1983 Specialized Bicycles Expedition Base 68
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 | 685.6mm |
| Reach | 406.9mm |
| Stack to Reach Ratio | 1.68:1 |
| Seat Tube Length, C-C | 680mm |
| Top Tube Length, Effective/Horizontal Center | 610mm |
| Top Tube Length, Actual C-C | 610mm |
| Top Tube Slope | 0deg |
| Head Tube Angle | 73.5deg |
| Seat Tube Angle | 73.5deg |
| Bottom Bracket Drop | 65mm |
| Bottom Bracket Height | 274mm |
| Chainstay Length | 450mm |
| Chainstay Length Horizontal | 445.3mm |
| Front-Center | 647mm |
| Front-Center Horizontal | 643.7mm |
| Wheelbase | 1089mm |
| Fork Offset/Rake | 51mm |
| Trail | 47.2mm mid/neutral |
| Mechanical Trail | 45.3mm |
| Wheel Flop | 12.9mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 138mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 104mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 28mm |
| Tire Outer Diameter | 678mm |
| Bike Length with Tires | 1767mm |
| 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