2021 J.Laverack Bicycles J.ACK Frameset 48
Build
700C/29 in × 32 mm
Insights
Somewhat upright stack and reach vs trend of endurance road bikes
Design deviates from other sizes of J.Laverack Bicycles J.ACK
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 521.2mm |
| Reach | 358mm |
| Stack to Reach Ratio | 1.46:1 |
| Seat Tube Length, C-T | 480mm |
| Top Tube Length, Effective/Horizontal Unknown | 517.3mm |
| Top Tube Length, Actual C-C | 501.4mm |
| Top Tube Slope | 7.1deg |
| Head Tube Angle | 70.5deg |
| Seat Tube Angle | 73deg |
| Head Tube Length | 100mm |
| Bottom Bracket Drop | 70mm |
| Bottom Bracket Height | 273mm |
| Chainstay Length | 420mm |
| Chainstay Length Horizontal | 414.1mm |
| Front-Center | 573.7mm |
| Front-Center Horizontal | 569.5mm |
| Wheelbase | 983.6mm |
| Fork Offset/Rake | 45mm |
| Fork Length (Axle-To-Crown) | 395mm |
| Trail | 73.7mm high |
| Mechanical Trail | 69.5mm |
| Wheel Flop | 23.2mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 60.7mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 103mm |
Frameset Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 32mm |
| Tire Outer Diameter | 686mm |
| Bike Length with Tires | 1669.6mm |
| Crank Length | 170mm |
| Handlebar Width | 39cm |
| Stem Length | 85mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Titanium |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 152 cm to 158 cm |
Source:https://www.jlaverack.co.uk/jack-frameset-build/