Gaz when we used to use full spikes you had to wear them in as when new they did not work to well ! But they used to last months ! We used to take them out on the concrete and give them some stick
You can see how they worked on my vintage videos in the northeast section both the cat and cougar 2 had them on indoors
I am thinking that the full spikes have a flat profile but the mini have a curved profile which in theory means the contact area is less ?
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Tim Snowdon
The Silver Arrow B4
The Black B44
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