11-27-2016, 06:56 PM
2/2 - Sunday, November 27
Here's a close-up of one of the "internal" catenary tensioners. This shows pretty well how the anti-dropping mechanism works. When the line is in tension, the entire force-amplifying pulley is sticking out to the right, here. The tension on the line pulls it horizontally, the tension from the counterweight is pulling down. If the line breaks, the counterweight pulls the whole thing down - and the outer diameter (with all the teeth) drop into that "V" shaped wedge at the bottom, preventing it from rotating any further (and free falling).
Golden hour comes pretty early now. Northfield.
Northfield.
Fairway Road Hydro Corridor.
Embedded track going in on Ottawa.
Here's a close-up of one of the "internal" catenary tensioners. This shows pretty well how the anti-dropping mechanism works. When the line is in tension, the entire force-amplifying pulley is sticking out to the right, here. The tension on the line pulls it horizontally, the tension from the counterweight is pulling down. If the line breaks, the counterweight pulls the whole thing down - and the outer diameter (with all the teeth) drop into that "V" shaped wedge at the bottom, preventing it from rotating any further (and free falling).
Golden hour comes pretty early now. Northfield.
Northfield.
Fairway Road Hydro Corridor.
Embedded track going in on Ottawa.