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In response to the various enquiries about the aluminium rings on the treeMOTION, I hope the following will provide the necessary answers.
The green anodised aluminium ring on treeMOTION is made by DMM in North Wales and is of the same specification as the rings here:
http://www.dmmindustrial.com/productsDetails.asp?id=6&id2=41&id3=343
and in the range of Teufelberger rope tools here:
http://www.teufelberger.com/en/products/treecare/tools.html
You can see that each product carries a CE mark which normally refers to both a dynamic and static rating. As a minimum, the green rings have passed independent assessment by two Notified Bodies (SGS in the UK and TUV in Austria) covering a number of EN Standards either as a stand alone item or as part of an assembly - EN813, EN566, EN795B, EN354 etc. A static strength of 30kN is quoted.
Until the most recent batches of treeMOTION, the bridge rings have been unmarked. The reason for this is that the ring is part of a certified assembly and therefore carries the same certification as the harness. If we were to include a ring marked to its‘ full spec (EN795B and 30kN), it might give the impression that these are the ratings for the harness, which would be wrong! The most recent treeMOTION rings are now marked with DMM, Teufelberger, treeMOTION and CE0120 (the number of the Notified Bodied).
Norm has stated that unmarked rings will not be accepted at the Illinois TCC. In an attempt to ensure that treeMOTION climbers will be able to use their harnesses, DMM will ship some of the latest spec rings to Norm for the TCC. Can I ask that that the rings are returned to Norm after they have been used at the TCC, so that (if necessary) they can be sent on to the next TCC.
So, just to summarise! The green rings on treeMOTION are made by DMM at their own facilities in North Wales. A brief spec is on the DMM web site. All DMM rings of this spec are CE marked to EN795B and 30kN. If Teufelberger incorporate a DMM green ring into a product, it passes through a sceond phase of independent assessment. treeMOTION rings are additionally CE marked under the harness certification. Norm will have a goodie bag at the Illinois comp.
Chris
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thats a well deserved boo-ya