1964 Harley-Davidson Sportster XLH "McClanahan" Dragster

• VIN: 4A4264H3
• ENGINE: Stock V-Twin
• CARBURETOR: S & S Super B
• TANK: “Custom Engines” “Belly Burner”
• REAR FENDER: “McClanahan”
• RACING TAGS: 14, The Drag Racers Association Member - Midwest Owners & Drivers Association, Alton Dragway Class Trophy Winner

This 1964 Harley-David­son Sportster XLH “McClanahan” Dragster sports a stock V-twin engine with the number 4A4264H3 and an S & S Super B carburetor. The tank displays “Custom Engines,” the business of Carl McClanahan. The tank also displays the phrase “Belly Burner,” a nickname given to low-slung, stretched chassis drag bikes that placed the rider in a nearly prone position over the engine. On the rear fender is painted “McClanahan,” and racing tags show the number 14 as well as Drag Racers Association Member and Midwest Owners & Drivers Association. A sticker displays “Alton Dragway Class Trophy Winner.”

In the 1960s, Harley-David­son motor­cycles were a prominent force in drag racing. These bikes, often modified Sportsters, gained popularity for their powerful engines and competitive performance. The motor­cycles were known for their single-engine, carbureted setups and, in the Top Fuel class, the use of nitromethane, which provided significantly more power than gasoline. Some riders pushed the boundaries of speed and performance with innovative modifications. Racers often lightened their motor­cycles, incorporating features like lightweight aluminum rims, modified transmissions, and custom tires.

The Harley-David­son brand dominated the Top Fuel and "no-bar" drag racing classes. In the 1960s, the Top Fuel motor­cycle class was a relatively new and evolving category, though other brands also saw experimentation with nitromethane fuel. The "no-bar" style, where bikes raced without wheelie bars—safety devices designed by Carl McClanahan that prevented the motor­cycle from lifting too high—was a popular style of drag racing with roots tracing back to Harley-Davidson’s early days. In the late 1960s, riders like Joe Smith and Gordon Kately achieved significant success with modified Sportsters, including multiple wins at the NHRA U.S. Nationals.

Carl McClanahan, a prominent drag racer, author, and inventor, started drag racing in 1958 on a 1951 74-inch Harley-David­son Panhead. Since then, he has collected record after record, trophy after trophy, and first place after first place. His bikes excelled because of the skills, techniques, and tricks he’s learned over years of tinkering. He reports that he built the first set of motor­cycle wheelie bars. He also built what may have been the first twin-engine Sportster using a pair of 66-inch engines in line, falling off during four of the first seven outings on the contraption before disassembling it. His genius inspired a generation with his book, V-Twin Thunder! A Handbook of Inexpensive Performance Modifications for Harley-David­son Motor­cycles.

Among the records he has set and held are:

1963: Alton, IL. 11.75 seconds, 123.288 mph on a 66-inch Sportster with a lay-down frame. This bike ran 11.55, 125 mph later in 1963.
1969: Alton, IL. AHRA world record A/fuel: 9.57 on an 89-inch Sportster in a Yetman frame. This bike later ran consistent 9.30s to 9.40s.
1970: Gainesville, FL. Low qualifier Spring Nationals, at 9.44 seconds.
1970:Invited to Indy Nationals, top fuel.
1972: Assumption, IL. Set IHRA record for B/fuel on a 55-inch Sportster.
1972: Bowling Green, KY. Ran 10.75, 130.62 mph. Old record was 10.96.
1972: Alton, IL. Ran 10.47, 10.34, 10.33, 10.31, and 10.32 at 138 mph.
1973: Pevely, MO. Ran 6.18, 119 mph in ⅛-mile race to win AHRA B/fuel record on a 53-inch Sportster.
1974: Pevely, MO. Won AHRA A/fuel record on a 108-inch (!) Sportster.

Harley-David­son, Inc. needs no introduction as an iconic Amer­ican Motor­cycle manufacturer headquartered in Milwaukee, Wisconsin. In 1901, William S. Harley, Arthur David­son, and brother Walter David­son began work on their first Motor­cycle engine. Their first attempt may have been a failure, but they founded Harley-David­son in 1903 and became one of the largest Motor­cycle manufacturers by 1920. They produced Motor­cycles for the United States used in both World War I & II and were one of only two major Motor­cycle manufacturers to survive the Great Depression. In fact, they’ve survived numerous changes to ownership and restructuring, intense global competition, charges of restrictive practices, claims of stock price manipulation, and a constantly evolving view of the company and bikers. Still, they are widely known for their loyal following and now manufacture in Penn­syl­vania, Wisconsin, Brazil, and Thailand. Their classic cruiser style, including high handlebars, low seats, and chrome parts, is easily recognizable. They’re also noted for their customizability, giving rise to the chopper style of Motor­cycle, and for the distinct sound of HD’s powerful engines.