Wahoo speed sensor mount for Cannondale Lefty 60 hub

The Wahoo speed sensor comes with a stretchy mount to attach to your hub. But it doesn't stretch enough to go onto a big hub, like the Cannondale Lefty 60 hub. Worse, the hub has a taper, so flat shapes won't sit level.

So I designed a part to be printed in ABS intended to hold the sensor on with a ziptie instead.