parked today, 2) it's the first day of winter in the Northern Hemisphere.
Greg Field Posted December 21, 2008 Author Posted December 21, 2008 We've had snow on the ground for a week. That is a once-in-20-years phenomenon here. It's still snowing and likely will be for a few more days. Both burnouts and locking the rear wheel by compression braking are both equally easy today. You won't even have to lock the front break to do a burnout. You do on dry pavement. No weight transfer there . . .
Guest ratchethack Posted December 22, 2008 Posted December 22, 2008 We've had snow on the ground for a week. That is a once-in-20-years phenomenon here. It's still snowing and likely will be for a few more days. Both burnouts and locking the rear wheel by compression braking are both equally easy today. You won't even have to lock the front break to do a burnout. You do on dry pavement. No weight transfer there . . . Well, burnouts would at least provide some warmth! Not many Guzzi's motoring across much o' the entire fruited plain lately, as snow and ice storms break records, and a bewildering number of low temp records continue to be likewise shattered -- since October. Wot's more, as unusual as this is in recent years, (three consecutive years now, but who's counting?) it appears that we might as well face reality and get used to it. . . Skateboarder Near Malibu in Southern California last week Global cooling? Look at these chilling statistics Published Sunday, December 21, 2008 in The Washington Times by DEROY MURDOCK source link: http://www.washingtontimes.com/news/2008/d...global-cooling/ Winter officially arrives today with the solstice. But for many Americans, autumn 2008's final days already felt like deepest, coldest January. Some New Englanders still lack electricity after a Dec. 11 ice storm snapped power lines. Up to eight inches of snow struck New Orleans and southern Louisiana that day and didn't melt for 48 hours in some neighborhoods. In southern California Dec. 17, a half-inch of snow brightened Malibu's hills while a half-foot barricaded highways and marooned commuters in desert towns east of Los Angeles. Three inches of the white stuff shuttered Las Vegas' McCarren Airport that day and dusted the Strip's hotels and casinos. What are the odds of that? Actually, the odds are rising that snow, ice and cold will grow increasingly common. As serious scientists repeatedly explain, global cooling is here. It is chilling temperatures and so-called "global-warming." According to the National Climatic Data Center, 2008 will be America's coldest year since 1997, thanks to La Nina and precipitation in the central and eastern states. Solar quietude also may underlie global cooling. This year's sunspots and solar radiation approach the minimum in the sun's cycle, corresponding with lower Earth temperatures. This echoes Harvard-Smithsonian astrophysicist Dr. Sallie Baliunas' belief that solar variability, much more than CO2, sways global temperatures. Meanwhile, the National Weather Service reports that last summer was Anchorage's third coldest on record. "Not since 1980 has there been a summer less reflective of global warming," Craig Medred wrote in the Anchorage Daily News. Consequently, Alaska's glaciers are thickening in the middle. "It's been a long time on most glaciers where they've actually had positive mass balance," U.S. Geological Survey glaciologist Bruce Molnia told Mr. Medred Oct. 13. Similarly, the National Snow and Ice Data Center found that Arctic sea ice expanded 13.2 percent this year, or a Texas-sized 270,000 square miles. Across the equator, Brazil endured an especially cold September. Snow graced its southern provinces that month. "Global Warming is over, and Global Warming Theory has failed. There is no evidence that CO2 drives world temperatures or any consequent climate change," Imperial College London astrophysicist and long-range forecaster Piers Corbyn wrote British members of Parliament on Oct. 28. "According to official data in every year since 1998, world temperatures have been colder than that year, yet CO2 has been rising rapidly." That evening, as the House of Commons debated legislation on so-called "global warming," October snow fell in London for the first time since 1922. These observations parallel those of five German researchers led by Professor Noel Keenlyside of the Leibniz Institute of Marine Sciences. "Our results suggest that global surface temperature may not increase over the next decade," they concluded in last May's Nature, "as natural climate variations in the North Atlantic and tropical Pacific temporarily offset the projected anthropogenic (man-made) warming." This "lull" should doom the 0.54 degree Fahrenheit average global temperature rise predicted by the U.N.'s Intergovernmental Panel on Climate Change, the Vatican of so-called "global warming." Incidentally, the IPCC's computer models factor in neither El Nino nor the Gulf Stream. Excluding such major climate variables would be like ESPN ignoring baseball and basketball. So, is this all just propaganda concocted by Chevron-funded, right-wing, flat-Earthers? Ask Dr. Martin Hertzberg, a physical chemist and retired Navy meteorologist. "As a scientist and life-long liberal Democrat, I find the constant regurgitation of the anecdotal, fear-mongering clap-trap about human-caused global warming to be a disservice to science," Mr. Hertzberg wrote in Sept. 26's USA Today. "From the El Nino year of 1998 until Jan., 2007, the average temperature of the Earth's atmosphere near its surface decreased some 0.25 C (0.45 F). From Jan., 2007 until the spring of 2008, it dropped a whopping 0.75 C (1.35 F)." As global cooling becomes more widely recognized, Americans from Maine to Malibu should feel comfortable dreaming of a white Christmas. Deroy Murdock is a columnist with Scripps Howard News Service and a media fellow with the Hoover Institution on War, Revolution and Peace at Stanford University. Biography: http://www.theihs.org/PeopleDetails.aspx?id=876 ____________ May y'all enjoy your white Christmas, Gents! -- And do keep warm, won't you?
