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Unread 25-01-2017, 16:54
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Re: Gear Sliding down Ramp

Quote:
Originally Posted by Bob Steele View Post
If anyone actually does this for both FRP and the orange peel HDPE I would be interested in seeing what that number is.
Not those numbers, but we did measure the CoF of a gear with an actual FRC (2015) carpet yesterday (laying flat) using the well-known ramp method, finding it to be 0.43*. Static and dynamic were indistinguishable; once the gear started it moved at a slow steady rate down the ramp. As the gear weighs 18.4 oz per the game manual, expect to have a frictional force of about 8 oz.

* 39" long piece of plywood backing, hand raised, tape measure measurements, so you might want to put around a +/- 0.02 on it.
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