![]() Rich mixtures make the fuel very difficult to ignite, how rich mixtures that can be used is actually limited by the ignition system. This is also something that helps prevent detonation, something that is usually a problem when nitromethane is used as a SI engine fuel. This means that power output can be increased by using very rich air fuel mixtures. Nitromethane can also be used as a mono fuel with a partial burn. Compared to gasoline the laminar flame speed and combustion temperature is higher at 0.5 m/s and 2400Â☌. It has a high heat of vaporisation, 0.56 MJ/kg, and together with the high fuel flow this provides excellent cooling. This suggest a very high specific energy at stoichiometric, about 6.6 compared to about 2.9 for gasoline. Nitromethane has a stoichiometric air fuel ratio of about 1.7:1 and its energy content is about 11.2 MJ/kg. The fuel is limited to 85% nitromethane (CH3NO2), the rest is essentially methanol. The noise produced by one of these machines can cause deafness in extreme cases. 12,000 pounds ofDownforce generated by the rear wing at 325 mph. A top fueler's burnout alone can travel halfway down the track.Īt top engine speed, the exhaust gases escaping from the open headers produce about 800 pounds-force (3.6 kilonewtons) of downforce (although much more downforce is produced by the massive foil sitting over the rear wheels). First, after applying some water, it heats the tires up, and secondly, it removes foreign debris from the tires. They can exceed 280 mph (450 km/h) in just 660 feet (0.2 km).īefore their run, they do a burn-out. A Top Fuel dragster accelerates from 0 to 100 mph (160 km/h) in less than 0.8 second, subjecting the driver to a force about 5.7 times his weight, and almost 11 times quicker than it takes a production Porsche 911 Turbo to reach the same speed. Top Fuel dragsters are not the fastest linear accelerating vehicles in the world, as evidenced in the following link. ![]() These cars compete in a 1/4 mile (0.4 km) race and complete it in less than 4.5 seconds at upwards of 330 mph (530 km/h). ![]() Top fuel dragster time (4.567 sec at 321 mph or 516 km/h)
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