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It may not be as pretty as a ZZZZZZZZZZ : ), but it is just as effective. Works on a doubled rope. Mid line attachable. Much less sitback than a ZZ, and adjustable to boot!

Here is a short video demonstrating the adjustable grip OAR, which also tends slack very nicely with the KMIII rope. http://www.youtube.com/watch?v=MXT0gKdmthk

It does indeed work SRT. In fact with the fatter, denser rope such as the Yale XTC pictured, you do not really need an adjustable anchor point at all. It will release SRT with this rope by pulling all the way down on the bottom arm and then reaching up with a finger and pulling partly down on...

I have not done any break tests with this one. I did some drop testing with an earlier version with good result, under substantial shock load it will allow some slippage. The links which make up the spine are ANSI rated at over 14,000 lbs. The clips will come off with the help of a pair of...

Yes, I am quite stoked about this. It self tails beautifully DdRT with a smaller dia. rope (KMIII) and yet the arms clamp upwards with any application of the climbers weigh due to the outboard anchor point. Plus it tends slack by pulling upwards with the tail also, if desired.

The OAR now has an adjustable attach point which allows for fine tuning of the grip of the OAR by tightening or loosening the brass thumb nut.

I have been working on this OAR (Offset Ascending Rack). It slips on the line mid-line by swiveling the link pins up, wrapping the rope around the pins, and through the swing arms. A neat feature of this swivel link spine, is that the OAR will tend slack in the normal manner. The top attach...