In reply to Martin Hore:
> It's very useful information, although it's interesting that you didn't get the same response as I did, by email, from Black Diamond re their harnesses. You got "5 years from first use or ten years from manufacture" whichever comes first. I just got "10 years from manufacture".
The main difference may be when you got the information, that document was compiled nearly a year ago. The information that I used was the information supplied by the manufacturers with their equipment or what was published on their websites at the time and discounted any verbal (or emailed) information that I was given as that is much harder to prove as accurate.
5 years from first use or ten years from manufacture. Simply means that they are stating that they expect a particular harness will last 5 years with 'normal' use from when you first use it. Now defining what 'normal' use is tricky, that is why most manufacturers point out that you can damage something on first use and that regular inspection of the equipment occur before each use, by someone who knows what they are looking for. Recreationally this comes down to your own decision making, but when you are providing equipment for club members or commercially then there are additional things to worry about.
I disagree that it is a mess, as the manufacturers are required to give their equipment a lifespan, so, on the whole, will be conservative. For three reasons, being held accountable in court (very unlikely), sale of new models (its not as if they can do an Apple and slow down the equipment, when the latest model is launched) and most importantly given the pretty small production runs / size of the companies, there isn't the data set of evident to support extending the lifespans. Most of the articles looking at testing 'old' equipment often are only testing one or at best two items, which is hardly scientific or even definitive proof. But it does provide interesting discussion points.
Over the 20 plus years I have been climbing, one thing that hasn't changed is that climbers on the whole pretty tight when it comes to spending money on harnesses and ropes, but yet spend thousands on travelling to the crag and on clothing! If you use a harness for 20 times a year for 5 years, that harness has cost you in the region of 40-75p per time, that is not much.
On the whole, I personally get around 100 - 150 days of use out of a harness before it is looking truly knackered, but then given what I do, I do give them a very hard time. Interesting one of the paddlesport manufacturers give their buoyancy aids stated maximum lifespan in the number of days of use.
Post edited at 13:45