1984 Raleigh Bikes Portage Base 25"
Build
650B/27.5 in × 35 mm
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 635.7mm |
| Reach | 371.3mm |
| Stack to Reach Ratio | 1.71:1 |
| Seat Tube Length, C-TTT | 647.7mm |
| Top Tube Length, Effective/Horizontal Center | 577.9mm |
| Top Tube Length, Actual C-C | 577.9mm |
| Top Tube Slope | 0deg |
| Head Tube Angle | 72deg |
| Seat Tube Angle | 72deg |
| Bottom Bracket Drop | 69.9mm |
| Bottom Bracket Height | 257.2mm |
| Chainstay Length | 444.5mm |
| Chainstay Length Horizontal | 439mm |
| Front-Center | 606.5mm |
| Front-Center Horizontal | 602.4mm |
| Wheelbase | 1041.4mm |
| Fork Offset/Rake | 55.9mm |
| Trail | 47.5mm mid/neutral |
| Mechanical Trail | 45.2mm |
| Wheel Flop | 14mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 109.5mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 87.2mm |
Base Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 35mm |
| Tire Outer Diameter | 654mm |
| Bike Length with Tires | 1695.4mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Steel |
| Fork Material | Steel |
| Brake Type | Rim |
Source:https://simplicityvintagecycles.files.wordpress.com/2013/11/1984_raleigh_touring_catalogue.pdf