2023 Ironbridge 1779 Pinion 55

Build

700C/29 in × 40 mm

Insights

Very upright stack and reach vs trend of sport touring bikes
Design deviates from other sizes of Ironbridge 1779
Bar type unusual for category
This: Swept Back Bar
Category: Drop Bar
vs sport touring bikes

Stack and Reach vs. Category Trend
View all sizes

Geometry

Stack
608mm
Reach
375.9mm
Stack to Reach Ratio
1.62:1
Seat Tube Length, C-T
550mm
Top Tube Length, Effective/Horizontal HT Top
555mm
Head Tube Angle
72deg
Seat Tube Angle
73.5deg
Head Tube Length
145mm
Bottom Bracket Drop
87mm
Bottom Bracket Height
264mm
Chainstay Length
450mm
Chainstay Length Horizontal
441.5mm
Front-Center
598.8mm
Front-Center Horizontal
592.5mm
Wheelbase
1034mm
Fork Offset/Rake
45mm
Fork Length (Axle-To-Crown)
400mm
Trail
66.7mm
high
Mechanical Trail
63.5mm
Wheel Flop
19.6mm
Standover Height
797mm
Tire to Pedal Spindle Distance
With 170 mm cranks
77.8mm
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
1736mm
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/