Here's a technique that I use if I need to abseil / rappel with only 1 locking carabiner and a Munter Hitch (check out other videos on how to tie one). If you are able to tie a prusik on the brake rope as a 'third hand', that would be safer.
This technique should be used as a last resort as it will wear down your rope faster.
This demo is for information purposes and not an instructional video. Abseiling / Rappelling can be dangerous if done incorrectly so do so at your own risk!
