# buildwith · Skills guide: Building human-powered and gravity-powered craft (karts, flying machines, beds, can boats, kinetic sculptures): sources

Cross-cutting skills guide from the skills research (checked 2026-10-04, IST), after the 4 Oct 2026 source-rule audit. Every resource URL shown on the page is logged below. Difficulty and prep time are Curiosta editorial estimates.

| Fact used | Source |
|---|---|
| Skills (this guide): Designing to a rulebook: size, weight, power source and team size; Chassis, steering and brakes for gravity karts; Buoyancy and waterproof materials for water landings and crossings; Light, safe structures with no sharp edges; Team roles, scrutineering and showmanship | Skills research, checked 2026-10-04 (IST) |
| Difficulty (our estimate): Skilled team (bed race and Henley: Some practice); prep time (our estimate): 4–12 weeks depending on the event. Difficulty and prep time are Curiosta editorial estimates for a first-timer, not organiser figures. | Curiosta editorial estimate |
| Refresher, practice and safety steps: Get the current edition's rules before you sketch anything; limits change by city and year. / Power: gravity or human muscle only. Batteries and stored energy are almost always banned for propulsion (allowed for lights or music at Kinetic). / Karts: low stable chassis, robust wheels, brakes on at least two wheels, precise steering, quick driver exit, helmets. / Water: use materials lighter than water that don't waterlog (closed-cell foam, wood, sealed cans); test flotation with the full crew load; flotation jackets. / Can boats: seal cans, tape them into straight strings, bundle them with chicken wire, add a deck. / Frames you carry (beds, BYO boats): light conduit or pipe, capped ends, no sharp edges. / Plan for scrutineering, and rehearse your skit, because judges score creativity and showmanship too. / Build a scale model to the rules. / Test brakes and steering on a gentle slope. / Pool-test flotation with full load; check everyone can swim the distance the rules demand. / Helmets for karts and launches; flotation jackets for water events. / Swim requirements: Flugtag (100 yd), bed race (all competitors). / No stored-energy propulsion; no projectiles or fireworks. | Our summary of the resources below |
| Resource (Official; publisher: Red Bull): The Rules – Red Bull Soapbox Race LA 2026: A compact example of soapbox limits and judging. | https://www.redbull.com/us-en/events/soapbox-race-la-usa-2026/rules-sbr-la |
| Resource (Official; publisher: Red Bull): Red Bull Flugtag rules: Official guidelines: Materials, inspection and launch rules for flying machines. | https://www.redbull.com/us-en/red-bull-flugtag-rules |
| Resource (Official; publisher: Kinetic Universe / Kinetic Grand Championship): Rules, Schedule, Awards 2026 (Kinetic): Human-power, self-sufficiency and safety rules for amphibious sculptures. | https://kineticgrandchampionship.com/s/Rules-Schedule-Awards-2026.pdf |
| Resource (Community-accepted; publisher: Elliot Naess; hosted by Kinetic Grand Championship): How to Build a Kinetic Sculpture – Elliot Naess: A veteran racer's design notes on human-powered amphibious builds. Why accepted: Linked from and hosted on the official KGC Racers page as builder guidance. | https://kineticgrandchampionship.com/s/HowtoBuildaKinetic_ElliotNaess.pdf |
| Resource (Official; publisher: Darwin Lions Beer Can Regatta): Boat Construction – Darwin Lions Beer Can Regatta: Step-by-step can-boat method. | https://beercanregatta.org.au/boat-construction/ |
| Resource (Official; publisher: Great Knaresborough Bed Race (Knaresborough Lions Club)): Bed Race Rules: Bed specs, swim rule and passenger safety gear. | https://www.bedrace.co.uk/about/race-rules |
| Also consulted for the skills section | https://www.henleyontodd.com.au/faqs |
| Applies to: Red Bull Soapbox Race | experiences/red-bull-soapbox-race/ (skills research applies_to / see_also_guides) |
| Applies to: Red Bull Flugtag | experiences/red-bull-flugtag/ (skills research applies_to / see_also_guides) |
| Applies to: Great Knaresborough Bed Race | experiences/knaresborough-bed-race/ (skills research applies_to / see_also_guides) |
| Applies to: Kinetic Grand Championship | experiences/kinetic-grand-championship/ (skills research applies_to / see_also_guides) |
| Applies to: Darwin Lions Beer Can Regatta | experiences/darwin-beer-can-regatta/ (skills research applies_to / see_also_guides) |
| Applies to: Henley-on-Todd Regatta | experiences/henley-on-todd-regatta/ (skills research applies_to / see_also_guides) |