2023 Author Ultrasonic 27,5 14"
Build
650B/27.5 in × 2 in
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 575mm |
| Reach | 385mm |
| Stack to Reach Ratio | 1.49:1 |
| Seat Tube Length, C-T | 356mm |
| Top Tube Length, Effective/Horizontal HT Top | 550mm |
| Top Tube Length, Actual C-C | 544mm |
| Head Tube Angle | 69deg |
| Effective Seat Tube Angle, Seat Tube Top | 74deg |
| Head Tube Length | 110mm |
| Bottom Bracket Drop | 45mm |
| Bottom Bracket Height | 297.8mm |
| Chainstay Length | 420mm |
| Chainstay Length Horizontal | 417.6mm |
| Front-Center | 636mm |
| Front-Center Horizontal | 634.4mm |
| Wheelbase | 1052mm |
| Fork Offset/Rake | 43mm |
| Fork Length (On-Axis) | 475mm |
| Trail | 85.5mm very high |
| Mechanical Trail | 79.9mm |
| Wheel Flop | 28.6mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 123.2mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 127.8mm |
27,5 Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 2in |
| Tire Outer Diameter | 685.6mm |
| Bike Length with Tires | 1737.6mm |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | Unknown |
| Suspension Sag | Unknown |
| Frame Material | Unknown |
| Fork Material | Unknown |
| Brake Type | Unknown |
Published Sizing Recommendations
| Height | 140 cm to 158 cm |
Source:https://cz.author.eu/ultrasonic-27-5-2023-ua42944100#!technicka-specifikace