Molded, inspected and built under one roof.
Precision tooling, controlled curing and expert craftsmanship.
The winding machine, 2023. In 2015 our team made the first filament wound bicycle rims; the method has moved on.
Molded for a flawless wall
Run your hand along a Venn rim: smooth, even, and no clear coat hiding anything. That surface is the last thing the process makes, not something added at the end to cover it up.
It starts with articulated, multi-part tooling, the kind aerospace relies on and rim making rarely does, and a mold surface finished to an exacting standard. The carbon goes in preformed to net shape, so nothing is left to chance, and every cure runs under controlled pressure and temperature. What comes out is a fully compacted wall, virtually free of voids: light, strong, and the same rim every time.
Then we prove it. Every Venn rim model passes our impact test, 100 J for road and gravel and up to 150 J for downhill, where the UCI asks 40 J. Every rim is checked before it ships, and on 29-inch and 700c rims its weight stays within 15 g of what we list.
The winding era, 2023: 1k tape laid under computer control.
PLC controlled molding
Cure held at ±1 °C and ±0.1 bar, start to finish.
A PLC controlled molding process using high tolerance molds with a specially treated surface, with layup preparation in a clean room environment to eliminate surface and layup imperfections. Temperature and pressure are held precisely through the entire curing cycle, ensuring:
Six quality checkpoints
Every wheel passes multiple quality-control checks through the manufacturing process, from raw material batch to the finished, laced wheel.
Material inspection
Pre-preg carbon fiber validation and batch testing.
Layup verification
Laser projection systems ensure accurate fiber placement.
Cure monitoring
Real-time tracking of temperature and pressure cycles.
Dimensional inspection
Post-cure checks against precise geometric tolerances.
Surface finish QC
Inspection for cosmetic perfection and structural integrity.
Final assembly check
Verification of spoke tension, trueness, and balance.
Laminate micrograph. Void-free walls, documented per batch.
Precision assembly
Wheel assembly combines precision machinery with the oversight of skilled technicians:
Tensioned and trued by hand by expert wheel builders.