Delivering both speed and cadence for under £65, the Topeak gets off to a good start. But once you begin installation, you quickly fall out of love.
The wireless cadence sensor is neat enough and a simple zip tie affair, but that’s as good as it gets. A wired speed sensor really belongs on a bargain basement model and the python-thick cable is a genuine monstrosity. The worse was to come, though, with a ridiculous, oversized and over engineered head-unit mount, which could only be bar mounted.
If you’ve got aerobars, forget it. The concept of tool-free fitting has also passed Topeak by. When you consider what most manufacturers accomplish with zip ties or rubber bands, why Topeak have gone down this design route is beyond us. Even more galling, the actual head unit was excellent with a simple one-button operation, great performance and clear display.