2013 v.1 Soma Fabrications Grand Randonneur Base 61
Build
650B/27.5 in × 32 mm
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 599mm |
| Reach | 402mm |
| Stack to Reach Ratio | 1.49:1 |
| Seat Tube Length, C-T | 610mm |
| Top Tube Length, Effective/Horizontal Center | 590mm |
| Top Tube Slope | 1.7deg |
| Head Tube Angle | 73deg |
| Seat Tube Angle | 72.5deg |
| Head Tube Length | 200mm |
| Bottom Bracket Drop | 65mm |
| Bottom Bracket Height | 259mm |
| Chainstay Length | 425mm |
| Chainstay Length Horizontal | 420mm |
| Front-Center | 641mm |
| Front-Center Horizontal | 637mm |
| Wheelbase | 1057mm |
| Fork Offset/Rake | 69mm |
| Trail | 26.9mm very low |
| Mechanical Trail | 25.7mm |
| Wheel Flop | 7.5mm |
| Standover Height | 816mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 147mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 89mm |
Base Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 32mm |
| Tire Outer Diameter | 648mm |
| Bike Length with Tires | 1705mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Steel |
| Fork Material | Steel |
| Brake Type | Rim |
Source:http://somafab.blogspot.com/2013/06/soma-grand-randonneur-official-geometry.html