2017 Rivendell Bicycle Works Bombadil Base 56
Build
650B/27.5 in × 55 mm
Insights
Very aggressive stack and reach vs trend of off-road touring bikes
Design deviates from other sizes of Rivendell Bicycle Works Bombadil
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 614mm |
| Reach | 429mm |
| Stack to Reach Ratio | 1.43:1 |
| Seat Tube Length, C-T | 560mm |
| Top Tube Length, Effective/Horizontal Center | 605mm |
| Top Tube Length, Actual C-C | 588.2mm |
| Top Tube Slope | 6deg |
| Head Tube Angle | 70.5deg |
| Seat Tube Angle | 72deg |
| Bottom Bracket Drop | 67mm |
| Bottom Bracket Height | 280mm |
| Chainstay Length | 450mm |
| Chainstay Length Max | 450mm |
| Chainstay Length Horizontal | 445mm |
| Chainstay Length Horizontal Max | 445mm |
| Front-Center | 660mm |
| Front-Center Horizontal | 656.6mm |
| Wheelbase | 1101.6mm |
| Wheelbase Max | 1101.6mm |
| Fork Offset/Rake | 54mm |
| Trail | 65.6mm high |
| Mechanical Trail | 61.8mm |
| Wheel Flop | 20.6mm |
| Standover Height | 850mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 143mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 110mm |
Base Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 55mm |
| Tire Outer Diameter | 694mm |
| Bike Length with Tires | 1795.6mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Swept Back Bar |
| Frame Material | Steel |
| Fork Material | Steel |
| Brake Type | Rim |
Source:https://web.archive.org/web/20170602082329/https://www.rivbike.com/pages/geometry