I took the pics at the Smithsonian Air and Space Museum in Washington DC one beautiful spring day.
Motorcycle, Curtiss V-8 | National Air and Space Museum Listed as between 30-40 HP @1800 rpm from 4 liters/244c.i.
Here's where to turn for detailed info:
Glenn H. Curtiss Aviation Museum - Aviation History / Naval Aviation / Early Aviation - Finger Lakes - Hammondsport, NY
Curtiss’s 1907 World Record V8 Motorcycle (136.4 mph) to answer your question. It was another 30 years before Joe Petrali came close-to but did not break Curtiss's record, in 1937.
Joe Petrali was one of the last great Class A racing stars who competed in board track racing, dirt track, speed records and hillclimbs. His record of 49 AMA national championship races lasted 55 years.
www.cycleworld.com
Petrali went to work for Howard Hughes after that record, and was the flight engineer in the amphibious airplane the Spruce Goose.
From another source:
It took another 23 years before it (Curtiss's 1907 record) was beaten in 1930 by Joseph Wright's OEC Temple JAP at 137.23 mph (220.99 km/h). Within weeks, BMW rested the crown with a run by Ernst Henne of 137.74 mph (221.67 km/h) and the combined forces of BMW saw Henne better the record every year until 1937.
Despite all you read about early car speed records, trains actually held the land speed record until 1907. That all changed when Glen Curtiss built and rode a V8 motorcycle to a land speed record of 136 mph. Within a decade he would become the Henry Ford of the aerospace industry, but his…
newatlas.com
Yes, the engine was designed and built by Curtiss for lighter-than-airships, and sold for that purpose. He decided that it would make a good motorcycle powerplant. Bear in-mind, this record was set a year
before Henry Ford began production of the Model T!
Current motorcycles in the western NYS Curtiss Museum:
Originals
1903 Curtiss Hercules
1908 Curtiss V-Twin (on loan from Charles & Martha Darling)
1909 Curtiss V-Twin (on loan from Charles & Martha Darling)
1910 Curtiss Single Cylinder with sidecar
1911 Indian (on loan from Vern Fasel)
1912 Curtiss Single Cylinder
1917 Henderson (on loan from Frank Westfall)
1922 Evans (on loan from Frank Westfall)
1924 Ner-A-Car (on loan from Charles & Martha Darling)
1925 Cleveland (on loan from William Dorman)
Reproductions
1907 Curtiss 8 Cylinder
More on the Curtiss V8:
Despite all you read about early car speed records, trains actually held the land speed record until 1907. That all changed when Glen Curtiss built and rode a V8 motorcycle to a land speed record of 136 mph. Within a decade he would become the Henry Ford of the aerospace industry, but his…
newatlas.com