2016 v.2 Soma Fabrications Grand Randonneur Base
- Category
- Low-trail
- Design
- Drop Bar, Rigid, non-suspension corrected
- Frame
- Steel
- Fork
- Steel
- Features
- Rim brake
Geometry
49.5 | 52 | 55 | 58 | 61 | 65 | |
Stack | 528mm | 543mm | 565mm | 589mm | 613mm | 651mm |
Reach | 381mm | 387mm | 392mm | 395mm | 398mm | 405mm |
Stack to Reach Ratio | 1.39:1 | 1.4:1 | 1.44:1 | 1.49:1 | 1.54:1 | 1.61:1 |
Seat Tube Length, C-T | 495mm | 520mm | 550mm | 580mm | 610mm | 650mm |
Top Tube Length, Effective/Horizontal Center | 530mm | 545mm | 560mm | 577mm | 590mm | 610mm |
Top Tube Slope | 5.7deg | 4.7deg | 3.9deg | 3.5deg | 3.1deg | 3deg |
Head Tube Angle | 72deg | 72deg | 72.5deg | 73deg | 73deg | 73deg |
Seat Tube Angle | 74.5deg | 74deg | 73.5deg | 73deg | 72.5deg | 72.5deg |
Head Tube Length | 130mm | 146mm | 167mm | 190mm | 215mm | 255mm |
Bottom Bracket Drop | 65mm | 65mm | 65mm | 65mm | 65mm | 65mm |
Bottom Bracket Height | 265.5mm | 265.5mm | 265.5mm | 265.5mm | 265.5mm | 265.5mm |
Chainstay Length | 425mm | 425mm | 425mm | 425mm | 425mm | 425mm |
Chainstay Length Horizontal | 420mm | 420mm | 420mm | 420mm | 420mm | 420mm |
Front-Center | 607mm | 618mm | 625mm | 631mm | 641mm | 659mm |
Front-Center Horizontal | 604mm | 616mm | 622mm | 627mm | 637mm | 657mm |
Wheelbase | 1024mm | 1036mm | 1042mm | 1047mm | 1057mm | 1077mm |
Fork Offset/Rake | 69mm | 69mm | 69mm | 69mm | 69mm | 69mm |
Trail | 34.8mm low | 34.8mm low | 31.9mm low | 28.9mm very low | 28.9mm very low | 28.9mm very low |
Mechanical Trail | 33.1mm | 33.1mm | 30.4mm | 27.6mm | 27.6mm | 27.6mm |
Wheel Flop | 10.2mm | 10.2mm | 9.1mm | 8.1mm | 8.1mm | 8.1mm |
Standover Height | 744.2mm | 762mm | 792.5mm | 817.9mm | 844.6mm | 881.4mm |
Tire to Pedal Spindle | 106.5mm 170 mm cranks | 117.5mm 170 mm cranks | 124.5mm 170 mm cranks | 130.5mm 170 mm cranks | 140.5mm 170 mm cranks | 158.5mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 95.5mm 170 mm cranks | 95.5mm 170 mm cranks | 95.5mm 170 mm cranks | 95.5mm 170 mm cranks | 95.5mm 170 mm cranks | 95.5mm 170 mm cranks |
Base Build
49.5 | 52 | 55 | 58 | 61 | 65 | |
Wheel Size | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD |
Tire Width | 38mm | 38mm | 38mm | 38mm | 38mm | 38mm |
Tire Outer Diameter | 661mm | 661mm | 661mm | 661mm | 661mm | 661mm |
Bike Length with Tires | 1685mm | 1697mm | 1703mm | 1708mm | 1718mm | 1738mm |
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 ScaleCategory Trend
Low-trailSource:http://www.somafab.com/archives/product/grand-randonneur-frame-set