![]() ![]() Here at Demon Tweeks we feature the best selection of racewear items anywhere in Europe with racewear to suit all disciplines and budgets. Regulations require the use of fireproof race suits, gloves and boots with the use of fireproof underwear strongly encouraged, too. Due to the advances in modern technology, todays racewear provides the very best protection for the driver and can often be the difference between a bruised ego and a very serious injury.Īccidents do happen in motorsport, so it makes sense to ensure that you have the very best level of protection that you can afford. Filling up the tank required flipping up the seat to access the fuel-filler cap.The safety of a driver in motorsport is paramount, which is why set standards have been put in place for drivers competing in all forms of motorsport around the world. The bike featured a dummy fuel tank without a fuel-filler cap in the normal motorcycle position, and stored fuel in a tank beneath the seat. Although the engine still fired in an uneven order, characteristic of a V-twin, the exhaust note differed from the more traditional models. It had a bigger engine, displacing 1130cc (68.95 cubic inches) producing 115.0 hp 8250 rpm and 64.9 lb-ft of torque at 6300 rpm. The VRSC v-rod's radical new design represented a rare departure from Harley-Davidson's tradition of making minor improvements when introducing new models. Based on the VR 1000 racing engine architecture and nicknamed the Revolution, the new mill featured a 60-degree vee, instead of the usual 45-degree angle found in the air-cooled pushrod-engine line. The company teamed up with Porsche Engineering to develop the first Harley-Davidson motorcycle with a liquid-cooled DOHC four-valve V-twin engine, dual overhead cams, and fuel injection, in the same bike. Knievel's Harley-Davidson XR-750 is currently on display at the Smithsonian's National Museum of American History. In 1975, he rode the bike while jumping 120 feet over 13 Greyhound buses and later in the same year he cleared 133 feet over 14 buses, setting a world record that remained for 25 years. The rarest XR-750 is the custom 1972 model, made of steel, aluminum, and fiberglass, used by the famed stuntman Evel Knievel. However, Harley-Davidson later changed the cylinder head material to aluminum and paired them with larger cylinder valves for better heat diffusion and more effective cooling. ![]() Often referred to as "waffle irons," the alloy heads degraded the XR-750's performance in long-distance events. Initially, the cast-iron cylinder heads made the engine susceptible to overheating. The bike is equipped with an air-cooled, 45-degree inclined V-twin 4-stroke OHV engine with the signature iron cylinder-and-head package. ![]() Harley-Davidson manufactured the XR-750, often referred to as The Beast, 750 Sporster, and Iron 750, from 1972 to 2008 (the replacement XG750R was introduced in 2016). All MT500s included a waterproof ABS rifle case mounted on the right rear and two 5-gallon Jerry cans in front for gas or water. The single-rider bike lacked a pillion for a second passenger but was fitted with a rack for gear bags or supplies. However, all could be disconnected for stealth missions. Designed specifically for military use, the MT500 met street legal requirements with a single rectangular headlight, turn signals, and a taillight. A chain-driven single overhead cam (SOHC) drives two intake valves and two exhaust valves per cylinder and uses a 5-speed gearbox shifted with the left foot. The Harley-Davidson MT500 (Military Transport 500cc) is a remake of the original Armstrong MT500, equipped with a unit construction-designed Rotax air-cooled, single-cylinder engine. In 1989, Harley-Davidson bought Armstrong-CCM primarily for the rights to the Rotax engine for use in its dirt-track racing bikes and later to offer a badge-engineered model to the U.S. Hagerty estimates the value of a 1903 Harley-Davidson Single to be about $775,000, while Royal Enfield puts the Serial Number One bike at $15 million. The company assembled the Serial Number One motorcycle without fenders to make the engine visible during competition and to demonstrate its power and reliability. Drivers often used the foot pedals to provide additional power. The bike weighed 185 lb. and reached a top speed of 40mph. The engine was mounted in a tubular loop frame and mated to a single-speed, belt-drive transmission. However, the pair soon discovered it lacked hill-climbing power. Harley and his boyhood friend, Arthur Davidson, for use in a regular pedal bicycle frame. The company fitted the bike with an inlet-over-exhaust single 24.74-cubic-inch (405.41cc) engine with 9-3/4-inch flywheels weighing 28 pounds, an upgrade from prototype models that used a 7.07-cubic-inch (116 cc) engine. The first models built from 1903 to 1905 were almost identical. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |