[Nmcaver] [Texascavers] Powered Ascender

[dirtdoc at comcast.net]

MAD was built by Nevin Davis, Nittany Grotto, using (I believe) a McCullough chain saw engine.  And yes, he did use it at Golondrinas.  In addition to climbing the rope, it was just dandy for pulling the rope out of the pit.

Nevin also built some of the early, successful, fluorscent  helmet-mounted caving lights that reproduced the unfocused light of a carbide.  I still have one someplace, but the bulb is broken.

Dirtdoc