On Dec 15, 8:36*pm, (Neil Williams)
wrote:
On Tue, 15 Dec 2009 05:34:52 -0800 (PST), MIG

wrote:
Not quite 20 years. *The 321s must have been introduced later than
that, and still flush on to the tracks.

Really quite surprised by that, given that they're just a later build
of 319s with a different front end.

The most recent stock with dump-on-the-track bogs is, I'd think, the
early-1990s Class 158.

Yes, actually I did/should know that, as I knew that SWT converted its
fleet by adding retention tanks.

--
John Band
john at johnband dot org
www.johnband.org