1989 Miyata Touring 618GT 57
Build
700C/29 in × 32 mm
Insights
Stack and Reach vs. Category Trend
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Geometry
| Top Tube Length, Effective/Horizontal Unknown | 560mm |
| Head Tube Angle | 72deg |
| Seat Tube Angle | 72deg |
| Bottom Bracket Drop | 71.7mm |
| Bottom Bracket Height | 271.3mm |
| Chainstay Length | 445mm |
| Chainstay Length Horizontal | 439.2mm |
| Front-Center | 615mm |
| Front-Center Horizontal | 610.8mm |
| Wheelbase | 1050mm |
| Fork Offset/Rake | 60mm |
| Trail | 48.4mm mid/neutral |
| Mechanical Trail | 46mm |
| Wheel Flop | 14.2mm |
| Tire to Pedal Spindle Distance With 172 mm cranks | 100mm |
| Pedal Spindle to Ground Clearance With 172 mm cranks | 99.3mm |
618GT Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 32mm |
| Tire Outer Diameter | 686mm |
| Bike Length with Tires | 1736mm |
| Crank Length | 172mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Steel |
| Fork Material | Steel |
| Brake Type | Rim |
Source:http://www.peterbrueggeman.com/cr/miyata-1989.pdf