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
Very upright stack and reach vs trend of all-road/gravel bikes
Geometry
Stack | 560mm | 602.5mm +42.5mm |
Reach | 389mm | 371.5mm -17.5mm |
Stack to Reach Ratio | 1.44:1 | 1.62:1 |
Seat Tube Length, C-T | — | 510mm |
Seat Tube Length, C-TTT | 540mm | — |
Top Tube Length, Effective/Horizontal HT Top | 555mm | — |
Top Tube Length, Actual C-C | 552mm | 528.9mm -23.1mm |
Top Tube Length, Unknown | — | 550mm |
Top Tube Slope | 2.4deg | 12.4deg +10deg |
Head Tube Angle | 72.5deg | 71.5deg -1deg |
Seat Tube Angle | 73.5deg | 73.5deg +0deg |
Head Tube Length | 125mm | 165mm +40mm |
Bottom Bracket Drop | 65mm | 75mm +10mm |
Bottom Bracket Height | 274mm | 265.3mm -8.7mm |
Chainstay Length | 425mm | 450mm +25mm |
Chainstay Length Horizontal | 420mm | 443.7mm +23.7mm |
Front-Center | 601.5mm | 615mm +13.5mm |
Front-Center Horizontal | 598mm | 610.4mm +12.4mm |
Wheelbase | 1018mm | 1054.1mm +36.1mm |
Fork Offset/Rake | 50mm | 50mm +0mm |
Fork Length (Axle-To-Crown) | 400mm | — |
Fork Length, Unknown | — | 405mm |
Trail | 54.5mm mid/neutral | 61.1mm +6.6mm mid/neutral |
Mechanical Trail | 51.9mm | 58mm +6.1mm |
Wheel Flop | 15.6mm | 18.4mm +2.8mm |
Standover Height | 806mm | 790mm -16mm |
Tire to Pedal Spindle | 87.5mm 175 mm cranks | 104.7mm +17.2mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 99mm 175 mm cranks | 95.3mm -3.7mm 170 mm cranks |
Build
Wheel Size | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD |
Tire Width | 47mm | 1.9in +0.05in |
Tire Outer Diameter | 678mm | 680.5mm +2.5mm |
Bike Length with Tires | 1696mm | 1734.6mm +38.6mm |
Crank Length | 175mm | 170mm -5mm |
Handlebar Width | 420mm | — |
Stem Length | 100mm | — |
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 | Disc |
Meta
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| Source | https://surlybikes.com/bikes/midnight_special | https://www.statebicycle.com/collections/off-road-bikes/products/4130-all-road-pigeon-gray-650b-700c |
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