Donald Gillies wrote:
>
(cut)
> what's the other local minima ?? I don't know, but a badly faced head
> tube or misaligned steering column, or a tire with the wrong profile
> (or possibly unevenly manufactured tread). Any other guesses?
This is just my opinion of course, but this really isn't the forum for an endless thread on "shimmy". This has discussed ad nauseum on the newsgroup "rec.bicycles.tech" and Google http://www.google.com now has a search feature to search newsgroups.
The result:
http://groups.google.com/
Or there is the CR archives <http://search.bikelist.org>:
http://search.bikelist.org/
Of course this was all summarized in the FAQ.
Good reading...
Chuck Schmidt South Pasadena, Southern California
.