Engineered,
not guessed.
Every tube on the Apples frame has a job. We designed the frame in CAD, stress-tested it with finite element analysis and only then built it – as light as possible, as strong as needed.
From sketch to frame
CAD design
Geometry, loading area and cable steering are designed digitally – tuned for smaller riders.
FEA simulation
Rider and full load are simulated. We see where the frame works – and where material can go.
Prototype
Welded from 6061 aluminium, painted and assembled – the first frame from production.
Test rides
Prototypes in everyday use in Hamburg – with families, shopping and deliveries.
Tested under load.
In the simulation we load the cargo area and the seat at the same time. The colours show how hard each tube works: blue means plenty of reserve, red the highest load.
Why aluminium?
Light
6061 aluminium weighs about a third as much as steel. The whole bike weighs just 27 kg.
Stiff where it counts
Material exactly where the simulation shows load: cargo area, head tube and seat area.
Rust-free
Aluminium doesn't rust – ideal for a bike that lives outdoors in all weather.