klitscho. Bikes. July 27th , 2017.
The dwarf ordinary addressed some of these faults by reducing the front wheel diameter and setting the seat further back. This, in turn, required gearing—effected in a variety of ways—to efficiently use pedal power. Having to both pedal and steer via the front wheel remained a problem. Englishman J. K. Starley (nephew of James Starley), J. H. Lawson, and Shergold solved this problem by introducing the chain drive (originated by the unsuccessful "bicyclette" of Englishman Henry Lawson), connecting the frame-mounted cranks to the rear wheel.
great benefits of cycling. You`ll get there faster. Commute by bike in the UK`s major cities and you`ll get there in half the time of cars, research by Citroen shows. In fact, if you drive for an hour in Cardiff`s rush hour, you`ll spend over 30 minutes going absolutely nowhere and average just 7mph, compared to averaging around 12-15mph while cycling. And even in bike-friendly or less congested cities outside of the UK, you`ll still generally get around the city centres faster on a bike.
Save the planet. Twenty bicycles can be parked in the same space as one car. It takes around ﬁve percent of the materials and energy used to make a car to build a bike, and a bike produces zero pollution. Bikes are efﬁcient, too — you travel around three times as fast as walking for the same amount of energy and, taking into account the ‘fuel` you put in your ‘engine`, you do the equivalent of 2,924 miles to the gallon. You have your weight ratio to thank: you`re about six times heavier than your bike, but a car is 20 times heavier than you.
Burn more fat. Sports physiologists have found that the body`s metabolic rate — the efﬁciency with which it burns calories and fat — is not only raised during a ride, but for several hours afterwards. “Even after cycling for 30 minutes, you could be burning a higher amount of total calories for a few hours after you stop,” says sports physiologist Mark Simpson of Loughborough University. And as you get ﬁtter, the beneﬁts are more profound. One recent study showed that cyclists who incorporated fast intervals into their ride burned three-and-a-half times more body fat than those who cycled constantly but at a slower pace.
Avoid pollution. You`d think a city cyclist would suck up much more pollution than the drivers and passengers in the vehicles chucking out the noxious gases. Not so, according to a study carried out by Imperial College London. Researchers found that passengers in buses, taxis and cars inhaled substantially more pollution than cyclists and pedestrians. On average, taxi passengers were exposed to more than 100,000 ultraﬁne particles — which can settle in the lungs and damage cells — per cubic centimetre. Bus passengers sucked up just under 100,000 and people in cars inhaled about 40,000. Cyclists, meanwhile, were exposed to just 8,000 ultraﬁne particles per cubic centimetre. It`s thought that cyclists breathe in fewer fumes because we ride at the edge of the road and, unlike drivers, aren`t directly in the line of exhaust smoke.
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