2020 roll: Bicycle Company A:1R Base Size 2
Build
700C/29 in × 40 mm
Insights
Average stack and reach vs trend of all-road/gravel bikes
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 607.9mm |
| Reach | 394.8mm |
| Stack to Reach Ratio | 1.54:1 |
| Seat Tube Length, C-TTT | 485mm |
| Top Tube Length, Actual C-C | 600mm |
| Head Tube Angle | 71deg |
| Seat Tube Angle | 71.5deg |
| Head Tube Length | 170mm |
| Bottom Bracket Drop | 60mm |
| Bottom Bracket Height | 291mm |
| Chainstay Length | 450mm |
| Chainstay Length Horizontal | 446mm |
| Front-Center | 633.9mm |
| Front-Center Horizontal | 631mm |
| Wheelbase | 1077mm |
| Fork Offset/Rake | 45mm |
| Fork Length (On-Axis) | 405mm |
| Trail | 73.3mm high |
| Mechanical Trail | 69.3mm |
| Wheel Flop | 22.6mm |
| Standover Height | 755mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 112.9mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 121mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 40mm |
| Tire Outer Diameter | 702mm |
| Bike Length with Tires | 1779mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Aluminum |
| Fork Material | Aluminum |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 5 ft 6 in to 5 ft 11 in |
Source:https://www.rollbicycles.com/pages/bike-geometry