GuzziMoto Posted December 22, 2008 Posted December 22, 2008 Ahhh... Good to have ya back, Ratchet (I think). I missed The Ministry of Information (MisInfo for short).
Guest ratchethack Posted December 24, 2008 Posted December 24, 2008 Ahhh... Good to have ya back, Ratchet (I think).I missed The Ministry of Information (MisInfo for short). Say GMoto, I sure hope you're warm enough, my friend (globally warm or otherwise) . The end o' Guzzi season seems to've come even earlier than the early end last year. Why, with Massachusetts digging out from under the the worst ice and snow storms in the lifetimes of its Citizens -- let alone before the start of winter! -- the state of emergency declared by the governor, and 1.2 million in New Hampshire without power last week, thousands taking refuge in emergency shelters, etc., I reckon you're having something pretty close to the same? Interestingly enough, one of your "neighbors" in Falls Church, VA (some 50 miles from you I think?) had an interesting question by way of a letter to the editor of The Washington Times (the WT also being one o' your neighbors, right there in the equally unseasonably deep-frozen-before-winter DC) in response to the article I posted above: LETTERS TO THE EDITOR, The Washington Times, Monday, December 22, 2008 I couldn't help noticing the irony of the confluence of the story "Obama science-tech team takes aim at global warming" (Nation, Sunday) and Deroy Murdock's "Global cooling?" (Commentary, Sunday). In the former, Barack Obama says "Promoting science [is] ... about listening to what our scientists have to say even when it's inconvenient - especially inconvenient." In the latter, astrophysicist and long-range forecaster Piers Corbyn is quoted as saying that "Global Warming is over, and Global Warming Theory has failed. There is no evidence that CO2 drives world temperatures or any consequent climate change. ... every year since 1998, world temperatures have been colder than that year, yet CO2 has been rising rapidly." In view of Mr. Obama's rhetoric about global warming, one wonders if Mr. Corbyn's "inconvenient truth" is something to which Mr. Obama would be willing to listen, particularly in a time when man-made stress on the economy is the last thing needed. ROBERT WILCOX Falls Church, VA Looks like your neighbor, ol' Bob Wilcox is suffering under the same inconvenient "misinformation" as both The Washington Times and Yours Truly, eh?
dlaing Posted December 24, 2008 Posted December 24, 2008 You appear to have forgotten a major premises of global warming theory, that it creates not just an overall planetary warming, but irregular weather, including heat waves as well as deeper freezes, longer droughts as well as greater floods, glaciers melting as well as record blizzards, etc.
dlaing Posted December 24, 2008 Posted December 24, 2008 "This echoes Harvard-Smithsonian astrophysicist Dr. Sallie Baliunas' belief that solar variability, much more than CO2, sways global temperatures." What did I read that right!?! One of your junk scientists admits that CO2 sways global temperatures!?! (albeit less than solar variability) FWIW Automobile sales are down, high oil barrel prices drove gasoline consumption figures significantly downward for the probably the first time since the 1974 gas rationing and my furnace went on two months later than last year. Maybe these Winter storms are evidence that Kyoto is working!!!!!!!!! No, it would be ridiculous to make such an assumption based on limited evidence and the Winter storms are not evidence that global warming does not exist. Even Ratchet admitted that global warming existed, but after a big Winter storm his posts suggest global warming is over. The people on this forum are too smart to fall for it, cold as our toes may be.
