1999 Schwinn Bicycle Company Homegrown Homegrown Pro 21"
Build
26 in × 1.95 in
Insights
Somewhat aggressive stack and reach vs trend of hardtail cross-country mtb bikes
Design deviates from other sizes of Schwinn Bicycle Company Homegrown
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
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Geometry
| Stack | 595.2mm |
| Reach | 428.9mm |
| Stack to Reach Ratio | 1.39:1 |
| Seat Tube Length, C-T | 533.4mm |
| Top Tube Length, Effective/Horizontal HT Top | 609.6mm |
| Head Tube Angle | 71.5deg |
| Seat Tube Angle | 73deg |
| Head Tube Length | 140mm |
| Bottom Bracket Drop | 31.9mm |
| Bottom Bracket Height | 297.2mm |
| Chainstay Length | 424.2mm |
| Chainstay Length Horizontal | 423mm |
| Front-Center | 662.4mm |
| Front-Center Horizontal | 661.6mm |
| Wheelbase | 1084.6mm |
| Fork Offset/Rake | 41.9mm |
| Fork Length (Axle-To-Crown) | 450mm |
| Trail | 65.9mm high |
| Mechanical Trail | 62.5mm |
| Wheel Flop | 19.8mm |
| Standover Height | 797.6mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 163.3mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 127.2mm |
Homegrown Pro Build
| Wheel Size | 26 inch (559mm BSD) |
| Tire Width | 1.95in |
| Tire Outer Diameter | 658.1mm |
| Bike Length with Tires | 1742.6mm |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | 80mm |
| Suspension Sag | Unknown |
| Frame Material | Aluminum |
| Fork Material | Unknown |
| Brake Type | Rim |
Source:https://bonustomato.com/wp-content/uploads/2023/11/1999_hg_geo.jpg