2024 Soma Fabrications Rufus Base

Design
Drop Bar, Rigid, non-suspension corrected
Frame
Steel
Fork
Steel
Features
Disc brake
Very aggressive stack and reachvs category
Very aggressive stack and reachvs category

Geometry

Small
Large
Stack
437mm
509mm
Reach
388mm
424mm
Stack to Reach Ratio
1.13:1
1.2:1
Seat Tube Length, C-T
380mm
460mm
Top Tube Length, Effective/Horizontal Center
530mm
590mm
Top Tube Slope
8.5deg
7.2deg
Head Tube Angle
73deg
73deg
Seat Tube Angle
72deg
72deg
Head Tube Length
160mm
240mm
Bottom Bracket Drop
-30mm
-30mm
Bottom Bracket Height
282.5mm
282.5mm
Chainstay Length
420mm
420mm
Chainstay Length Horizontal
418.9mm
418.9mm
Front-Center
556.9mm
616.8mm
Front-Center Horizontal
556.1mm
616.1mm
Wheelbase
975mm
1035mm
Fork Offset/Rake
28mm
28mm
Fork Length (Axle-To-Crown)
320mm
320mm
Trail
47.9mm
mid/​neutral
47.9mm
mid/​neutral
Mechanical Trail
45.8mm
45.8mm
Wheel Flop
13.4mm
13.4mm
Standover Height
654mm
728mm
Tire to Pedal Spindle
134.4mm
170 mm cranks
194.3mm
170 mm cranks
Pedal Spindle to Ground Clearance
112.5mm
170 mm cranks
112.5mm
170 mm cranks

Base Build

Small
Large
Wheel Size
20 in (406)
406 mm BSD
20 in (406)
406 mm BSD
Tire Width
1.95in
1.95in
Tire Width Max
2.3in
2.3in
Tire Outer Diameter
505.1mm
505.1mm
Bike Length with Tires
1480.1mm
1540.1mm

Published Sizing Recommendations

Height
4 ft 11 in
to
5 ft 7 in
5 ft 6 in
to
6 ft 3 in

Stack and Reach vs. Category Trend

Very Upright
Somewhat Upright
Average
Somewhat Aggressive
Very Aggressive

The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.

Learn more about the Upright/Aggressive Scale
Category Trend
Mini-velo/Folding
Source:https://www.somafab.com/archives/product/soma-rufus-mini-velo