Greg Field Posted December 24, 2008 Author Posted December 24, 2008 I just wish the high priests and acolytes of the religion centered around the Hallowed and Immaculate GWM (Global Warming Model) would pick one term and stick with it. Is it global warming or climate change? Then, show me when the climate has NOT changed. I remember two summers back standing by a sign outside Hyder, Alaska, on a little road up to the glacier, as my CoppaLabio idled impatiently. The sign said that at that spot 9,000 years ago, the ice was 300 feet thick. On the day I was there, the glacier was about 20 miles and 3,000 vertical feet above that spot. I began to wonder how much of that melt-off had occured since the advent of automobiles. I'm guessing not much. WHat caused the rest? Could it be that there is another dominant force causing the change other than hunman activity? If so, if the other force is dominant, how will changing human activity change the outcome? It won't. So might we not be better off spending out time and money to mitigate the consequences of the change that will be caused by this other force, rather than wasting it on behavior changes that will be inconsequential? These were the thoughts that occured to me that day.
dlaing Posted December 24, 2008 Posted December 24, 2008 Global cooling? Look at these chilling statistics[/size] Published Sunday, December 21, 2008 in The Washington Times by DEROY MURDOCK source link: http://www.washingtontimes.com/news/2008/d...global-cooling/ snip According to the National Climatic Data Center, 2008 will be America's coldest year since 1997, thanks to La Nina and precipitation in the central and eastern states. snip Clear proof global warming is over??? Look at that curve, look very very closely and notice how it can appear, if you squint hard enough to have premonitions, that since 1997 we have turned back towards the ice age: (sarcasm intended)
dlaing Posted December 24, 2008 Posted December 24, 2008 Could it be that there is another dominant force causing the change other than hunman activity? If so, if the other force is dominant, how will changing human activity change the outcome? It won't. So might we not be better off spending out time and money to mitigate the consequences of the change that will be caused by this other force, rather than wasting it on behavior changes that will be inconsequential? These were the thoughts that occured to me that day. Assuming that there is another dominant force causing the change other than human activity, it is not logical to extrapolate changing human activity won't change the outcome. Almost all scientists believe we can change the outcome, but disagree how much we can change the outcome. What difference does an inch make when the water rises a foot? Putting effort towards mitigating the consequences of climate change is an excellent idea, but it does not mean we should not take efforts to reduce greenhouse gas emissions. Efforts to reduce greenhouse gases also reduce our dependence on the finite source of fossil fuels.
richard100t Posted December 24, 2008 Posted December 24, 2008 This is a very interesting conversation, but I'm not sure how it affects the cush drive in my Italian motorcycle!
gavo Posted December 24, 2008 Posted December 24, 2008 32 degrees C on xmas day I think I'll just sit in the pool with a beer and ponder my cush drive
dlaing Posted December 25, 2008 Posted December 25, 2008 32 degrees C on xmas day I think I'll just sit in the pool with a beer and ponder my cush drive I guess not all of us have cold toes. I just got back from ice skating for the first time in nearly 25 years, what a hoot! I told my wife I was as good as the kids out there skating backwards and doing hockey stops. What a crock! I fell three times, could not get moving over 5 mph, and could not figure out how to stop. I think I'll stick to motorsickling, unless that global cooling trend escalates to the point that I am ice skating to work down the Penasquitos Creek.
dlaing Posted December 25, 2008 Posted December 25, 2008 This is a very interesting conversation, but I'm not sure how it affects the cush drive in my Italian motorcycle! Sorry, getting back to the topic, which splines wear out? Rear wheel? Fly Wheel? Engine side? tranny side? Shaft drive? tranny out? bevel in?
dhansen Posted December 25, 2008 Posted December 25, 2008 You appear to have forgotten a major premises of global warming theory, that it creates not just an overall planetary warming, but irregular weather, including heat waves as well as deeper freezes, longer droughts as well as greater floods, glaciers melting as well as record blizzards, etc. Gosh Dave, that just about covers every possible variation we might see in our weather. No way the AGW believers can ever be wrong. Be sure you send Uncle AL a big check to feed his ministry and ease your concience. <_> Dennis
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