Bike-on-Bike
Default Config
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
Geometry
Stack | 546mm | 560mm +14mm |
Reach | 392mm | 389mm -3mm |
Stack to Reach Ratio | 1.39:1 | 1.44:1 |
Seat Tube Length, C-T | 520mm | — |
Seat Tube Length, C-TTT | — | 540mm |
Top Tube Length, Effective/Horizontal Center | 560mm | — |
Top Tube Length, Effective/Horizontal HT Top | — | 555mm |
Top Tube Length, Actual C-C | — | 552mm |
Top Tube Slope | 5.1deg | 2.4deg -2.7deg |
Head Tube Angle | 71.5deg | 72.5deg +1deg |
Seat Tube Angle | 73deg | 73.5deg +0.5deg |
Head Tube Length | 118mm | 125mm +7mm |
Bottom Bracket Drop | 70mm | 65mm -5mm |
Bottom Bracket Height | 276mm | 274mm -2mm |
Chainstay Length | 442.5mm | 425mm -17.5mm |
Chainstay Length Horizontal | 436.9mm | 420mm -16.9mm |
Front-Center | 628mm | 601.5mm -26.5mm |
Front-Center Horizontal | 624.1mm | 598mm -26.1mm |
Wheelbase | 1061mm | 1018mm -43mm |
Fork Offset/Rake | 63mm | 50mm -13mm |
Fork Length (Axle-To-Crown) | — | 400mm |
Trail | 49.3mm mid/neutral | 54.5mm +5.2mm mid/neutral |
Mechanical Trail | 46.8mm | 51.9mm +5.1mm |
Wheel Flop | 14.9mm | 15.6mm +0.7mm |
Standover Height | 777mm | 806mm +29mm |
Tire to Pedal Spindle | 112mm 170 mm cranks | 87.5mm -24.5mm 175 mm cranks |
Pedal Spindle to Ground Clearance | 106mm 170 mm cranks | 99mm -7mm 175 mm cranks |
Build
Wheel Size | 700C/29 in 622 mm BSD | 650B/27.5 in 584 mm BSD |
Tire Width | 35mm | 47mm +12mm |
Tire Outer Diameter | 692mm | 678mm -14mm |
Bike Length with Tires | 1753mm | 1696mm -57mm |
Crank Length | — | 175mm |
Handlebar Width | — | 420mm |
Stem Length | — | 100mm |
Stem Angle | — | 6deg |
| Suspension Type | Rigid, non-suspension corrected | Rigid, non-suspension corrected |
| Bar Type | Swept Back Bar | Drop Bar |
| Frame Material | Steel | Steel |
| Fork Material | Steel | Steel |
| Brake Type | Disc | Disc |
Meta
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| Source | https://www.pelagobicycles.com/bicycles/hankocommuter.html | https://surlybikes.com/bikes/midnight_special |
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