Although revision 3 of the TWC's may look quite different than before, it very much follows the design of R2 with the main difference being that instead of bending the teeth down 90*, I have bent a fence of teeth and welded them to the bottom of a footplate. I did this because the large radius required to bend the teeth of R2 was causing them to deflect quite a bit. Enough that I was not comfortable with it. This design is much more rigid - which may or may not be a better thing.

Adjustability and the strap configuration is the same as on R2 except that I changed the angle of the rear strap tab by 10*. This gives the strap a higher position on the back of the heel which in turn keeps it from working itself down the shoe or boot. It also allows the middle strap to conform better to the angle of the top of the front foot.

Once again, I modified the tooth geometry a bit to allow for better stress distribution. Since there is no bend to deflect, the teeth pass the stress analysis tests quite easily. The position of the tooth points are the same as before.

Description: Titanium 6Al-4V is cut with a waterjet to create the footplate and tooth fence. The fence is then placed in a CNC hydraulic brake press to form the front and back bends Once fitted, the fence and footplate are tig welded together from below leaving the top (or visible area) smooth. The final operation is to be media blasted to remove scaling and discoloration from the welding.

To adjust the width of the crampon, the nuts under the crampon must be loosened. This will allow the two pieces of the crampon to be pushed closer together or pulled further apart. Once it is fit to your specific shoe, the nuts are tightened and the crampon is locked in place. The straps work like any other crampon. They must be loosened, slid over your shoe and then tightened by pulling on the loose ends until snug.

Weight: 5.51 oz (158 grams) per pair.

Notes: I still want to bring these to market, but once again, I am going to need some time to test them before they are available in the product section.