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U-Haul Area field manager's vehicle. U-Haul/ROUSH CleanTECH From U-Haul:
"As the world’s largest retailer of propane, also known as liquefied petroleum gas (LPG), U-Haul has also teamed up with ROUSH CleanTech to promote the use of propane-powered vehicles by providing a network of propane-fueling locations throughout North America. According to a study by Pew Center on Global Climate Change, vehicles dedicated to LPG can reduce GHG emissions by almost 20 percent. The U-Haul alternative-fuel infrastructure includes more than 1,100 refill locations that are staffed by trained and certified propane-dispensing teams. U-Haul propane-fueling locations are fast and convenient. Whether refilling a BBQ grill, car, truck or bus, our customers can enjoy the speed and convenience of paying right at the pump."
Like the product jumping stilts is used to gain explosive power in jumping or running, I believe the same will be true for the bicycle.
Fig 1 The sprocket with the pedals are not shown, they would be stock. In red is the mounting point of the elongating spring or bungee cord. In green is the spring/cord. In purple is the crank attached to the rear wheel so the crank and wheel can spin at a faster speed than the hub temporarily. In this pic the spring is adding power to what you are applying to the pedals.
The bike will travel faster because there will be temporary burst of power from the spring, momentum from these burst will make the bike travel further in the same amount of time (faster).
Fig 2 This shows the spring being compressed although this will slightly slow the bike, momentum is traveling forward and the losses will be less then the gains of speed. What you lose in torque compressing the spring you gain it right back when the spring recoils including the speed of the spring recoiling, there would be a burst in torque in Fig 1 of the spring AND the foot pedals fully. Equal torque lost then gained (in Fig 1) netting no loss torque (Fig 1 and 2 combined), but speed is gained because the spring recoils faster than the foot pedals. Also inertia from the weight of the rider will help compress the spring.
Fig 3 is a top view of the rear tire crank and spring setup.
*Typical sizes could a 6" radius of the purple crank attached to the wheel or more. Spring weight could be calculated. If I were to guess - Math 1/2 riders power goes to the wheel 1/2 goes to the spring. Divide that by the gear ratio 4/1 or 4. Multiply that by 2 (6" crank) because the wheel would be 2x the size (1' radius) of the crank.
If it works for jumping stilts it should work here.
I think this tower used to be galvanized or painted, but it's been there for over 40 years and all the fires have burnt it all off, and it's rusty now. It's one of the main power lines from Hoover Dam to the L.A. area. Lytle Creek, CA. My apologies for the poor quality, I didn't realize my software was garbaging up my shots so badly. This will change forthwith.
Drax Power Station
Coal plants are the top source of carbon dioxide (CO2) emissions and the primary cause of global warming (sse: www.ucsusa.org/clean-energy/coal-and-other-fossil-fuels/c...).
Drax Power Station is a large coal-fired power station in North Yorkshire, England. It is one of the biggest and most efficiently run coal-fired power stations in the world, however, because of its large size, it's also the UK's single largest emitter of carbon dioxide.
It is undergoing a £700 million conversion from burning coal to to burn millions of tons of wood chips (or ‘biomass’ as it is officially known) per year instead. Most of these chips will come from trees felled in forests covering 4,600 square miles in the USA, from where they will be shipped 3,000 miles across the Atlantic to Britain.
Why you might ask? Because unlike coal, biomass is considered ‘sustainable’, and also any coal-fired power station that switches to ‘biomass’ gets the government's near-100 per cent ‘renewable subsidy’ that the owners of onshore wind farms get.
see:
www.dailymail.co.uk/news/article-2290444/Madness-How-pay-...
Cleveland Gladiators at Pittsburgh Power arena football (AFL) from the Consol Energy Center, Pittsburgh PA - Saturday, March 15, 2014
Members of our local camera club organized a trip to visit the Eagle River Dam Power House on the Wabigoon River west of Dryden, Ontario. The Power House was originally built in 1929. The "modern" power house we visited has a water turbine that has been running since 1938 and lots of the equipment is from the original installation.
This stark building in the middle of plowed earth is situated beside the A1 just south of the England/Scotland border. In the midst of the gentle English countryside it is visually shocking.
On the Serpentine trail at Soldier's Delight Park. It winds through the "Great Maryland Barrens" a savannah-like area that used to be much bigger and is now undergoing conservation efforts. The reason that Nick and i were in the area is beacuse there is a gravity hill near the park...and it actually works! (Well, actually, it's an optical illusion, but it's still cool.)
At John Wayne Airport in Irvine, California, large green and white signs indicate where users can plug in to AC power. I took photos of these because in many higher education classrooms it's not obvious where people can plug in a laptop. You can't afford to retrofit all your rooms with power to every seat or even every other seat, but you might be able to afford to put up signs that help the current situation.