Friction brakes are outdated and everyone is starting to retrofit where they can. They have largely been confined to safety or holding brakes now and are being used less frequently with eddy current (mag) brakes becoming the norm in trims doing most of the braking.
The problem with using a fin...
I know it's a bit of a thread mine, but I was cleaning out my phone and I found this for you. Direction of travel is away from the camera.
They are two sets of spring loaded curved shaped jaws that have no clearance (so they will spring back and touch each other like in the photo if the rail...
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