Great concept, biner size a potential issue

By Jonathan Callahan Ranked #98 - Belay and Rappel Devices June 14, 2011

I love the original Smart belay device and had high hopes for the alpine version. Nevertheless, in order to accommodate two rope channels, Mammut had to make the width of this device a bit too wide for some locking biners. If you are belaying with a narrow-ish locker (i.e. Petzl AM'D), the belay device seems to get jammed in the curvature of the carabiner.
With an HMS locker like an Attache(wide pear shaped carbiners) this device fits fine. I imagine this is less of an issue on the smaller Alpine Smart(7.5mm to 9.5mm) but haven't gotten my hands on one to check. As long as you're not using a oval or D shaped locker, you should be fine.

View Details: Mammut Smart Alpine Belay Device - 8.9mm-10.5mm

Helpful Votes: 0 Yes