1983 Specialized Bicycles Expedition Base 51
Build
700C/29 in × 28 mm
Insights
Design deviates from other sizes of Specialized Bicycles Expedition
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 532.9mm |
| Reach | 354.5mm |
| Stack to Reach Ratio | 1.5:1 |
| Seat Tube Length, C-C | 510mm |
| Top Tube Length, Effective/Horizontal Center | 524.1mm |
| Top Tube Length, Actual C-C | 520mm |
| Top Tube Slope | 1.5deg |
| Head Tube Angle | 70deg |
| Seat Tube Angle | 72.5deg |
| Bottom Bracket Drop | 63.8mm |
| Bottom Bracket Height | 275.2mm |
| Chainstay Length | 450mm |
| Chainstay Length Horizontal | 445.5mm |
| Front-Center | 592mm |
| Front-Center Horizontal | 588.6mm |
| Wheelbase | 1034mm |
| Fork Offset/Rake | 60mm |
| Trail | 59.5mm mid/neutral |
| Mechanical Trail | 55.9mm |
| Wheel Flop | 19.1mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 83mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 105.2mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 28mm |
| Tire Outer Diameter | 678mm |
| Bike Length with Tires | 1712mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Steel |
| Fork Material | Steel |
| Brake Type | Rim |
Source:http://crankbased.blogspot.com/2015/01/1983-specialized-expedition.html