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New The driveshaft on the K100 is more than twice as long
If you've ever seen a 60s-era American musclecar revving at a red light, you probably saw the front end twist from the torque. A long driveshaft and heavy flywheel[1] mounted longways in a bike could have a similar effect, and I do remember people noting it when the K bikes came out.


[1] One guy said that BMW had apparently welded a sewer lid onto the end of the driveshaft.



[edit] Bah. I knew after walking away from the computer for several hours with a reply open that I should have checked for updates in the thread before posting. Christian got the physica exactly right.
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Kip Hawley is still an idiot.

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Purveyor of Doc Hope's [link|http://DocHope.com|fresh-baked dog biscuits and pet treats].
[link|http://DocHope.com|http://DocHope.com]
Expand Edited by drewk May 28, 2007, 12:42:04 PM EDT
New What would the LENGTH of the shaft have to do with anything?
More rotating driveshaft weight, you mean, or what?


   [link|mailto:MyUserId@MyISP.CountryCode|Christian R. Conrad]
(I live in Finland, and my e-mail in-box is at the Saunalahti company.)
Ah, the Germans: Masters of Convoluted Simplification. — [link|http://www.thetruthaboutcars.com/?p=1603|Jehovah]
New Now exactly where is this conversation headed?
Too much of today's music is fashionable crap dressed as artistry.Adrian Belew
New Yes, I'd guess more than twice the mass
===

Kip Hawley is still an idiot.

===

Purveyor of Doc Hope's [link|http://DocHope.com|fresh-baked dog biscuits and pet treats].
[link|http://DocHope.com|http://DocHope.com]
New Not particularly.
When a driveshaft gets to a "certain length" or is required to handle a certain power level, they get lighter and more expensive, until you get past another point in length and power handling.

It is all about reducing shaft flex, whipping, harmonics and twist.

IOW, short low-power shafts do not have to worry about flex, whipping, harmonics or twist.

The more requirements... the more "high-tech" they become.
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     Hayabusa motored VW Golf... wow. - (folkert) - (21)
         Pretty darned zippy! -NT - (bepatient)
         reminds me of legend racing - (boxley)
         Dodge Tomahawk: Viper V-10 engined Motorcycle. 368 kB. - (Another Scott) - (18)
             How would it have torque steer? - (pwhysall) - (17)
                 Monster-motored personal vehicles are silly. - (Another Scott) - (16)
                     Nope - (drewk) - (15)
                         "Torque lean", "Counter-torque lean", something like that? -NT - (CRConrad) - (3)
                             On a bike, if you're leaning you're steering -NT - (drewk) - (2)
                                 Not if you counter by actually *steering* the other way. -NT - (CRConrad) - (1)
                                     Ever ridden a bike? - (drewk)
                         That's every BMW ever, then. - (pwhysall) - (10)
                             Moto Guzzi, Gold Wing, (old) Indian, that big new Triumph... -NT - (CRConrad) - (4)
                                 How does that work, then? - (pwhysall) - (3)
                                     No; just that like BMWs, they have longitudinal crankshafts - (CRConrad) - (2)
                                         gotcha, thanks - (pwhysall) - (1)
                                             Yeah, of course; they should never have started using it. -NT - (CRConrad)
                             The driveshaft on the K100 is more than twice as long - (drewk) - (4)
                                 What would the LENGTH of the shaft have to do with anything? - (CRConrad) - (3)
                                     Now exactly where is this conversation headed? -NT - (bepatient)
                                     Yes, I'd guess more than twice the mass -NT - (drewk) - (1)
                                         Not particularly. - (folkert)

Don't be too quick to award him the prize. It's only Thursday.
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