2002-09-03 Here is a killer from the same source which I provided a link for in USMA22038:
Bm235 to NS Reizigers Type Bm235 2nd class compartment coaches which can run at 200kph............... I'd take a million km/hr over one kph. And on top of it, it is all run together, another yuck! John ----- Original Message ----- From: "Bill Potts" <[EMAIL PROTECTED]> To: "U.S. Metric Association" <[EMAIL PROTECTED]> Sent: Tuesday, 2002-09-03 11:30 Subject: [USMA:22039] Re: Fwd: [A_A] "millimeter tolerance" > Louis does know better. He was quoting from the document and making the > point (too subtly for you, apparently) that it was incorrect. > > Bill Potts, CMS > Roseville, CA > http://metric1.org [SI Navigator] > > > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of > Wizard of OS > Sent: Tuesday, September 03, 2002 02:37 > To: U.S. Metric Association > Subject: [USMA:22029] Re: Fwd: [A_A] "millimeter tolerance" > > > hey Louis,, you're french, you should know best. Don't write km/hr! > ----- Original Message ----- > From: Louis JOURDAN > To: U.S. Metric Association > Sent: Tuesday, September 03, 2002 7:44 AM > Subject: [USMA:22028] Re: Fwd: [A_A] "millimeter tolerance" > > > At 17:33 -0400 02/09/2, [EMAIL PROTECTED] wrote: > Although posted to a railroad list, this might interest the metric list as > well. > > Note: I replied that the inch is EXACTLY 25.4 mm, by definition. > > Carleton > > > So it appears that the issue was not converting tolerances to Metric but > that the SNCF MAINTAINS TGV LINES TO A TOLERANCE OF 1 mm!!!! Incredible! > What did the FRA find with CSX ("Route of the Pumping Ballast" proudly > stencilled on box cars) the other year? Tolerance of 1 *inch*? For the > record, there are about 25.4 mm in 1 inch. Can you imagine *any* North > American railroad maintaining track to this kind of tolerance? Ha. > > The site is wonderful and really makes one *proud* to be American ... > See http://mercurio.iet.unipi.it/tgv/ for TGV and > http://mercurio.iet.unipi.it/ice/ for ICE info ... > > > A total non sense. I would hope that Americans have other reasons to be > proud... > > > For the record, French TGV track tolerance is lower than 4 mm whilst > conventional speed tracks, including the US ones, are maintained at 20 mm. > See http://www.fra.dot.gov/rdv/volpe/pubs/techppr/errishft.pdf > page 5-6. And this is an official paper from US government (all in SI, at > least in dual units...) > > > Please note, on page 10, a speed of 482 km/hr! > > > Louis >
