2019 Author Traction 29 Base
- Category
- Hardtail Cross-country MTB
- Design
- Flat Bar, Hardtail (Front suspension)
- Frame
- Aluminum
- Suspension
- 100mm fork travel
- Features
- Disc brake
Somewhat upright 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 | Somewhat upright stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry |
Geometry
17" | 19" | 21" | |
Stack | 629mm | 638mm | 648mm |
Reach | 413mm | 430mm | 447mm |
Stack to Reach Ratio | 1.52:1 | 1.48:1 | 1.45:1 |
Seat Tube Length, C-T | 432mm | 483mm | 535mm |
Top Tube Length, Effective/Horizontal Center | 605mm | 625mm | 645mm |
Top Tube Length, Actual C-C | 584mm | 600mm | 619mm |
Top Tube Slope | 24.8deg | 12deg | 12.2deg |
Head Tube Angle | 70deg | 70deg | 70deg |
Seat Tube Angle | 73deg | 73deg | 73deg |
Head Tube Length | 110mm | 120mm | 130mm |
Bottom Bracket Drop | 61mm | 61mm | 61mm |
Bottom Bracket Height | 307.2mm | 307.2mm | 307.2mm |
Chainstay Length | 443mm | 443mm | 443mm |
Chainstay Length Horizontal | 438.8mm | 438.8mm | 438.8mm |
Front-Center | 677mm | 696.9mm | 717.8mm |
Front-Center Horizontal | 674.2mm | 694.2mm | 715.2mm |
Wheelbase | 1113mm | 1133mm | 1154mm |
Fork Offset/Rake | 51mm | 51mm | 51mm |
Fork Length (Axle-To-Crown) | 510mm | 510mm | 510mm |
Trail | 79.7mm high | 79.7mm high | 79.7mm high |
Mechanical Trail | 74.9mm | 74.9mm | 74.9mm |
Wheel Flop | 25.6mm | 25.6mm | 25.6mm |
Tire to Pedal Spindle | 138.8mm 170 mm cranks | 153.7mm 175 mm cranks | 174.7mm 175 mm cranks |
Pedal Spindle to Ground Clearance | 137.2mm 170 mm cranks | 132.2mm 175 mm cranks | 132.2mm 175 mm cranks |
Base Build
17" | 19" | 21" | |
Wheel Size | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 2.25in | 2.25in | 2.25in |
Tire Outer Diameter | 736.3mm | 736.3mm | 736.3mm |
Bike Length with Tires | 1849.3mm | 1869.3mm | 1890.3mm |
Crank Length | 170mm | 175mm | 175mm |
Handlebar Width | 700mm | 700mm | 700mm |
Published Sizing Recommendations
Height | 168 cm to 179 cm | 178 cm to 189 cm | 188 cm to 202 cm |
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:http://en.author.eu/cross-country/mtb-29/author-traction-29-2019-ua42907202-6404#!geometrie-modelu