Battery-electric “Infinity Train” will charge itself using gravity
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2007–2026One slot for every year since HN launched. Height is that year's peak points; orange marks a 100+ point or 50+ comment breakout. Select a bar to open its strongest thread.
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HN comment orderhttps://en.wikipedia.org/wiki/Regenerative_braking#History Regenerative braking has been in extensive use on railways for many decades. The Baku-Tbilisi-Batumi railway (Transcaucasus Railway or Georgian railway) started utilizing regenerative braking in the early 1930s. This was especially effective on the steep and dangerous Surami Pass. In Scandinavia the Kiruna to Narvik electrified railway, known as Malmbanan on the Swedish side and Ofoten Line on the Norwegian, carries iron ore on the steeply-graded route…
A clearer title for this would be: Battery-electric "Infinity Train" will charge itself using potential energy. (Potential energy being stored in the position of the mined ore)
The first top-level comment from each of the four biggest threads, in HN’s own order. Excerpts are shortened; open a comment for full context.
- Breakout years
- 2
- Total points
- 125
- Total comments
- 111
100+ points or 50+ comments
reference only — not used in Hall rules or ranking
reference only — not used in Hall rules or ranking
Every submission
| Date | Title as submitted | By | Points | Comments |
|---|---|---|---|---|
| 2022-03-02 | Battery-electric “Infinity Train” will charge itself using gravity | clouddrover | 1 | 0 |
| 2023-07-31 | Battery-electric “Infinity Train” will charge itself using gravityFirst breakout · Best thread | jermaustin1 | 72 | 52 |
| 2025-06-22 | Battery-electric "Infinity Train" will charge itself using gravityLatest 20+ point return | croes | 52 | 59 |