1997 Heron Bicycles Rally/Road Base
- Category
- Endurance Road
- Design
- Drop Bar, Rigid, non-suspension corrected
- Frame
- Steel
- Fork
- Steel
- Features
- Rim brake
Very aggressive stack and reachvs category | Very aggressive stack and reachvs category | Very aggressive stack and reachvs category | Very aggressive stack and reachvs category | Very aggressive stack and reachvs category | Very aggressive stack and reachvs category | Very aggressive stack and reachvs category | Very aggressive stack and reachvs category |
Geometry
50 | 52 | 54 | 56 | 58 | 60 | 62 | 64 | |
Stack | 481mm | 499.2mm | 517.1mm | 534.9mm | 554mm | 573.1mm | 592.2mm | 611.2mm |
Reach | 385.8mm | 396.8mm | 391.9mm | 402mm | 406mm | 410mm | 418.9mm | 427.9mm |
Stack to Reach Ratio | 1.25:1 | 1.26:1 | 1.32:1 | 1.33:1 | 1.36:1 | 1.4:1 | 1.41:1 | 1.43:1 |
Seat Tube Length, C-T | 500mm | 520mm | 540mm | 560mm | 580mm | 600mm | 620mm | 640mm |
Top Tube Length, Effective/Horizontal Center | 525mm | 545mm | 550mm | 570mm | 580mm | 590mm | 605mm | 620mm |
Top Tube Length, Actual C-C | 525mm | 545mm | 550mm | 570mm | 580mm | 590mm | 605mm | 620mm |
Top Tube Slope | 0deg | 0deg | 0deg | 0deg | 0deg | 0deg | 0deg | 0deg |
Head Tube Angle | 72deg | 73deg | 73deg | 73.5deg | 73.5deg | 73.5deg | 73.5deg | 73.5deg |
Seat Tube Angle | 74deg | 73.5deg | 73deg | 72.5deg | 72.5deg | 72.5deg | 72.5deg | 72.5deg |
Bottom Bracket Drop | 45mm | 75mm | 75mm | 75mm | 75mm | 75mm | 75mm | 75mm |
Bottom Bracket Height | 275mm | 264mm | 264mm | 264mm | 264mm | 264mm | 264mm | 264mm |
Chainstay Length | 405mm | 425mm | 425mm | 425mm | 425mm | 425mm | 425mm | 425mm |
Chainstay Length Horizontal | 402.5mm | 418.3mm | 418.3mm | 418.3mm | 418.3mm | 418.3mm | 418.3mm | 418.3mm |
Fork Offset/Rake | 40mm | 45mm | 45mm | 42.5mm | 42.5mm | 42.5mm | 42.5mm | 43mm |
Trail | 61.9mm mid/​neutral | 56.6mm mid/​neutral | 56.6mm mid/​neutral | 56.1mm mid/​neutral | 56.1mm mid/​neutral | 56.1mm mid/​neutral | 56.1mm mid/​neutral | 55.6mm mid/​neutral |
Mechanical Trail | 58.9mm | 54.1mm | 54.1mm | 53.8mm | 53.8mm | 53.8mm | 53.8mm | 53.3mm |
Wheel Flop | 18.2mm | 15.8mm | 15.8mm | 15.3mm | 15.3mm | 15.3mm | 15.3mm | 15.1mm |
Pedal Spindle to Ground Clearance | 105mm 170 mm cranks | 94mm 170 mm cranks | 94mm 170 mm cranks | 94mm 170 mm cranks | 94mm 170 mm cranks | 94mm 170 mm cranks | 94mm 170 mm cranks | 94mm 170 mm cranks |
Base Build
50 | 52 | 54 | 56 | 58 | 60 | 62 | 64 | |
Wheel Size | 650B/27.5 in 584 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 | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 28mm | 28mm | 28mm | 28mm | 28mm | 28mm | 28mm | 28mm |
Tire Width Max | 33mm | 33mm | 33mm | 33mm | 33mm | 33mm | 33mm | 33mm |
Tire Outer Diameter | 640mm | 678mm | 678mm | 678mm | 678mm | 678mm | 678mm | 678mm |
Crank Length | — | — | — | — | — | — | — | 170mm |
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
Endurance RoadSource:http://www.heronbicycles.com/geometry.html