The Vault Regulars

Wednesday, January 13, 2010

Instep Crampons

As we all know the weather has been somewhat restrictive so i put the old brainbox to work on a solution to the ice dancing that we in particular have been doing.
Crampons are easy enough to come by but they are not what you want when out for a walk on the moors or similar terrains.
They are far too big, clumsy and can be quite expensive.
What i needed was a small pair of spikes that would fit in the instep of my boot and aid walking without sliding. I also wanted something light and would easily fit into a daypack.
So the task was to design and make a pair, that wouldn't cost the earth, could be made in a day and use bog standard DIY store materials. The only thing is a garage or workshop is required and obviously some decent tools.
Tools:-
On the tools front i used a hacksaw, flat file, small round file, 1.5mm drill bit, a 6mm drill bit, a power drill,a vice, a blowlamp, pliers and a hammer. I also already had a aerosol of silver car wheel spray so i used that as well.
Sizes:-
The material used is 55mm x 3mm thick plate purchased from a local store.
The length was cut to 130mm which includes the spike length, but this was to suit my boots, other boots would be different.
The spike length is 20mm.
The strapping retainers are just std washers made from aluminium.

The retaining straps are standard pieces and can be purchased from outdoor shops or DIY stores.
I am pleased the way they turned out and initial trials have proved they are effective.
They weight 340gr the pair including the straps. They are going to be made a little lighter as i am going to drill some more holes to the flat body of the crampon.

You just watch, it will thaw now and i probably will have to wait a while to test them in anger.
Anyway here are some photographs of the end result.








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