what about these…
http://bicycleslut.wordpress.com/2010/01/10/diy-studded-bicycle-ice-tyres/
http://www.instructables.com/id/Pop-Rivet-Ice-Tires-for-Your-Road-Bike/
http://www.icebike.org/Equipment/tires.htm
Comments
You only need to stud the front tire to keep upright; however, if you stud the back tire as well, it’s even better. One caveat is that these tires are only suitable for winter conditions. The difference between one studded front and no studded tires in phenomenal. When the bike is travelling straight the studs shouldn’t be hitting the road too hard; otherwise, they will just wear out too soon. Don’t worry, when the tire slips just a bit the studs will bite in. You rarely notice the slight side to side movement.
You don’t need to stud the middle knobs since you only need the added traction when you are turning. The studs should touch the road enough to allow sufficient braking. The studs in the middle knobs wear out very fast and soon become useless anyway.
Stainless steel screws will last much longer, but also cost about 3 times as much. You can change screws as they wear out, your tire can survive several sets of studs.