BUB Seven Streamliner is an American-built
streamliner motorcycle that held the
motorcycle land-speed record
The motorcycle land-speed record is the fastest speed achieved by a motorcycle on land. It is standardized as the speed over a course of fixed length, averaged over two runs in opposite directions. AMA National Land Speed Records requires 2 passes ...
from 2006 to 2008 and again from 2009 to 2010.
[ BUB Seven and two other streamliners traded the title of "world's fastest motorcycle" during official speed runs at ]Bonneville Speedway
Bonneville Speedway (also known as the Bonneville Salt Flats Race Track) is an area of the Bonneville Salt Flats northeast of Wendover, Utah, that is marked out for motor sports. It is particularly noted as the venue for numerous land speed rec ...
in the summer of 2006.[ The other two competitors were ]Ack Attack
The TOP 1 Ack Attack is a specially constructed land-speed record streamliner motorcycle that, , has held the record for world's fastest motorcycle since recording a two-way average speed of on September 25, 2010 in the Cook Motorsports Top Sp ...
and the EZ-Hook streamliner.[ In 2017, Valerie Thompson rode BUB Seven for more record attempts at Bonneville.]
Design
Design for the streamliner is attributed to Motorcycle Hall of Fame
The AMA Motorcycle Hall of Fame Museum is an offshoot of the American Motorcyclist Association, recognizing individuals who have contributed to motorcycle sport, motorcycle construction, or motorcycling in general. It also displays motorcycles ...
inductee Denis Manning,[ Additional design work for the purpose-built V-4 engine was provided by Joe Harralson of Sierra Design Engineering.][ According to Harralson, the only off the shelf component in the engine is the ]oil filter
An oil filter is a filter designed to remove contaminants from engine oil, transmission oil, lubricating oil, or hydraulic oil. Their chief use is in internal-combustion engines for motor vehicles (both on- and off-road ), powered aircraft, ...
.[ Manning has stated that the aerodynamic shape was inspired by the ]Coho salmon
The coho salmon (''Oncorhynchus kisutch;'' Karuk: achvuun) is a species of anadromous fish in the salmon family and one of the five Pacific salmon species. Coho salmon are also known as silver salmon or "silvers". The scientific species n ...
, who he observed swimming in the Columbia River.[
Manning had previously built ]Cal Rayborn
Calvin Rayborn II ( – ) was a top American professional motorcycle road racer in the 1960s and early 1970s.
Born and raised in San Diego, California, Rayborn began riding motorcycles at an early age. He began his racing career in dirt tra ...
's 1970 world speed record motorcycle, using a similar streamlined fairing built from a surplus jet drop tank
In aviation, a drop tank (external tank, wing tank or belly tank) is used to describe auxiliary fuel tanks externally carried by aircraft. A drop tank is expendable and often capable of being jettisoned. External tanks are commonplace on modern ...
.[
]
Specifications
*Weight: [
*Length : ][
*Height: ][
*Width: ][
*]Coefficient of drag
In fluid dynamics, the drag coefficient (commonly denoted as: c_\mathrm, c_x or c_) is a dimensionless quantity that is used to quantify the drag or resistance of an object in a fluid environment, such as air or water. It is used in the drag equa ...
: 0.08[ or 0.09][
]
References
Further reading
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External links
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{{Forced induction motorcycles
Motorcycles of the United States
Land speed record motorcycles
Feet forwards motorcycles
Streamliner motorcycles