2017 Chumba Cycles URSA 29plus Backcountry Base XL
Build
700C/29 in × 3 in
Insights
Somewhat aggressive stack and reach vs trend of hardtail cross-country mtb bikes
Design deviates from other sizes of Chumba Cycles URSA 29plus Backcountry
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
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Geometry
| Stack | 616mm |
| Reach | 454mm |
| Stack to Reach Ratio | 1.36:1 |
| Seat Tube Length, C-T | 520.7mm |
| Top Tube Length, Effective/Horizontal Center | 645mm |
| Top Tube Slope | 11.1deg |
| Head Tube Angle | 69deg |
| Seat Tube Angle | 72.5deg |
| Head Tube Length | 115mm |
| Bottom Bracket Drop | 56mm |
| Bottom Bracket Height | 331.2mm |
| Chainstay Length | 460mm |
| Chainstay Length Max | 460mm |
| Chainstay Length Horizontal | 456.6mm |
| Chainstay Length Horizontal Max | 456.6mm |
| Front-Center | 717.6mm |
| Front-Center Horizontal | 715.4mm |
| Wheelbase | 1172mm |
| Wheelbase Max | 1172mm |
| Fork Offset/Rake | 43.4mm |
| Fork Length (Axle-To-Crown) | 490mm |
| Trail | 102.2mm very high |
| Mechanical Trail | 95.4mm |
| Wheel Flop | 34.2mm |
| Standover Height | 825.5mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 160.4mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 161.2mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 3in |
| Tire Outer Diameter | 774.4mm |
| Bike Length with Tires | 1946.4mm |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | Unknown |
| Suspension Sag | Unknown |
| Frame Material | Steel |
| Fork Material | Unknown |
| Brake Type | Disc |
Source:Bike Counterculture Geometry Database