Introduction to GriGri Modifications

It amazes me that the GG has received so much favor and attention as a possible candidate for a lead rope solo (LRS) device, when, in it's basic unmodified form it is mediocre at best. There are other devices that will feed, lock-up, and are more versatile than a Grigri. And, with less modification, can do everything the Grigri does in for LRS, and in addition can effectively be used for top rope soloing (TRS) and has fewer moving parts. See my posts on the Trango Vergo for LRS and TRS.

However, the Grigri has been available, updated, widely available, and used longer than any other device and has proven reliable, both as a belay device and as a LRS device. It is relatively simple (see photo below of a disassembled GG 2, which is basically the same as all Grigris), and with various mods, it can be a good LRS device (though as mentioned above it is deficient as a TRS device).

This index and linked posts will cover the HUR (Held Up Right) position of the Grigri. It should be noted that the GG can also be used in the USD (Upside Down) position without any modification whatsoever. However, that method can be super sensitive to rope size and have delayed high-clip lock-ups and/or short roping yourself when feeding or clipping pro. The USD position will not be discussed on my blog as there are plenty of materials out there and I also consider it inferior to the HUR. The main exception (and a big one), is that it will likely not catch a headfirst fall in the HUR postion. Thus a reliable backup and other mtigations are necessary. 

1. Grigri chest harness connections to hold in HUR position
2. Modifications to harness attachment to help GG pivot to an USD position for inverted falls
3. Spring modifications to allow easier lockup
4. Rop tab and other modifications that help promote smooth rope feed

The index has basically been organized according to that scheme

Return to GG Mod INDEX