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Urban & Gravity

Understand wheels, contact, shared-space etiquette and controlled movement before planning a street or park session.

BMX, inline skating, longboarding and parkour share an interest in movement, but their equipment and stopping methods differ. Use each guide for its stated activity rather than transferring a technique between them because the terrain looks similar.

Start with a permitted space and dependable basic control. A feature is a whole route: approach, contact, exit and the people who may cross it. The learning guides explain mechanical ideas while the preparation guides help organise equipment and session questions.

A trick name or a wheel specification does not establish readiness. Choose an appropriate coached exercise, inspect the actual equipment and reassess after an impact or a change in the surface.

Put the guide to use

  • BMX inspection log CSV worksheet

    Record the component, a repeatable symptom and the follow-up so a mechanic can understand what changed.

Where to start

  • Prepare the bike

    Separate inspection from repair and identify the actual component instructions.

  • Read the park

    Find a suitable practice area and understand the traffic between features.

  • Read a BMX geometry chart

    Locate the references behind reach, stack and wheelbase before comparing frames.

All guides in this collection

Newest publications first. A revision keeps the article's original publication date.

Ivory and amber skateboard wheels on a dark workbench show rounded urethane lips, riding surfaces and metal bearing seats.
Wheel Specifications Medium

Skateboard Wheels: Diameter, Durometer and Contact Patch

Compare skateboard and longboard wheel diameter, durometer, contact-patch width and profile. Read labels accurately and check what each specification leaves out.

Side view of a charcoal BMX bike showing its frame triangle, high-rise handlebar and two wheels on a concrete studio floor.
BMX Frame Geometry Medium

BMX Frame Geometry: Top Tube, Reach, Stack and Wheelbase

Read BMX geometry charts by separating top-tube length, frame reach, stack and wheelbase. Compare reference points, missing dimensions and complete-bike setup.

A BMX bicycle in a workshop with its front wheel and brake components visible beside inspection tools.
BMX Maintenance Medium

BMX Pre-Ride Check: Wheels, Brakes and Bike Inspection

Organise a BMX pre-ride check and write a useful fault report. Download a reusable inspection log with clearly labelled fictional examples for a mechanic.

A quiet concrete skatepark with helmeted riders waiting in separate areas beside clear riding lanes.
Skatepark Planning Medium

Skatepark Etiquette: Taking Turns and Planning Lines

Learn skatepark etiquette for queues, shared lines, blind bowls and filming. Use a practical session example to choose where to wait, ride and finish.

An aggressive inline skater using a street obstacle in an urban industrial setting.
Aggressive Inline High

Aggressive Inline Skates: Flat vs Anti-Rocker Setups

Compare flat and anti-rocker aggressive skate setups, understand soul plates and H-blocks, and check frame compatibility before practising grinds.

A BMX rider above a concrete bowl transition in a skatepark at warm evening light.
Bowl / Ramp BMX High

BMX Bowl Riding: How Pumping and Transitions Work

Understand BMX bowl pumping, transition shape and line choice. Compare banks, curved walls and coping before choosing a suitable coached session.

A street BMX rider beside an urban ledge with a peg-equipped bicycle.
Street BMX High

BMX Grinds Explained: Pegs, Contact and Compatibility

Understand BMX grind contacts, peg cores and sleeves, axle compatibility, and the approach and exit questions that define a complete street line.

A downhill longboard rider low over a board on a mountain road with protective clothing.
Longboard Downhill Extreme

Downhill Longboarding: Speed, Grip and Course Planning

Understand downhill longboarding speed, kinetic energy, aerodynamic drag and wheel grip, with a worked comparison and questions for a controlled course.

A longboard rider controlling a low slide on an empty paved mountain-road scene.
Longboard Freeride High

Longboard Freeride: Slide Wheels, Grip and Setup

Compare longboard freeride wheel lips, contact patches and durometer. Understand slide release, grip recovery and how to evaluate a complete setup.

A parkour practitioner moving over a low urban concrete obstacle.
Parkour Vaulting Medium

Parkour Vaults: Obstacle Assessment and Progression

Understand parkour vault planning through obstacle shape, hand support, approach and landing space. Compare training conditions before choosing a movement.