2022 TanTan Cycling (Seraph) FM639 Base 50
Build
700C/29 in × 28 mm
Insights
Average stack and reach vs trend of performance road bikes
Design deviates from other sizes of TanTan Cycling (Seraph) FM639
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 509mm |
| Reach | 370mm |
| Stack to Reach Ratio | 1.38:1 |
| Top Tube Length, Effective/Horizontal Unknown | 526mm |
| Head Tube Angle | 71deg |
| Seat Tube Angle | 73deg |
| Head Tube Length | 105mm |
| Bottom Bracket Drop | 72mm |
| Bottom Bracket Height | 267mm |
| Chainstay Length | 410mm |
| Chainstay Length Horizontal | 403.6mm |
| Front-Center | 573mm |
| Front-Center Horizontal | 568.4mm |
| Wheelbase | 972mm |
| Fork Offset/Rake | 45mm |
| Trail | 69.1mm high |
| Mechanical Trail | 65.4mm |
| Wheel Flop | 21.3mm |
| Standover Height | 715mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 64mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 97mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 28mm |
| Tire Outer Diameter | 678mm |
| Bike Length with Tires | 1650mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Unknown |
| Fork Material | Unknown |
| Brake Type | Unknown |
Source:https://www.seraphbikes.com/hidden-cable-disc-brake-road-bike-frame-fm639-bb86-press-fit-full-toray-t1000-max-tire-700x28c-custom-paint-p4715973.html