Bike-on-Bike
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Insights
Somewhat upright stack and reach vs trend of hardtail trail mtb bikes
Design deviates from other sizes of Jamis Bicycles Dragonslayer 27.5+
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Average stack and reach vs trend of off-road touring bikes
Geometry
Stack | 635mm | 670mm +35mm |
Reach | 426mm | 405mm -21mm |
Stack to Reach Ratio | 1.49:1 | 1.65:1 |
Seat Tube Length, C-T | 482.6mm | 560mm +77.4mm |
Top Tube Length, Effective/Horizontal Center | 620mm | — |
Top Tube Length, Effective/Horizontal HT Top | — | 610mm |
Top Tube Slope | 17deg | — |
Head Tube Angle | 68deg | 68deg +0deg |
Seat Tube Angle | 73deg | — |
Effective Seat Tube Angle, ETT HT Top | — | 73deg |
Head Tube Length | 110mm | 165mm +55mm |
Bottom Bracket Drop | 47mm | 68mm +21mm |
Bottom Bracket Height | 321.2mm | 302.7mm -18.5mm |
Chainstay Length | 435mm | 445mm +10mm |
Chainstay Length Horizontal | 432.5mm | 439.8mm +7.3mm |
Front-Center | 720.1mm | 706.5mm -13.6mm |
Front-Center Horizontal | 718.6mm | 703.2mm -15.4mm |
Wheelbase | 1151mm | 1143mm -8mm |
Fork Offset/Rake | 51mm | 51.5mm +0.5mm |
Fork Length (Axle-To-Crown) | — | 495mm |
Trail | 93.8mm very high | 94.2mm +0.4mm very high |
Mechanical Trail | 87mm | 87.4mm +0.4mm |
Wheel Flop | 32.6mm | 32.7mm +0.1mm |
Standover Height | 840mm | — |
Tire to Pedal Spindle | 181.9mm 170 mm cranks | 165.8mm -16.1mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 151.2mm 170 mm cranks | 132.7mm -18.5mm 170 mm cranks |
Build
Wheel Size | 650B/27.5 in 584 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 3in | 2.35in -0.65in |
Tire Outer Diameter | 736.4mm | 741.4mm +5mm |
Bike Length with Tires | 1887.4mm | 1884.4mm -3mm |
Crank Length | 170mm | — |
Handlebar Width | 710mm | — |
Stem Length | 80mm | — |
| Suspension Type | Hardtail (Front suspension) | Rigid, suspension corrected |
| Bar Type | Flat Bar | Drop Bar |
| Fork Travel | 120mm | — |
| Rear Travel | Unknown | — |
| Suspension Sag | Unknown | — |
| Frame Material | Steel | Steel |
| Fork Material | Unknown | Carbon/Composite |
| Brake Type | Disc | Disc |
Meta
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| Source | http://www.jamisbikes.com/usa/dragonslayer27pro.html | https://eskercycles.com/products/2024-lorax-frameset |
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