How deep are the screws themselves? I remember you posting about this quite a while back. I ran through about 1" of slush tonight and although I was able to keep upright, I wouldn't have minded a bit more bite.
The screw heads extend maybe 1/4" beyond the sole of the shoe. I probably should've added in my Why Run article that deep slush, depending on viscosity, can be difficult for all shoes, even screw shoes. Soupy slush is OK because it all squishes out of the way, but thick slush can often stay underfoot, even more than 1/4" of it. However, screw shoes are better than plain shoes because they give you a chance of touching pavement with the screw heads rather than "hydroplaning" on top.
So they're the shallowest hex nuts you can find — makes sense. I wonder if concentrating them around your footfall impact and push-off points, like heel edges and ball of your foot, might smooth the ride without sacrificing any real traction.
I've got an old pair of Nimbus VIIs — the pair I ran the '06 marathon in — that are a perfect screwshoe conversion project. I'm off to the hardware store!
Actually the screws are 1/2" long, but the heads are only 1/4" or so. You'll want enough thread for the screw to stay in the sole. Did you read my article on Why Run? The link there to Matt Carpenter's page is the perfect primer.
Comments
I've got an old pair of Nimbus VIIs — the pair I ran the '06 marathon in — that are a perfect screwshoe conversion project. I'm off to the hardware store!