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World-renowned dragster chassis fabricator Murf McKinney Chooses TIG Inverters as Part of Best Manufacturing Practices
The TIG welded 4130 chrome-moly frame of a NHRA Top Fuel dragster weighs less than 300 lbs., yet it withstands almost incomprehensible forces. The supercharged, fuel-injected, nitromethane-burning engine produces an estimated 7,000 horsepower, rocketing the vehicle down a quarter-mile track in 4.4 seconds and at speeds up to 335 mph. The forces cause the 300-in.-long frame to bow up 10 to 12 inches, while the large rear wing on a dragster develops upwards of 8,000 pounds of downforce.
The allure of such power makes even non-racing fans aware of the sports legendary names: “Big Daddy” Don Garlits, Shirley Muldowney, Don “the Snake” Prudhomme, Larry Dixon and John Force.
When these legends purchase a dragster chassis and body or need an existing car refurbished, they turn to Murf McKinney. While not recognized by the general public, everyone in the dragster and funny car business knows McKinney, who captures more dragster chassis sales than any other fabricator. Top fuel chassis costs around $55,000, a funny car chassis costs $35,000 to $40,000 and the body for a funny car costs another $55,000.00.
|Â A chassis has dozens of welded tabs, which hold down a variety of parts. Notice that the weld bead is only as wide as it needs to be.|
|To obtain this stack of dimes appearance, welder/fabricator manually pulses the amperage with theÂ foot control.|
|In the hands of a skilled welderÂ advance squarewave output enables creating weld beads that look like they were made with a machine.|
Best Chrome-Moly Welding Practices at McKinney Corp.