2019 Author Spirit Base 21
Build
700C/29 in × 2.1 in
Insights
Somewhat upright stack and reach vs trend of hardtail cross-country mtb bikes
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 652mm |
| Reach | 441mm |
| Stack to Reach Ratio | 1.48:1 |
| Seat Tube Length, C-T | 535mm |
| Top Tube Length, Effective/Horizontal HT Top | 640mm |
| Top Tube Slope | 13.2deg |
| Head Tube Angle | 69deg |
| Seat Tube Angle | 73deg |
| Head Tube Length | 140mm |
| Bottom Bracket Drop | 63mm |
| Bottom Bracket Height | 301.3mm |
| Chainstay Length | 445mm |
| Chainstay Length Horizontal | 440.5mm |
| Front-Center | 724.2mm |
| Front-Center Horizontal | 721.5mm |
| Wheelbase | 1162mm |
| Fork Offset/Rake | 51mm |
| Fork Length (On-Axis) | 510mm |
| Trail | 85.2mm very high |
| Mechanical Trail | 79.6mm |
| Wheel Flop | 28.5mm |
| Tire to Pedal Spindle Distance With 175 mm cranks | 184.9mm |
| Pedal Spindle to Ground Clearance With 175 mm cranks | 126.3mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 2.1in |
| Tire Outer Diameter | 728.7mm |
| Bike Length with Tires | 1890.7mm |
| Crank Length | 175mm |
| Handlebar Width | 700mm |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | 100mm |
| Suspension Sag | Unknown |
| Frame Material | Aluminum |
| Fork Material | Unknown |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 188 cm to 202 cm |
Source:http://en.author.eu/cross-country/mtb-29/author-spirit-29-2019-ua42906602-6404#!geometrie-modelu