Product DescriptionFrom 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.
FeaturesWhen 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 |
Reviews
| rhyang | Like these more than BD turbo express | | 
Voted 5/5 | These rack just as well as the BD Turbo Express, and have the same bite as the Grivel 360, which I love. The disadvantage is that they have a larger hanger than the 360, so you may have to clear more ice to put them in. Arguably the crank is easier to use. The hanger still accepts two biners. | | Posted Jan 23, 2007 6:17 am |
| GCutforth | Not Sold | | 
Voted 4/5 | 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. | | Posted Mar 31, 2008 10:23 pm |
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