Technical entry
High Pivot Suspension
High-pivot suspension describes a rear-suspension design whose fixed main pivot or moving instant center sits substantially higher than on […]
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Concepts
Core terms and principles used to understand bicycle geometry, suspension behavior, setup, performance, and service.
38 technical entries
Technical entry
Axle Path
Axle path is the trajectory followed by a bicycle’s rear axle as the rear suspension moves through its travel. […]
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Super Boost Plus
Super Boost Plus is a rear frame-and-hub interface based on 12 × 157 mm spacing. It gives hub and […]
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Anti-Rise
Anti-rise describes how forces generated by the rear brake interact with a bicycle’s rear suspension during deceleration. It is […]
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Seat Tube Angle
Seat tube angle describes the orientation of a bicycle’s seat tube or virtual seatpost line relative to the ground. […]
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Chainline
Chainline is the lateral position of a bicycle’s chainring relative to the frame centerline and rear sprockets. Correct chainline […]
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Pedal Assist (PAS)
Pedal assist, commonly abbreviated PAS, is an e-bike control system that activates the motor in response to the rider […]
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Layup Schedule
A layup schedule is the manufacturing plan that defines the material, shape, orientation, position, and stacking order of every […]
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Boost Spacing
Boost is a mountain-bike hub-spacing standard that uses 110 mm front and 148 mm rear hub widths with thru-axles. […]
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Head Tube Angle
Axle-to-crown is a fork-length measurement taken between the center of the front axle and the crown-race seat at the […]
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Axle-to-Crown
Axle-to-crown is a fork-length measurement taken between the center of the front axle and the crown-race seat at the […]
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Effective Top Tube
Effective top tube (ETT) is the horizontal distance between a specified point on the head tube and the seat-tube […]
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