Grigri rope tab modifications: intro and warning

Modifying or removing the rope tab on a GG219/GG+ is an extreme measure used to improve rope feed on lead. If done right it can make for extremely easy and efficient rope feed. It drastically reduces the friction of the rope going through the GG by straightening out the rope path. With the stock GG the rope path takes an “S” bend which is the source of the friction. The rope friction can be reduced by using a smaller diameter rope. However it will never be as nice as a GG with a removed or modified rope tab.

When the rope tab is removed it will require additional steps to prevent back-feeding on the live rope since it pulls through the GG easier. There are lots of techniques and widgets/gizmos for managing this, but that is beyond the scope of this blog post.

WARNING: There are dangerous and significant downsides of removing or modifying the rope tab

 

1). It is tricky to do and should only be done by a competent person/a machine shop. It’s possible to ruin the GG in the process and if there are sharp edges it can increase rope wear and/or cut the rope. I have always done the mods myself as I feel competent in making changes. However, I would think that a machine shop could easily mill off the tab and do an excellent job of it. 

2). If the rope tab is completely removed, you run the risk of the rope getting caught behind the tab (especially with smaller diameter ropes) and the back of the cam arm acting like a knife. IMO, this should NEVER be done…UNLESS there is some form of mitigation (see main outline of GG modifications). My recommendation is not to cut the rope tab unless you're willing to make a further modification to protect the rope from getting from getting pulled under the cam arm. (see outline for possible ways to prevent this.

3). When there is an inverted fall, with a stock rope tab, the rope path and extra friction is more likely to cause the GG to pivot 90 deg when/if the tension on the chest harness connection goes weightless. This causes the GG to pivot to an USD position which can help is lockup in headfirst falls. This ability is removed or lessened when the tab is removed. This is another reason why it is SO important for there to be a reliable backup and/or trigger for the Grigri - especially a modified GG.

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