Building the Gravity Assist Mechanical Simulator

Gate assembly                         Gate assembly

In the photo, notice a third L-bracket has been placed (held by yellow tape) to limit the downward travel of the gate, so that the thin end of the gate holds the BB just above the BB's center (any lower, and the gate would have to work past the BB on its way up, resulting in a backward kick to the BB, instead of a smooth release).

Also, the "Keeper" L-bracket, near the bottom of the image, has had a corner cut off. This ensures that the gate returns down into the correct position after operating.

In the photo, notice, on the acrylic disk, that the paper-clamp's handle is about to contact the gate's trip arm and release the BB.