Front View: Closed	Rear View: Closed
Front View: Open for Rigging	Rear View: Open for Rigging

Technical Details

I acquired my CMI Lanyard Ascender from Jonathan M. White in 2021.

The CMI Lanyard Ascender is 170 mm. tall, 78 mm. wide, 29 mm. thick, and weighs 260 g.

This left-handed ascender is a variation of the early CMI Large UltrAscender, Version B with the dark cam and pin cam axle secured with an external retaining ring. The frame differs by the absence of an upper attachment hole and the use of a slotted lower hole that can accept webbing in place of two round holes.

The rope channel is 18 mm. wide. The cam pin is centered 54 mm. from the inside of the rope channel. The cam radius increases from 41 to 57 mm. over an angle of 42°, giving a 25° cam angle. The tooth pattern is (4.3)^5, with the lower row of four teeth of the normal UltrAscender cam being ground down, rendering them nonfunctional but still visible.

My ascender has a sewn lanyard attached to the ascender with a Miller double-acting spring hook at the other end. The lanyard is sewn from 25 mm. tubular webbing and is 690 mm. long. A short piece of flat webbing lines the inside of the lanyard loops. The body of the lanyard has an internal webbing piece sewn so that the outer surface is loose, carrying no load.

There are no markings on this ascender other than a sticker saying "TESTED." The lanyard has a sewn warning label in Spanish, folded and stitched so that it cannot be read without removing the stitching. The hook has "H" and "5M, an anvil icon, and "%" forged on one side and "98 K 3" forged on the other. The hook closure is stamped "MILLER" on one side. The safety is stamped "WARNING: WHEN IN USE KEEPER MUST CLOSE AND LOCK" on one side and "INSPECT BEFORE EACH USE" on the other.

Comments

This ascender is meant to be used as an industrial safety rather than as part of a climbing system. An upper attachment point is not needed in that environment, and the lower slot is better adapted to sewn webbing than two round holes would be.