2023 Ironbridge 1779 Pinion 47
Build
700C/29 in × 40 mm
Insights
Somewhat upright stack and reach vs trend of sport touring bikes
Design deviates from other sizes of Ironbridge 1779
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 559.8mm |
| Reach | 372.3mm |
| Stack to Reach Ratio | 1.5:1 |
| Seat Tube Length, C-T | 470mm |
| Top Tube Length, Effective/Horizontal HT Top | 520mm |
| Head Tube Angle | 70.5deg |
| Seat Tube Angle | 75.5deg |
| Head Tube Length | 100mm |
| Bottom Bracket Drop | 87mm |
| Bottom Bracket Height | 264mm |
| Chainstay Length | 450mm |
| Chainstay Length Horizontal | 441.5mm |
| Front-Center | 593.9mm |
| Front-Center Horizontal | 587.5mm |
| Wheelbase | 1029mm |
| Fork Offset/Rake | 45mm |
| Fork Length (Axle-To-Crown) | 400mm |
| Trail | 76.6mm high |
| Mechanical Trail | 72.2mm |
| Wheel Flop | 24.1mm |
| Standover Height | 736mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 72.9mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 94mm |
Pinion Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 40mm |
| Tire Outer Diameter | 702mm |
| Bike Length with Tires | 1731mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Swept Back Bar |
| Frame Material | Steel |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Source:https://www.ironbridge-bicycles.co.uk/bicycles/1779-pinion/