2019 The Light Blue Cycles Darwin Speedtour Base
- Category
- Touring
- Design
- Flat Bar, Rigid, non-suspension corrected
- Frame
- Steel
- Fork
- Steel
- Features
- Disc brake
Geometry
Small | Small/Medium | Medium | Medium/Large | Large | |
Stack | 582mm | 603mm | 615mm | 626mm | 647mm |
Reach | 368mm | 376mm | 388mm | 400mm | 408mm |
Stack to Reach Ratio | 1.58:1 | 1.6:1 | 1.59:1 | 1.57:1 | 1.59:1 |
Seat Tube Length, C-T | 500mm | 520mm | 535mm | 550mm | 570mm |
Seat Tube Length, Effective HT Top | 607mm | 639mm | 641mm | 653mm | 675mm |
Top Tube Length, Effective/Horizontal Center | 541mm | 555mm | 570mm | 585mm | 600mm |
Top Tube Length, Actual C-C | 521mm | 534mm | 548mm | 564mm | 575mm |
Top Tube Slope | 11.1deg | 11.7deg | 12.3deg | 10.5deg | 16.5deg |
Head Tube Angle | 70deg | 70.5deg | 71deg | 71.5deg | 72deg |
Seat Tube Angle | 73.5deg | 73.5deg | 73.5deg | 73.5deg | 73.5deg |
Head Tube Length | 150mm | 170mm | 180mm | 190mm | 210mm |
Bottom Bracket Drop | 72mm | 72mm | 72mm | 72mm | 72mm |
Bottom Bracket Height | 274mm | 274mm | 274mm | 274mm | 274mm |
Chainstay Length | 445mm | 445mm | 445mm | 445mm | 445mm |
Chainstay Length Horizontal | 439.1mm | 439.1mm | 439.1mm | 439.1mm | 439.1mm |
Front-Center | 612mm | 622mm | 632mm | 642mm | 640mm |
Front-Center Horizontal | 607.9mm | 617.9mm | 627.9mm | 637.9mm | 635.9mm |
Wheelbase | 1047mm | 1057mm | 1067mm | 1077mm | 1075mm |
Fork Offset/Rake | 50mm | 50mm | 50mm | 50mm | 50mm |
Trail | 72.7mm high | 69.5mm high | 66.3mm high | 63.1mm mid/neutral | 59.9mm mid/neutral |
Mechanical Trail | 68.3mm | 65.5mm | 62.7mm | 59.8mm | 56.9mm |
Wheel Flop | 23.4mm | 21.9mm | 20.4mm | 19mm | 17.6mm |
Standover Height | 759mm | 779mm | 793mm | 804mm | 823mm |
Tire to Pedal Spindle | 96mm 170 mm cranks | 106mm 170 mm cranks | 116mm 170 mm cranks | 126mm 170 mm cranks | 124mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 104mm 170 mm cranks | 104mm 170 mm cranks | 104mm 170 mm cranks | 104mm 170 mm cranks | 104mm 170 mm cranks |
Base Build
Small | Small/Medium | Medium | Medium/Large | Large | |
Wheel Size | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 35mm | 35mm | 35mm | 35mm | 35mm |
Tire Outer Diameter | 692mm | 692mm | 692mm | 692mm | 692mm |
Bike Length with Tires | 1739mm | 1749mm | 1759mm | 1769mm | 1767mm |
Stack and Reach vs. Category Trend
Very Upright
Somewhat Upright
Average
Somewhat Aggressive
Very Aggressive
The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.
Learn more about the Upright/Aggressive ScaleCategory Trend
TouringSource:http://www.ison-distribution.com/pdf/Light-Blue-Darwin-Geometry-2019.pdf