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Topic Date User

Is anodising slipperier than bare alloy 4-Dec-2012 At 12:14:31 AM Jim Titt

Message

On 3/12/2012 ironcheff wrote:
>Teeth are tougher than chalk but is anodising slipperier than bare alloy.
>
>I’m wondering if a brand new tube belay device like an ATC, complete with
>its glossy new anodised finish has less friction than the same device after
>it’s had enough use to the point where the anodised finish has worn off
>the surfaces that make contact with the rope.
>
>Give us your gut feel though if you know of measured test results that
>would be better.

We can´t measure any difference in the friction of nylon on anodised aluminium, polished aluminium and polished stainless steel and a review of the literature available agrees with this.
You can certainly measure the difference between a brand new dry treated rope and an old wall rope though!