Bike-on-Bike
Default Config
Default Config
Insights
Somewhat upright stack and reach vs trend of progressive gravel bikes
Design deviates from other sizes of SPCYCLE G028
Average stack and reach vs trend of all-road/gravel bikes
Design deviates from other sizes of TanTan Cycling (Seraph) GR047
Geometry
Stack | 555mm | 556mm +1mm |
Reach | 385mm | 372mm -13mm |
Stack to Reach Ratio | 1.44:1 | 1.49:1 |
Seat Tube Length, C-T | — | 430mm |
Seat Tube Length, C-TTT | 445mm | — |
Top Tube Length, Effective/Horizontal HT Top | — | 528mm |
Top Tube Length, Effective/Horizontal Unknown | 533.6mm | — |
Top Tube Slope | 11.9deg | 16.2deg +4.3deg |
Head Tube Angle | 71deg | 70.5deg -0.5deg |
Seat Tube Angle | 74deg | 74.3deg +0.3deg |
Head Tube Length | 115mm | 125mm +10mm |
Bottom Bracket Drop | 80mm | 76mm -4mm |
Bottom Bracket Height | 286mm | 280mm -6mm |
Chainstay Length | 435mm | 430mm -5mm |
Chainstay Length Horizontal | 427.6mm | 423.2mm -4.4mm |
Front-Center | 612mm | 600mm -12mm |
Front-Center Horizontal | 606.4mm | 595.2mm -11.2mm |
Wheelbase | 1034mm | 1018.4mm -15.6mm |
Fork Offset/Rake | 55mm | 50mm -5mm |
Fork Length, Unknown | 405mm | — |
Trail | 67.9mm high | 73mm +5.1mm high |
Mechanical Trail | 64.2mm | 68.8mm +4.6mm |
Wheel Flop | 20.9mm | 23mm +2.1mm |
Tire to Pedal Spindle | 76mm 170 mm cranks | 74mm -2mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 116mm 170 mm cranks | 110mm -6mm 170 mm cranks |
Build
Wheel Size | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 55mm | 45mm -10mm |
Tire Outer Diameter | 732mm | 712mm -20mm |
Bike Length with Tires | 1766mm | 1730.4mm -35.6mm |
Crank Length | — | 170mm |
Handlebar Width | — | 420mm |
Stem Length | — | 100mm |
| Suspension Type | Rigid, non-suspension corrected | Rigid, non-suspension corrected |
| Bar Type | Drop Bar | Drop Bar |
| Frame Material | Carbon/Composite | Carbon/Composite |
| Fork Material | Carbon/Composite | Carbon/Composite |
| Brake Type | Disc | Disc |
Meta
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| Source | https://velo.gravelo.ru/2026/04/22/spcycle-g028/ | https://www.seraphbikes.com/flat-mount-gravel-bike-frame-gr047-full-hidden-cable-t47-threaded-bottom-bracket-4043464953cm-p4814109.html |
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