For those unfamiliar with the Venturi effect, it’s a scientific phenomenon whereby liquid flowing in a pipe speeds up as it travels through a tighter space. That explains why Orro chose the name Venturi for a bike designed to go fast, and with this latest incarnation the Sussex-based brand has aimed to maintain the best elements of previous versions while introducing subtle upgrades.
This top-of-the-range Signature Plus model uses the same frameset as the Venturi STC, except it comes with a fancy paintjob in a choice of three glittering colours –