[CR]Re: pedal x f/wheel overlap

(Example: Events:BVVW)

In-Reply-To: <9544C4F568FAB045BA02DD1742602DEB041C5A9E@TFTMEXCH1.tufts.ad.tufts.edu>
References: <9544C4F568FAB045BA02DD1742602DEB041C5A9E@TFTMEXCH1.tufts.ad.tufts.edu>
Date: Tue, 10 Jan 2006 08:53:24 -0800
To: "Barbour, Christopher" <Christopher.Barbour@tufts.edu>, classicrendezvous@bikelist.org
From: "Jan Heine" <heine93@earthlink.net>
Subject: [CR]Re: pedal x f/wheel overlap

One example is my KOF 1990 Mercian, 57 x 57 cm, with 59 mm trail. Plenty of overlap with fenders. Do you have geometry measurements for more classic British front-end geometries? I'd be interested.

I guess I am putting the current Carradice-wearing lugged production bikes from Rivendell, Heron et al., in the British category despite the fact that their geometries may be quite different. These modern bikes all use geometries that result in very short front-centers - the result of the current fashion for a slack seat angle and trail numbers in the high 50s such as those found on my Mercian.

To give you a datapoint, the French geometries are somewhat similar to the Italian racing geometries from the 1940s that Chuck quoted. Typical is 73 degree head angle with 50 - 60 mm fork offset for 700C tires. No toeclip overlap on those for my feet!

Jan Heine, Seattle

>Jan Heine writes:
>The typical British high-trail geometries (with much less fork rake)
>often did have toeclip overlap, especially
>when set up with fenders.
>Jan, I have ridden many British bikes, dating from the 1890s to the
>1970s, and my friends own quite a few such machines in sizes from 19"
>c-t upward. None of these bikes have toe clip overlap with fenders. I
>cannot recall ever seeing a British bike from the classic era, apart
>from some track bikes (and not even all of those) that did not have a
>fairly large fork rake. I am curious to know what British bikes, and
>from what eras, you have found to have high-trail geometry.



>Christopher Barbour


>Boston, Mass.