2023 Ironbridge 1779 Rohloff 48

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
480mm
Top Tube Length, Effective/Horizontal HT Top
525mm
Head Tube Angle
70.5deg
Seat Tube Angle
75deg
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
741mm
Tire to Pedal Spindle Distance
With 170 mm cranks
72.9mm
Pedal Spindle to Ground Clearance
With 170 mm cranks
94mm

Rohloff 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
Drop Bar
Frame Material
Steel
Fork Material
Carbon/Composite
Brake Type
Disc
Source:https://www.ironbridge-bicycles.co.uk/bicycles/1779-handmade-full-fillet-frame/