2013 Btwin Triban 3a 48
Build
650C × 21 mm
Insights
Very aggressive stack and reach vs trend of endurance road bikes
Design deviates from other sizes of Btwin Triban
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 486mm |
| Reach | 379mm |
| Stack to Reach Ratio | 1.28:1 |
| Seat Tube Length, C-C | 395mm |
| Top Tube Length, Effective/Horizontal HT Top | 519mm |
| Head Tube Angle | 72.5deg |
| Seat Tube Angle | 74deg |
| Head Tube Length | 120mm |
| Bottom Bracket Drop | 37mm |
| Bottom Bracket Height | 269.5mm |
| Chainstay Length | 385mm |
| Chainstay Length Horizontal | 383.2mm |
| Front-Center | 565mm |
| Front-Center Horizontal | 563.8mm |
| Wheelbase | 947mm |
| Fork Offset/Rake | 41mm |
| Trail | 53.7mm mid/neutral |
| Mechanical Trail | 51.2mm |
| Wheel Flop | 15.4mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 88.5mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 99.5mm |
3a Build
| Wheel Size | 650C (571mm BSD) |
| Tire Width | 21mm |
| Tire Outer Diameter | 613mm |
| Bike Length with Tires | 1560mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Aluminum |
| Fork Material | Steel |
| Brake Type | Rim |
Source:https://triban3owners.freeforums.net/thread/5105/triban-geometry