amberwolf wrote:...running legs.
amberwolf wrote:I was disappointed when I looked around for pics and it apparently is only a non-moving head and tail end decoration. What it really needs is actual moving legs attached to the bike wheel so that it appears to actually be running as you ride.
Now I know one more thing I can add to the Junkyard Wolf idea if I ever get to doing that: running legs.
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The GÃƒÂ¼lcher Thermopile, being more convenient, less costly, and cleaner than primary batteries, was a popular means of charging storage batteries in the nineteenth century. It gave on a short circuit about 5 amperes of current at 4 volts. However, this thermo-electric generator hardly compared to the power output of the improved Clamond Thermopile of 1879, which produced 109 volts, with an internal resistance of 15.5 ohms. It could easily illuminate bright electric lights and also deliver a lethal dose of energy! In 1893, Dr. GiraudÃ¢â‚¬â„¢s Thermo-electric stove, 3 feet high and 20 inches in diameter and fired by coal, not only could charge batteries but could also light several electric lamps, as well as heat a room 21 feet square. It was an expensive unit to build but cost would have been no obstacle for a wealthy ruler of any ancient city like Alexandria. The ancient Greek kings ruling that city may well have relied on similar types of thermopiles to charge powerful lead-acid batteries hooked to the arc light on the Pharos lighthouse, an essential element for shipping safety and the cityÃ¢â‚¬â„¢s commercial survival.
The Improved Clamond Thermopile: 1879.
The EMF of this pile was no less than 109 Volts, with an internal resistance of 15.5 Ohms. The maximum power output was therefore 192 Watts, at 54 Volts and 3.5 Amps.
This pile was fired by coke. The hot junctions were at C, while the cold junctions D were cooled by sheet iron as in the original design above. What purpose was served by the tortuous path T-O-P taken by the hot gases is unclear, because there seem to have been no hot junctions in the inner sections.
This beast was 98 inches high and 39 inches in diameter.
It was a serious piece of machinery, quite capable of delivering a lethal voltage.
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