Re: L2-"Negotiating" a curve.

[Leigh Palmer <palmer@SFU.CA>]

> I am quite aware of the differential but unless you have different tricycles
> than I've seen this doesn't apply.  I've never seen a commercial tricycle
> with a
> differential - they all have solid axles with one gear attached to a chain
> attached to another gear attached to pedals.  Even with a differential there
> would be some "slip" as the tires twisted on the vertical axis (unless you are
> going to consider the ideal situation where only one point of the tire is in
> contact with the road).

I lived in Cambridge, England for a while. Commercial tricycles with
differentials are not that uncommon. See Sharp's book (cited earlier
today). Articles 144. and 189. deal with tricycle differentials, but
not of the type I saw in Cambridge. I think you would find the rest
of the book very interesting, too. It is, in essence, a mechanics
textbook that uses bicycles (or related animals) for its examples.

Leigh