Venn Carbon Wheels - Available in New Zealand

Posted by Trevor Barrett on


Our filament wound rim range won several of the highest honours in the bicycle and technology industry with filament winding being recognized as the most interesting carbon rim manufacturing technology in the world.

Key Benefits of Filament Winding over Manual Layup

Better quality and batch uniformity

Because filament winding is a machine managed process there are no random layup errors. Uncontrolled layup errors are one of the biggest drawbacks of the manual layup process. This leads to higher accuracy and precision and further contributes to our lower manufacturing costs.

The best method for manufacture of CFRP

Filament winding is theoretically the best method for manufacturing carbon fiber reinforced plastics (CFRP) as all fibers are placed under constant tension, in a single plane (cf. weaving which crimps the fibers) and in an optimal geometry that has no sharp bends or kinks. This results in the highest possible strength to weight and stiffness to weight ratios.

45 degree fiber bias

Our current winding pattern employs a +45/-45 degree winding bias which results in our rims and wheels having very high lateral stiffness (side to side), but lower than average radial stiffness (up and down). This results in wheels built with our filament wound rims being very stiff and responsive to acceleration, while enhancing road holding and lowering the occurrence of tire pinch flats or rim damage due to impact.


We are the only manufacturer in the world that offers filament wound rims. Thus, besides the performance and cost benefits that our technology offers, you also get a product that is distinct from every generic carbon fiber rim that is available in the market.

Key Benefits of CTL over Traditional Manual Layup

Perfect finish quality

The layup is perfectly formed outside of the rim thus there is no possibility of presence of bubbles or wrinkles that can occur when carbon fiber is laid up inside the mold, as is the case with other manual layup rims

One piece layup

Because CTL layup consistes of single pieces of UD fabric there are no overlaps, no misalignment and no breaks or cuts in the carbon fiber. The benefits of this are decreased weight and increased strength of the rims

Better uniformity

CTL utilizes a custom made tool set to lay up the carbon fiber layers outside of the rim mold, around a solid mandrel. This allows us to lay up the entire rim in one piece, without needing to cut the carbon fiber into individual patches.


CTL process results in unique looking carbon rims as there are no visible joints or segments. In fact they appear to be painted except for the fact that the UD carbon fiber surface is clearly visible.

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