----- Original Message -----
From: [email protected]
. . . . . why a train stays on the track. . . . . . . . . it does bear on
the scale/hirail/AF question, in that the thing that keeps an S scale train
on the track is in fact, the same phenomenon that keeps a real train on the
track, while the thing that keeps an AF train on the track actually is the
flange!. . . . . . . . . . . .
> > > > > > > > > > >
This is definitely true for real trains. Specifications in the 1997 Car &
Loco Cyclopedia call for a 1/20 taper on the tread of the wheel. I imagine
S scale wheels are made to similar specifications. The gentle curve from
tread to side of the flange of course helps too. FWIW, Lionel O-27 wheels
have an even more pronounced tread taper.
Tom Hawley -- Lansing Michigan
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