1990 Miyata Alumicross Base 63
Build
700C/29 in × 35 mm
Insights
Very upright stack and reach vs trend of cyclocross bikes
Design deviates from other sizes of Miyata Alumicross
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 635.9mm |
| Reach | 375.6mm |
| Stack to Reach Ratio | 1.69:1 |
| Seat Tube Length, C-C | 630mm |
| Top Tube Length, Effective/Horizontal Center | 570mm |
| Top Tube Length, Actual C-C | 570mm |
| Top Tube Slope | 0deg |
| Head Tube Angle | 73deg |
| Seat Tube Angle | 73deg |
| Head Tube Length | 208.9mm |
| Bottom Bracket Drop | 50.1mm |
| Bottom Bracket Height | 295.9mm |
| Chainstay Length | 430mm |
| Chainstay Length Horizontal | 427.1mm |
| Front-Center | 605mm |
| Front-Center Horizontal | 602.9mm |
| Wheelbase | 1030mm |
| Fork Offset/Rake | 45mm |
| Fork Length (Axle-To-Crown) | 400mm |
| Trail | 58.7mm mid/neutral |
| Mechanical Trail | 56.2mm |
| Wheel Flop | 16.4mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 89mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 125.9mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 35mm |
| Tire Outer Diameter | 692mm |
| Bike Length with Tires | 1722mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Aluminum |
| Fork Material | Steel |
| Brake Type | Rim |
Source:https://www.ragandbone.ca/PDFs/Miyata%20Catalogue%20PDFs/Miyata%20Catalogue%2090.pdf