----- Original Message ----- 
From:  [somebody]
 The BNSF main line is closer to 148.
> > > > > > > > > >
This doesn't tell us anything about the BNSF mainline, but it does tell us
about somebody's observation skills.  As Don Thompson has already pointed
out, there has never been track out there in the real world with a rail
height greater that 8 inches.  If you don't carry a tape-measure with you
when rail-fanning, pick up a weed-stem, set one end at the bottom of the
rail and break it at the top of the rail-head, and measure it when you get
home.

I don't endorse trespassing, but if you can get down and read the rail
weight in pounds/yard, cast in the side of the rail, you can look that
number up when you get home and get all the dimesnions.  URLs for two good
data sheets have recently been posted on this list with all the data you
need.  I did that a couple years ago (try to read a rail) at an operating
outdoor trolly museum (St Paul MN area I think) and ladies in the tour group
said that man must be looking for his contact lens.  But most modellers (I
hope) knew what I was doing.

As a reminder, our scale factor is 64.  So you multiply 0.148 inch by 64 and
you find 148 rail represents rail about 9½  inches high.  Not to be found on
the BNSF or anywhere else.  I believe all the rail on the PRR that was 8
inches high (8 in ÷ 64 = 0.125 in = code 125 rail) has been replaced.
Improved metalurgy has developed stronger rail without that much height.

Tom Hawley  --  Lansing  Michigan




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