1988 Mongoose Bicycles Switchback Base
- Category
- Rigid MTB
- Design
- Flat Bar, Rigid, non-suspension corrected
- Frame
- Steel
- Fork
- Steel
- Features
- Rim brake
Geometry
20" | 16" | 18" | |
Stack | 500mm | — | — |
Reach | 417mm | — | — |
Stack to Reach Ratio | 1.2:1 | — | — |
Seat Tube Length, C-T | 509mm | 394mm | 456mm |
Top Tube Length, Effective/Horizontal Unknown | 582mm | 547mm | 577mm |
Top Tube Slope | 0deg | — | — |
Head Tube Angle | 70deg | — | — |
Seat Tube Angle | 71deg | — | — |
Head Tube Length | 130mm | 76mm | 72mm |
Bottom Bracket Drop | 30mm | 39.5mm | 39.4mm |
Bottom Bracket Height | 338.3mm | 241.5mm | 241.6mm |
Chainstay Length | 445mm | 445mm | 445mm |
Chainstay Length Horizontal | 444mm | 443.2mm | 443.3mm |
Front-Center | 638mm | 628mm | 623mm |
Front-Center Horizontal | 636mm | 626.8mm | 621.8mm |
Wheelbase | 1080mm | 1070mm | 1065mm |
Fork Offset/Rake | 50mm | 50mm | 50mm |
Fork Length (On-Axis) | 800mm | — | — |
Trail | 80.8mm very high | — — | — — |
Mechanical Trail | 76mm | — | — |
Wheel Flop | 26mm | — | — |
Tire to Pedal Spindle | 99.7mm 170 mm cranks | 177mm 170 mm cranks | 172mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 168.3mm 170 mm cranks | 71.5mm 170 mm cranks | 71.6mm 170 mm cranks |
Base Build
20" | 16" | 18" | |
Wheel Size | 26 in 559 mm BSD | 26 in 559 mm BSD | 26 in 559 mm BSD |
Tire Width | 1.5in | 1.5mm | 1.5mm |
Tire Outer Diameter | 736.6mm | 562mm | 562mm |
Bike Length with Tires | 1816.6mm | 1632mm | 1627mm |
Crank Length | 170mm | 170mm | 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
Rigid MTBSource:http://www.vintagemongoose.com/pdfs/mongoose_cat88.pdf