Tag Archives: traction

The Pit Shimizu tyres arrived today.  I had to order them from Hong King and they took a week or so to arrive. These are  PS-0300 according to the label and have 15° Shore hardness. This is a bit harder than the PN racing set that came the other day although they feel much the same. I quickly put them onto the test rig to see what kind of grip they had. I was impressed. When clean, they have a coefficient of friction of about 0.9 and should be extremely good on the mouse – better than the softer PN racing tyres. They seem a little less sticky and so should be a bit less prone to picking up dust from the maze. I shall try them on the mouse in the morning

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