Originally Posted by
BCRider
Nix on the pulley. It doesn't replicate the issue at all. Pulleys are used to change the direction of the pull and it won't lock the beam and upper rope into a locked system. For example a rope lifting the weight and passing around a pulley produces the same tension in the rope on both sides of the pulley.
And before you shout "EUREKA! ! "
it's not applicable to our spokes. Last I saw our wheels don't have pulleys on the spokes....
Ah.. but the hole in the hub acts as a cam...
Actually, I'm looking at the rope-and-beam picture again and I don't see it modeling spokes on a wheel. There's three anchor points: rope-to-wall, beam-to-wall and rope-to-beam. I don't see the analogous three points on a spoke. It only has two ends.
I think it would more closely resemble a wheel if we hang the beam vertically, then hang the rope and bucket from the end of the beam. Then push on joint where the rope attaches to the beam sideways to simulate the rotation of the hub.