Impeller Only

The Impeller is an option for the ActiveSpeed. The impeller design was optimised using Computational Fluid Dynamics software and its drag matches the alternatives that are available. However all impellers create significant drag so we recommend that it is only used for training and is removed for racing. Every effort has been made to make our impeller as practical as possible: it can easily be fitted and removed using 3M Command Adhesive Strips, the spinner is supported at both ends to ensure it is robust, and it has a clip on ‘keeper’ to prevent wear while in transit.