2013 v.1 Soma Fabrications Grand Randonneur Base 58

Build

650B/27.5 in × 32 mm

Insights

Somewhat aggressive stack and reach vs trend of low-trail bikes

Stack and Reach vs. Category Trend
View all sizes

Geometry

Stack
570mm
Reach
401mm
Stack to Reach Ratio
1.42:1
Seat Tube Length, C-T
580mm
Top Tube Length, Effective/Horizontal Center
577mm
Top Tube Slope
1.5deg
Head Tube Angle
73deg
Seat Tube Angle
73deg
Head Tube Length
170mm
Bottom Bracket Drop
65mm
Bottom Bracket Height
259mm
Chainstay Length
425mm
Chainstay Length Horizontal
420mm
Front-Center
631mm
Front-Center Horizontal
627mm
Wheelbase
1047mm
Fork Offset/Rake
69mm
Trail
26.9mm
very low
Mechanical Trail
25.7mm
Wheel Flop
7.5mm
Standover Height
788mm
Tire to Pedal Spindle Distance
With 170 mm cranks
137mm
Pedal Spindle to Ground Clearance
With 170 mm cranks
89mm

Base Build

Wheel Size
650B, 27.5 inch (584mm BSD)
Tire Width
32mm
Tire Outer Diameter
648mm
Bike Length with Tires
1695mm
Suspension Type
Rigid, non-suspension corrected
Bar Type
Drop Bar
Frame Material
Steel
Fork Material
Steel
Brake Type
Rim
Source:http://somafab.blogspot.com/2013/06/soma-grand-randonneur-official-geometry.html