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NSRR vs Castor



On Thu, 4 Feb 1999, Huw Powell wrote:

> > Bicycles, too, have it--assuming I understand the NSRR concept in
> > automobile steering. With bikes it's determined by the rake angle of the
> > front fork plus the "offset" of the hub ("offset" there being determined by
> > the curved length at the end of the fork rather than any side-to-side
> > offset as in the automobile's wheel). The rake and offset combine to place
> > the bike tire's contact patch ahead (or behind) the point at which the
> > steering axis meets the ground); and the variations make for more (or less)
> > straight-ahead stability.
> 
> Isn't that caster?  Forgive me if I'm wrong... I thought the NSRR as

Correct.

> described meant the axis of steering rotation was "outside", as in
> further from the longitudinal center of the vehicle from, the
> longitudinal axis of the tire.  

Exactly.

Later,
Graydon D. Stuckey
No Audis!  :-(
Yet!  :-)