Motorcycle land-speed record

The first generally recognized motorcycle speed records were set unofficially by Glenn Curtiss, using aircraft engines of his own manufacture, first in 1903, when he achieved {{convert|64|mph|abbr=on}} at Yonkers, New York using a V-twin, and then on January 24, 1907, on Ormond Beach, Florida, when he achieved {{convert|136.27|mph|abbr=on}} using a V8 housed in a spindly tube chassis with direct shaft drive to the rear wheel.{{harvtxt|Harvey|2005}} p. 253 An attempted return run was foiled when his drive shaft came loose at speed, yet he was able to wrestle the machine to a stop without injury. Curtiss's V8 motorcycle is currently in the Transportation collection of the Smithsonian Institution.

Curtiss's 1907 record was the fastest any person had ever travelled under power: the rail record stood at {{convert|210.2|km/h|mph|0|abbr=on}} (electric powered in Germany); the motor car record was {{convert|127.66|mph|abbr=on}} (steam powered); while in the air, where weight considerations made the internal combustion engine dominant, the air speed record was still held by the Wright Brothers at a mere {{convert|37.85|mph|abbr=on}}.

File:William A. 'Bill' Johnson, USA, Motorcycle land-speed record, 1962-09-09, Bonneville Salt Flats, on 'Dudek Triumph Streamliner'.jpg

The first officially sanctioned Fédération Internationale de Motocyclisme (FIM) record was set in 1920, when Gene Walker rode an Indian on Daytona Beach at {{convert|104.12|mph|abbr=on}}. The first FIM-sanctioned record to exceed Curtiss's 1907 speed did not occur until 1930, at Arpajon in France, when an OEC special with a 1,000cc supercharged JAP V-twin engine averaged {{convert|137|mph|abbr=on}} over the required two-way runs. The 1930s saw an international battle between the BMWs ridden by Ernst Henne and various JAP-powered British motorcycles, with the penultimate pre-World War II record being taken in 1937 by Italy's Gilera, shortly before BMW set a final pre-war record of {{convert|173.68|mph|abbr=on}} that stood for 14 years.

After World War II, the German NSU factory battled Britain's Vincent HRD and Triumph for top speed honors during the 1950s, with British-engined machines dominating the 1960s. New Zealand's Burt Munro (of the film The World's Fastest Indian), set a speed record at Bonneville in 1967 of {{convert|183|mph|abbr=on}} for a motorcycle with an engine under 1000cc. A record which still stands. The record stands as at 2024.{{citation needed|reason=Seems dubious since this page says 184.83 mph had been achieved by a 998cc bike in 1955|date=October 2022}}

A Japanese-engined streamliner motorcycle first took the record in 1970, and alternated with Harley-Davidson-engined machines as record-holders until 1990, when Dave Campos's streamliner powered by twin Harley-Davidson engines averaged {{convert|322.15|mph|abbr=on}}. That record stood for 16 years before being surpassed in 2006 by the Ack Attack team's twin Suzuki engined machine at an average of {{convert|342.8|mph|abbr=on}}. The BUB team, using a custom-built V4 engine, then alternated as record holders with Ack Attack over the next four years. As of November 2022, the Ack Attack team has held the motorcycle land speed record at {{convert|376.36|mph|abbr=on}} since late 2010.

The fastest record certified by the FIM is that set in 1964 by the jet-propelled tricycle, Spirit of America. It set three absolute land speed records, the last at {{convert|526.277|mph}}. While such records are usually validated by the Fédération Internationale de l'Automobile, the FIA only certifies vehicles with at least four wheels, while the FIM certifies two- and three-wheelers. Breedlove never intended Spirit of America to be classified as a motorcycle, despite its tricycle layout, and only approached the FIM after being rejected for record status by the FIA. Spirit of America{{'}}s FIM-ratified record prompted the FIA to add the new category of thrust-powered vehicles to its world record listings. Furthermore, most people think of the tricycle Spirit of America, now part of the permanent collection of Chicago's Griffin Museum of Science and Industry, as a car and not a motorcycle."LandSpeed" Louise Ann Noeth, Bonneville Salt Flats, MBI Publishing

Link to Bonneville Motorcycle Speed Trials AMA National and FIM World Records

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a. {{Note label|A|a|none}} At the time, it had been the accepted practice that the FIM would require the American Automobile Association to carry out official timing for any run in the USA. However shortly before the record attempt the A.A.A. had withdrawn from controlling motor sport, leaving no official body representing the FIM. Although every effort had been made to show the impartiality of the officials and the accuracy of the equipment, after several months the claimed record was not accepted by the FIA as the timing was "not carried out by an official certified by the FIM.".{{cite journal|date=13 December 1956|title=More delaying action|journal=The Motor Cycle|publisher=Iliffe & Sons|location=London|volume=97|issue=2800|page=788}}

b. {{Note label|B|b|none}} The issues with official FIM timing of runs in the US were still not resolved at this time. NSU had solved the problem for their runs in August by including accredited timekeepers and officials in the team that they bought over with them from Europe. The British Motor Corporation had also been attempting record runs that year, and the FIA arranged for a British timekeeper to go to America for these. The equipment he had used for timing the runs was tested and approved by the FIA. However he had to leave America before Allen could make his run, and so the same equipment was used by two Americans who had been given written authority to act as timekeepers on behalf of the FIM. At the FIM meeting in Paris in October, the FIM postponed approval of the record, alleging that the timekeeper was not recognised by the FIM and that no official FIM observer had been present. After further deliberation and investigation, the FIM announced in April 1957 that they were unable to ratify the record claimed as the equipment used had not been approved by them.{{cite journal|date=11 October 1956|title=Bombshell in Paris|journal=The Motor Cycle|publisher=Iliffe & sons|location=London|volume=97|issue=2791}}{{cite journal|date=25 April 1957|title=Sorry story|journal=The Motor Cycle|publisher=Iliffe & sons|location=London|volume=98|issue=2819}}

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;Literature

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• List of fastest production motorcycles

• [http://bonnevillespeedtrials.com/ Bonneville Speed Trials]
• [https://web.archive.org/web/20190722081543/https://www.speedtrialsbybub.com/ BUB Motorcycle Speed Trials archive], predecessor to Bonneville Motorcycle Speed Trials
• [http://www.uklandspeedracingassociation.co.uk The UK Land Speed Racing Association] {{Webarchive|url=https://web.archive.org/web/20201124125146/http://uklandspeedracingassociation.co.uk/ |date=24 November 2020 }}

{{Extreme motion}}

{{Motorcycles}}

{{DEFAULTSORT:Motorcycle Land Speed Record}}

Land speed record

Motorcycle