Chaps
It is very difficult to get honest feedback on products, so on one side, I read your comments and see them in a positive light, even though on first reaction the feeling is otherwise! I would like to comment on a few of the points made here on behalf of Treemagineers Ltd. and the harness manufacturer Teufelberger Ges.m.b.H.
A number of my comments will centre on the language used and whether it has been correctly applied. I want to do this because I think it is important to concentrate on facts, and so that treeMOTION is represented in a fair light. I hope that no-one will feel picked upon, I just want to respond directly to the points made. In no way am I trying to distract from the issue(s) being discussed or make light of anything, but I am keen to put these comments into context and offer solutions. Please bear with me……
Hutch and Crazy Jimmy. You have said that the webbing was ‘tearing’ and had ‘started to rip’. Webbing used in Category 3 PPE products must be of the generic type called ‘System 3’. This generic construction is such that the failure of one fibre will not lead to the failure of subsequent fibres. Abrasion damage will lead to a loss of strength but it is not possible for System 3 webbing to rip or tear.
Jeremy9 - ‘found some wear’. When two components move across each other wear is, at some point, inevitable. The MOTION in treeMOTION comes from the wide range of movement extended to the user by the design. This is, in part, a function of the webbing constantly moving through the Front D hardware as the climber work positions. Any webbing loaded via hardware will always be subject to wear/abrasion. Abrasion will always be accelerated when the webbing runs across that surface, such as in the treeMOTION Front D hardware, in particular when the surface area is reduced as in the 25mm webbing used in treeMOTION. There is however a significant performance advantage in using that narrower textile element, which passes more efficiently through the hardware.
Hutch - ‘I'm sure the webbing is not as strong as it should be’. In order to gain CE Certification for Category 3 PPE, the product must pass through the independent assessment of an approved notifying body. In this case, TüV Vienna has overseen the construction principles, testing, product marking and user instructions for treeMOTION.
Returned harnesses with accelerated webbing abrasion have been subjected to the static strength tests of the relevant EN standards. All of these harnesses have passed those requests and subsequently an increased force for a short period before the load was removed. There is a robustness with treeMOTION, that is perhaps not initially apparent.
I would like to reassure you that the webbing is strong enough.
Treebing. Is the treeMOTION a 'lemon'? One thing is for sure, no harness will ever please everyone. Maybe this harness is a lemon for you, but perhaps not for the next person.
MTCInc and Treebing – ‘design flaw’. After 20 months experience, a very low percentage of harnesses have shown accelerated webbing abrasion. A design flaw would have shown up with problems in many more, if not all, harnesses. Whilst every design can be improved upon, the issue here is not that of a design flaw, but a result of difficulty in finishing the front hardware to specification. Minor amendments have been made to the tooling and the finishing process, so that we are confident that the hardware is consistently finished to specification.
Hutch, you asked about 'replacement parts'. In the next few weeks, the adjustable link in the upper webbing slot of the Front D hardware will be a replaceable part. Both leg loops will be replaceable too. In effect, because the bridge can also be renewed, the whole of the front of the harness will be end-user-replaceable.
From the beginning of the treeMOTION, we knew that webbing abrasion would need to be addressed. We have perhaps been guilty of taking too long to get these replacement parts through the certification process. Please accept our apologies for this.
At the same time, I would also ask that you recognise how much new ground has been covered in the development of treeMOTION and the philosophy behind it…..and that perhaps the path isn’t quite as simple as it might look from outside.
Chris