2012 Soma Fabrications San Marcos Base 54

Build

650B/27.5 in × 28 mm

Insights

Very upright stack and reach vs trend of sport touring bikes
Design deviates from other sizes of Soma Fabrications San Marcos

Stack and Reach vs. Category Trend
View all sizes

Geometry

Stack
603mm
Reach
376mm
Stack to Reach Ratio
1.6:1
Seat Tube Length, C-T
540mm
Top Tube Length, Effective/Horizontal Center
575mm
Top Tube Slope
9.4deg
Head Tube Angle
71deg
Seat Tube Angle
71.8deg
Head Tube Length
209mm
Bottom Bracket Drop
65mm
Bottom Bracket Height
255mm
Chainstay Length
445mm
Chainstay Length Horizontal
440.2mm
Front-Center
619.2mm
Front-Center Horizontal
615.8mm
Wheelbase
1056mm
Fork Offset/Rake
52mm
Fork Length (Axle-To-Crown)
369mm
Trail
55.2mm
mid/​neutral
Mechanical Trail
52.2mm
Wheel Flop
17mm
Standover Height
815.3mm
Tire to Pedal Spindle Distance
With 170 mm cranks
129.2mm
Pedal Spindle to Ground Clearance
With 170 mm cranks
85mm

Base Build

Wheel Size
650B, 27.5 inch (584mm BSD)
Tire Width
28mm
Tire Outer Diameter
640mm
Bike Length with Tires
1696mm
Suspension Type
Rigid, non-suspension corrected
Bar Type
Drop Bar
Frame Material
Steel
Fork Material
Steel
Brake Type
Rim
Source:http://www.somafab.com/archives/product/san-marcos-frame-set