2020 roll: Bicycle Company A:1R Base Size 3
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 | 631.6mm |
| Reach | 402.6mm |
| Stack to Reach Ratio | 1.57:1 |
| Seat Tube Length, C-TTT | 540mm |
| Top Tube Length, Actual C-C | 620mm |
| Head Tube Angle | 71deg |
| Seat Tube Angle | 71deg |
| Head Tube Length | 195mm |
| Bottom Bracket Drop | 60mm |
| Bottom Bracket Height | 291mm |
| Chainstay Length | 450mm |
| Chainstay Length Horizontal | 446mm |
| Front-Center | 649.8mm |
| Front-Center Horizontal | 647mm |
| Wheelbase | 1093mm |
| Fork Offset/Rake | 45mm |
| Fork Length (On-Axis) | 405mm |
| Trail | 73.3mm high |
| Mechanical Trail | 69.3mm |
| Wheel Flop | 22.6mm |
| Standover Height | 795mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 128.8mm |
| 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 | 1795mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Aluminum |
| Fork Material | Aluminum |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 6 ft 0 in to 6 ft 4 in |
Source:https://www.rollbicycles.com/pages/bike-geometry