1985 Bridgestone Cycle Co. 400 Base 19” (485mm)
Build
630mm BSD × 32 mm
Insights
Very aggressive stack and reach vs trend of sport touring bikes
Design deviates from other sizes of Bridgestone Cycle Co. 400
Stack and Reach vs. Category Trend
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Geometry
| Stack | 483.9mm |
| Reach | 390.7mm |
| Stack to Reach Ratio | 1.24:1 |
| Seat Tube Length, C-T | 485mm |
| Seat Tube Length, C-C | 470mm |
| Top Tube Length, Effective/Horizontal Center | 535mm |
| Top Tube Length, Actual C-C | 535mm |
| Top Tube Slope | 0deg |
| Head Tube Angle | 72deg |
| Seat Tube Angle | 73.5deg |
| Bottom Bracket Drop | 50.1mm |
| Bottom Bracket Height | 296.9mm |
| Chainstay Length | 425mm |
| Chainstay Length Horizontal | 422mm |
| Front-Center | 588.2mm |
| Front-Center Horizontal | 586.1mm |
| Wheelbase | 1008.1mm |
| Fork Offset/Rake | 50mm |
| Trail | 60.2mm mid/neutral |
| Mechanical Trail | 57.2mm |
| Wheel Flop | 17.7mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 71.2mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 126.9mm |
Base Build
| Wheel Size | 630mm BSD |
| Tire Width | 32mm |
| Tire Outer Diameter | 694mm |
| Bike Length with Tires | 1702.1mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Steel |
| Fork Material | Steel |
| Brake Type | Rim |
Source:sheldonbrown.com