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- Path: sparky!uunet!vtserf!joesbar.cc.vt.edu!ranck
- From: ranck@joesbar.cc.vt.edu (Wm. L. Ranck)
- Newsgroups: rec.motorcycles
- Subject: Re: Slip-sliding away (was Re: What would you ride...)
- Message-ID: <9817@vtserf.cc.vt.edu>
- Date: 20 Nov 92 19:27:24 GMT
- References: <1992Nov18.194212.6271@colorado.edu>
- Sender: usenet@vtserf.cc.vt.edu
- Lines: 20
- X-Newsreader: TIN [version 1.1 PL6]
-
- Alex Matthews (alex@lyra.colorado.edu) wrote:
- : Future contributors to this thread should first complete the following
- : brain-teaser:
- :
- : "You are riding your bike in a straight line. Is your front wheel rotating
- : about its hub, or about its contact point with the road, or both, or
- : neither?"
-
- The wheel is definitely rotating about its hub. It is not rotating about its
- contact patch. Envision the wheel spinning at the same time it is travelling
- forward one inch off the road. OK, now that you have this mini-wheelie
- pictured let's assume that the tire touches down and contiues spinning at the
- same speed and so does forward travel. It should be obvious that there is
- not rotation around the contact patch. This is valid for straight line only.
- --
-
- *******************************************************************************
- * Bill Ranck ranck@joesbar.cc.vt.edu *
- * DoD #496 Bikes past and present: CB175, CB550F, Norton 750, CB350F, XV535 *
- *******************************************************************************
-