Bike-on-Bike
Default Config
Insights
Somewhat aggressive stack and reach vs trend of all-road/gravel bikes
Design deviates from other sizes of Surly Bikes Midnight Special
Very upright stack and reach vs trend of sport touring bikes
Design deviates from other sizes of Rivendell Bicycle Works A. Homer Hilsen
Geometry
Stack | 544mm | 575mm +31mm |
Reach | 379mm | 361mm -18mm |
Stack to Reach Ratio | 1.44:1 | 1.59:1 |
Seat Tube Length, C-T | — | 510mm |
Seat Tube Length, C-TTT | 500mm | — |
Top Tube Length, Effective/Horizontal Center | — | 555mm |
Top Tube Length, Effective/Horizontal HT Top | 540mm | — |
Top Tube Length, Actual C-C | 531mm | 539.1mm +8.1mm |
Top Tube Slope | 4.9deg | 6deg +1.1deg |
Head Tube Angle | 72deg | 71deg -1deg |
Seat Tube Angle | 73.5deg | 71.5deg -2deg |
Head Tube Length | 110mm | — |
Bottom Bracket Drop | 65mm | 67mm +2mm |
Bottom Bracket Height | 274mm | 265mm -9mm |
Chainstay Length | 425mm | 475mm +50mm |
Chainstay Length Horizontal | 420mm | 470.3mm +50.3mm |
Front-Center | 590.6mm | 595.5mm +4.9mm |
Front-Center Horizontal | 587mm | 591.8mm +4.8mm |
Wheelbase | 1007mm | 1062mm +55mm |
Fork Offset/Rake | 50mm | 52.8mm +2.8mm |
Fork Length (Axle-To-Crown) | 400mm | — |
Trail | 57.6mm mid/neutral | 58.5mm +0.9mm mid/neutral |
Mechanical Trail | 54.8mm | 55.3mm +0.5mm |
Wheel Flop | 16.9mm | 18mm +1.1mm |
Standover Height | 778mm | 784mm +6mm |
Tire to Pedal Spindle | 81.6mm 170 mm cranks | 93.5mm +11.9mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 104mm 170 mm cranks | 95mm -9mm 170 mm cranks |
Build
Wheel Size | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD |
Tire Width | 47mm | 40mm -7mm |
Tire Outer Diameter | 678mm | 664mm -14mm |
Bike Length with Tires | 1685mm | 1726mm +41mm |
Crank Length | 170mm | — |
Handlebar Width | 400mm | — |
Stem Length | 80mm | — |
Stem Angle | 6deg | — |
| Suspension Type | Rigid, non-suspension corrected | Rigid, non-suspension corrected |
| Bar Type | Drop Bar | Drop Bar |
| Frame Material | Steel | Steel |
| Fork Material | Steel | Steel |
| Brake Type | Disc | Rim |
Meta
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| Source | https://surlybikes.com/bikes/midnight_special | https://cdn.shopify.com/s/files/1/1403/7343/files/RBW_Bicycle_Geometry_Table_-_May_2023.pdf?v=1687890742 |
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