1990 Miyata Alumicross Base

Category
Cyclocross
Design
Drop Bar, Rigid, non-suspension corrected
Frame
Aluminum
Fork
Steel
Features
Rim brake
Average stack and reachvs category
Somewhat aggressive stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category
Somewhat upright stack and reachvs category
Somewhat upright stack and reachvs category
Very upright stack and reachvs category
Very upright stack and reachvs category

Geometry

46
48
50
52
54
56
58
60
63
Stack
473mm
492.1mm
511.4mm
530.6mm
549.7mm
568.8mm
588.1mm
607.3mm
635.9mm
Reach
354.1mm
363.3mm
368mm
372.2mm
376.3mm
375.5mm
380.2mm
379.3mm
375.6mm
Stack to Reach Ratio
1.34:1
1.35:1
1.39:1
1.43:1
1.46:1
1.52:1
1.55:1
1.6:1
1.69:1
Seat Tube Length, C-C
460mm
480mm
500mm
520mm
540mm
560mm
580mm
600mm
630mm
Top Tube Length, Effective/Horizontal Center
500mm
515mm
525mm
535mm
545mm
550mm
560mm
565mm
570mm
Top Tube Length, Actual C-C
500mm
515mm
525mm
535mm
545mm
550mm
560mm
565mm
570mm
Top Tube Slope
0deg
0deg
0deg
0deg
0deg
0deg
0deg
0deg
0deg
Head Tube Angle
71deg
71deg
72deg
72deg
72deg
72deg
73deg
73deg
73deg
Seat Tube Angle
73deg
73deg
73deg
73deg
73deg
73deg
73deg
73deg
73deg
Head Tube Length
31.5mm
73.2mm
87.2mm
107.2mm
124.9mm
144.9mm
158.9mm
178.9mm
208.9mm
Bottom Bracket Drop
70mm
49.6mm
49.7mm
49.8mm
49.9mm
50mm
50.1mm
50.1mm
50.1mm
Bottom Bracket Height
276mm
296.4mm
296.3mm
296.2mm
296.1mm
296mm
295.9mm
295.9mm
295.9mm
Chainstay Length
430mm
430mm
430mm
430mm
430mm
430mm
430mm
430mm
430mm
Chainstay Length Horizontal
424.3mm
427.1mm
427.1mm
427.1mm
427.1mm
427.1mm
427.1mm
427.1mm
427.1mm
Front-Center
575mm
580mm
585mm
590mm
595mm
600mm
605mm
605mm
605mm
Front-Center Horizontal
570.7mm
577.9mm
582.9mm
587.9mm
592.9mm
597.9mm
602.9mm
602.9mm
602.9mm
Wheelbase
995mm
1005mm
1010mm
1015mm
1020mm
1025mm
1030mm
1030mm
1030mm
Fork Offset/Rake
60mm
60mm
55mm
55mm
50mm
50mm
45mm
45mm
45mm
Fork Length (Axle-To-Crown)
400mm
400mm
400mm
400mm
400mm
400mm
400mm
400mm
400mm
Trail
55.7mm
mid/​neutral
55.7mm
mid/​neutral
54.6mm
mid/​neutral
54.6mm
mid/​neutral
59.9mm
mid/​neutral
59.9mm
mid/​neutral
58.7mm
mid/​neutral
58.7mm
mid/​neutral
58.7mm
mid/​neutral
Mechanical Trail
52.7mm
52.7mm
51.9mm
51.9mm
56.9mm
56.9mm
56.2mm
56.2mm
56.2mm
Wheel Flop
17.1mm
17.1mm
16mm
16mm
17.6mm
17.6mm
16.4mm
16.4mm
16.4mm
Tire to Pedal Spindle
59mm
170 mm cranks
64mm
170 mm cranks
69mm
170 mm cranks
74mm
170 mm cranks
79mm
170 mm cranks
84mm
170 mm cranks
89mm
170 mm cranks
89mm
170 mm cranks
89mm
170 mm cranks
Pedal Spindle to Ground Clearance
106mm
170 mm cranks
126.4mm
170 mm cranks
126.3mm
170 mm cranks
126.2mm
170 mm cranks
126.1mm
170 mm cranks
126mm
170 mm cranks
125.9mm
170 mm cranks
125.9mm
170 mm cranks
125.9mm
170 mm cranks

Base Build

46
48
50
52
54
56
58
60
63
Wheel Size
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
Tire Width
35mm
35mm
35mm
35mm
35mm
35mm
35mm
35mm
35mm
Tire Outer Diameter
692mm
692mm
692mm
692mm
692mm
692mm
692mm
692mm
692mm
Bike Length with Tires
1687mm
1697mm
1702mm
1707mm
1712mm
1717mm
1722mm
1722mm
1722mm

Stack and Reach vs. Category Trend

Very Upright
Somewhat Upright
Average
Somewhat Aggressive
Very Aggressive

The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.

Learn more about the Upright/Aggressive Scale
Category Trend
Cyclocross
Source:https://www.ragandbone.ca/PDFs/Miyata%20Catalogue%20PDFs/Miyata%20Catalogue%2090.pdf