TECHNOLOGY STORIES BIKE INFO, GEOMETRY ... - Vintage Trek

For 2002
The 2002 Alpha frame platform
got a style update; round oversized
down tube and traditional
fastback seat stays. While we like
the traditional look, we're even
more excited about the increase
in frame rigidity and overall
weight reduction.
Geometry
The Alpha geometry is a more
forgiving road geometry, but still
very close to what the racers ride.
By forgiving, we mean it’s stable,
and has more of a tendency to
ride in a straight line. It’s less
reactive to weight changes that
would make a race bike turn, so
you can relax more. And if you
move around on the bike to sightsee,
the bike won’t react as readily.
Ride
The forgiving geometry of the
Alpha Road frame makes it a
great bike for a beginning racer,
or an experienced day tourer.
These frames provide excellent frame rigidity and
good road sensitivity. However, they are not overly
harsh. Our engineers designed the frame materials, tubing
diameters, and wall thicknesses to ride smoothly,
and to avoid the teeth rattling that some aluminum
frame create.
Frame details
Alpha frames are aluminum.
Alpha frames provide 2 water bottle mounts, except
the 43cm frames which have seat tubes which are too
short.
Alpha cable routing uses shift pegs on the down
tube for use of Shimano cable stops, for easy on-the-fly
adjustment of the indexed shift systems. They use an
open brake cable under the top tube, leaving a clean
look. Although these frames are at home on the race
course, they are also great for more recreational riding.
We’ve added eyelets on the rear dropouts to provide
mounting points for a rack or fenders. This way, the
Alpha frames can be used for commuting or light touring.
MILLIMETERS
INCHES
Alpha Road
Frame sizes
Head angle
Seat angle
Standover
Seat tube
Head tube
Eff top tube
Chainstays
BB height
Offset
Trail
Wheelbase
Standover
Seat tube
Head tube
Eff top tube
Chainstays
BB height
Offset
Trail
Wheelbase
2002 Trek Technical Manual
Alpha Road
43 50 52 54 56 58 60 62
71.5 71.5 71.5 72.0 72.5 72.5 72.5 72.5
75.0 75.0 75.0 74.0 73.5 73.0 73.0 73.0
740 754 768 788 806 825
430 500 520 540 560 580 600 620
100 100 100 100 115 135 150 170
530 530 530 544 555 575 580 585
415 415 415 415 415 415 415 415
266 266 266 266 268 268 268 268
47.0 47 47 47 45.0 45.0 45.0 45.0
64 64 64 61 60 60 60 60
1000 1000 1000 1000 1001 1016 1021 1026
29.1 29.7 30.2 31.0 31.7 32.5
16.9 19.7 20.5 21.3 22.0 22.8 23.6 24.4
3.9 3.9 3.9 3.9 4.5 5.3 5.9 6.7
20.9 20.9 20.9 21.4 21.9 22.6 22.8 23.0
16.3 16.3 16.3 16.3 16.3 16.3 16.3 16.3
10.5 10.5 10.5 10.5 10.5 10.5 10.5 10.5
1.9 1.9 1.9 1.9 1.8 1.8 1.8 1.8
2.5 2.5 2.5 2.4 2.4 2.4 2.4 2.4
39.4 39.4 39.4 39.4 39.4 40.0 40.2 40.4
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