Helix Ice Screw
Product Description
From the Grivel North America website (defunct) :The symmetrical hanger and grip of the Helix allows the user to put in-line force on the tube to make the teeth bite into the ice easily on the first turn. Helix is built on the same polished tube as 360. The tube’s reverse profile threads eject ice outward and spread force over a greater surface area, these are hydrodynamic (radiused) to reduce friction. Helix racks conveniently (we’ve seen as many as six on a single ‘biner). The hanger does not articulate as much as 360 so it cannot be placed in the same odd locations but the Helix hanger does lift away from bulges so little surface ice must be cleared to facilitate placement. Helix offers a fantastic quality/cost ratio.
Features
When these first came out, they were available in lengths of 15 and 20cm, and the 15cm handles were yellow.Current models are available in lengths of 12, 16, and 20cm, with color-coded handles. See the Grivel Italy website.
Image from Grivel website
Images
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Reviews
Viewing: 1-2 of 2 |
GCutforth - Mar 31, 2008 10:23 pm - Voted 4/5
Not Sold
The 360 is so much versatile and efficient when placing than the Helix that I have found it hard to compare. My one Helix is typically used in the belay.
To this point I even prefer the BD Express to the Helix, but the differences are negligible. I find them a touch bulky although the grip you get when starting them is nice.
A great screw, just not as great as the 360.
To this point I even prefer the BD Express to the Helix, but the differences are negligible. I find them a touch bulky although the grip you get when starting them is nice.
A great screw, just not as great as the 360.
Viewing: 1-2 of 2 |
rhyang - Jan 23, 2007 6:17 am - Voted 5/5
Like these more than BD turbo express