2017 Chumba Cycles Stella Steel Steel (29" wheels)
- Category
- Hardtail Cross-country MTB
- Design
- Flat Bar, Hardtail (Front suspension)
- Frame
- Steel
- Suspension
- 100mm fork travel
- Features
- Disc brake
Average stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Average stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Average stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Somewhat upright stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry |
Geometry
SM | MD | LG | XL | |
Stack | 607mm | 618mm | 626mm | 638mm |
Reach | 398mm | 416mm | 433mm | 443mm |
Stack to Reach Ratio | 1.53:1 | 1.49:1 | 1.45:1 | 1.44:1 |
Seat Tube Length, C-T | 381mm | 431.8mm | 482.6mm | 533.4mm |
Top Tube Length, Effective/Horizontal Center | 585mm | 605mm | 625mm | 645mm |
Top Tube Slope | 25.5deg | 20.7deg | 16deg | 12.1deg |
Head Tube Angle | 70deg | 70deg | 70deg | 70.5deg |
Seat Tube Angle | 73deg | 73deg | 73deg | 72.5deg |
Head Tube Length | 90mm | 100mm | 110mm | 120mm |
Bottom Bracket Drop | 51.5mm | 51.5mm | 51.5mm | 51.5mm |
Bottom Bracket Height | 320.5mm | 320.5mm | 320.5mm | 320.5mm |
Chainstay Length | 443mm | 443mm | 443mm | 443mm |
Chainstay Length Max | 463mm | 463mm | 463mm | 463mm |
Chainstay Length Horizontal | 440mm | 440mm | 440mm | 440mm |
Chainstay Length Horizontal Max | 460.1mm | 460.1mm | 460.1mm | 460.1mm |
Front-Center | 651mm | 671mm | 689.9mm | 699.9mm |
Front-Center Horizontal | 649mm | 669mm | 688mm | 698mm |
Wheelbase | 1089mm | 1109mm | 1128mm | 1138mm |
Wheelbase Max | 1109mm | 1129mm | 1148mm | 1158mm |
Fork Offset/Rake | 45.9mm | 44mm | 43.1mm | 44.6mm |
Trail | 86.6mm very high | 88.6mm very high | 89.5mm very high | 84.4mm very high |
Mechanical Trail | 81.3mm | 83.2mm | 84.1mm | 79.6mm |
Wheel Flop | 27.8mm | 28.5mm | 28.8mm | 26.6mm |
Tire to Pedal Spindle | 109.1mm 170 mm cranks | 129mm 170 mm cranks | 148mm 170 mm cranks | 157.9mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 150.5mm 170 mm cranks | 150.5mm 170 mm cranks | 150.5mm 170 mm cranks | 150.5mm 170 mm cranks |
Steel (29" wheels) Build
SM | MD | LG | XL | |
Wheel Size | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 2.4in | 2.4in | 2.4in | 2.4in |
Tire Width Max | 2.4in | 2.4in | 2.4in | 2.4in |
Tire Outer Diameter | 743.9mm | 743.9mm | 743.9mm | 743.9mm |
Bike Length with Tires | 1832.9mm | 1852.9mm | 1871.9mm | 1881.9mm |
Stack and Reach vs. Category Trend
Very Upright
Somewhat Upright
Average
Somewhat Aggressive
Very Aggressive
The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.
Learn more about the Upright/Aggressive ScaleCategory Trend
Hardtail Cross-country MTBSource:Bike Counterculture Geometry Database