2018 Black Mountain Cycles Road+ Base M (50cm)
Build
650B/27.5 in × 47 mm
Insights
Somewhat upright stack and reach vs trend of all-road/gravel bikes
Design deviates from other sizes of Black Mountain Cycles Road+
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 595mm |
| Reach | 377mm |
| Stack to Reach Ratio | 1.58:1 |
| Seat Tube Length, C-T | 500mm |
| Top Tube Length, Effective/Horizontal Center | 560mm |
| Top Tube Slope | 12.6deg |
| Head Tube Angle | 72deg |
| Seat Tube Angle | 73deg |
| Head Tube Length | 160mm |
| Bottom Bracket Drop | 73mm |
| Bottom Bracket Height | 266mm |
| Chainstay Length | 432mm |
| Chainstay Length Max | 432mm |
| Chainstay Length Horizontal | 425.8mm |
| Chainstay Length Horizontal Max | 425.8mm |
| Front-Center | 614mm |
| Front-Center Horizontal | 614.2mm |
| Wheelbase | 1040mm |
| Wheelbase Max | 1040mm |
| Fork Offset/Rake | 60mm |
| Fork Length (On-Axis) | 390mm |
| Trail | 47.1mm mid/neutral |
| Mechanical Trail | 44.8mm |
| Wheel Flop | 13.8mm |
| Standover Height | 775.5mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 105mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 96mm |
Base Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 47mm |
| Tire Outer Diameter | 678mm |
| Bike Length with Tires | 1718mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Steel |
| Fork Material | Steel |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 5 ft 7 in to 5 ft 11 in |
Source:https://blackmtncycles.com/frames/road-plus/, http://blackmtncycles.com/tech-info/mcd-road-frame-geometry/