What is Pro Mod? Pro Modified Cars are 200 km/h starters, powered by gasoline or methanol. They are the fastest working door trailers; only Rail Dragster and Fun Car are faster. Pro Mods are purpose-built race cars cloaked in streetcar parodies from the 1930s to the present day. allowed to run nitrogen-assisted engines running on unleaded racing fuel or turbochargers or superchargers running on methanol. The complete car including the driver must weigh up to 2350 lbs for cars with nitrogen engines or 2650 lbs for supercharged or turbocharged engines. Nitrogen or blower engines cost around £60,000 from an accredited engine builder. The connecting rods last up to 20 runs on a blown car and up to 50 runs in a nitrogen car. Valve springs are consumables and individual pistons and washers need to be changed frequently. A blown-up car will change spark plugs every time they run if they want to · read ‘plugs or every 2 or 3 runs if they don’t. A Pro Mod car will make about 2600-3200 hp and the fastest will run the fastest in the 5s zone.1 – Chassis Each chassis is custom built from 4130 chrome moly tubes to strict rules. The maximum allowable wheelbase is 115 ″ (2.92m). Chassis features include chassis twin rails, strut front suspension, carbon or aluminum interior trim, aluminum engine mount plates, coil rear suspension and 4-link axles. The bare chassis weighs only 200-350lbs (90-159kg). Today’s cars are using more lightweight materials like carbon fiber and titanium. 2 – The Body Pro Mod body shell is a heavily modified copy of the original bodywork built with composite materials. Bodyworks can have roof trim, minced, lengthened at the wheelbases, scaled down from the stock, or otherwise modified to provide better aerodynamics and fit the giant rear tyres. giant. The maximum front overhang is 45 inches (114cm.) A rear wing is added to provide downforce at the top end of the track. Central driving position is not allowed. On this particular car, the rear bodywork is supported by a carbon fiber backbone and the entire bodywork can be disassembled. 3 – Suspension Car is required to run with dampers and springs in each corner of the car. Twin or triple adjustable coils on commonly used shock absorbers as well as electronic control of the shock absorbers.4 – Engine The cubic capacity of nitrogen engines is unrestricted and can go up to more than 900 cubic inches. using carburetor or EFI and multistage nitrogen system to make power. The maximum allowed supercharger combination is 527 cubic inches, and a 14/71 root-type supercharger that runs no more than 20% faster than crank speed must be used. The turbo charged engine can run up to 540 cubic inches with up to two 91mm turbos. In addition, the blow inlets are restricted to a maximum valve size of 1.9 inch discharge and 2.4′ inlet and are restricted to 20% overload when using the 14-71 high torsion blower. Nitrogen engines are manufactured in the region of 3 hp per cubic inch and blown engines 5.31 hp per cubic inch, so differences in engine size, car minimum weight, etc. designed to adjust this balance so that both combinations are competitive. Pro Mod vehicles can use either a multi-disc clutch or a variable torque transmission (which uses a disc brake to start. Some vehicles with a clutchless transmission use a planetary design like such as: Lenco or B&J or in the case of some automotive nitrous twin shaft designs such as Liberty or G. Some cars are also now using automatic transmissions based on Turbo 400 or Powerglide transmissions. Nitrogen cars usually use 4 or 5 speed gearboxes and blowing cars must use 3 speed gearbox.Cars are allowed to have a maximum rear-wheel drive ratio of 4.56: 1.6 – Wheels & Tires The rear wheels are 16 inches in diameter and 16 inches wide and must be of the ‘Beadlock’ type, which means there is a clamp to hold the tire and stop it. either spin on the wheel or they have to run the inside of the tire. rear tires from 5 psi and front tires up to 35 psi The rear tires are designed to ‘pinch’ to aid in starting and will ‘grow’ about 4 inches in height during the burn and at the end of the track. ., cars that run on compressed air and to pressurize using methanol. Nitrogen car fuel systems can flow up to 8.5 gallons per minute and blown car fuel systems can flow over 15 gallons per minute. In a car that blows up methanol, each run will use up to 25 liters including the combustion. In a lead-free racing car, nitrogen fuel is used and each run uses approximately 5 liters as well as 6 lbs of nitrous oxide.8 – Brakes The vehicle is equipped with aftermarket disc brakes on all four wheels with those Newer vehicles use carbon fiber discs and pads. The braking system is used in conjunction with dual parachutes to reduce vehicle speed from speeds up to 250 km/h. Braking is generally single at the front and 4-pot at the rear with a system designed to distribute the rear through the rear and large wheels. car. The data is used to make fine clutch adjustments, which are essential to keep the car going fast. Other sensors monitor exhaust gas temperature from each cylinder, cylinder head temperature, fuel flow, throttle position and rear suspension travel.
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