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Wobble, shimmy, tank-slapper,[1]speed wobble, and even death wobble are all words and phrases used to describe a quick (4–10 Hz) oscillation of primarily just the steerable wheel(s) of a vehicle. Initially, the rest of the vehicle remains mostly unaffected, until translated into a vehicle yaw oscillation of increasing amplitude producing loss of control. Vehicles that can experience this oscillation include motorcycles and bicycles, skateboards, and, in theory, any vehicle with a single steering pivot point and a sufficient amount of freedom of the steered wheel, including that which exists on some light aircraft with tricycle gear where instability can occur at speeds of less than 80 km/h (50 mph); this does not include most automobiles. The initial instability occurs mostly at high speed and is similar to that experienced by shopping cart wheels and aircraft landing gear.[2][3]
^Hough, David L. (2000). "Glossary". Proficient Motorcycling: The Ultimate Guide to Riding Well (2nd ed.). USA: BowTie Press. p. 253. ISBN 1-889540-53-6. tank slapper: a speed wobble so severe that the handlebars bang alternately against the sides of the fuel tank
^Wilson, David Gordon; Jim Papadopoulos (2004). Bicycling Science (Third ed.). The MIT Press. pp. 263–390. ISBN 0-262-73154-1.
^Cossalter, Vittore (2006). Motorcycle Dynamics (Second ed.). Lulu.com. pp. 241–342. ISBN 978-1-4303-0861-4.
Wobble, shimmy, tank-slapper, speedwobble, and even death wobble are all words and phrases used to describe a quick (4–10 Hz) oscillation of primarily...
a dragster. Dangerous steering wobble may occur at high speeds, riding with no hands on the handle bars at lower speeds, and when the front forks are weighted...
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its ill handling, frame flexing and the supposed tendency to speedwobble exiting high speed turns, the H2 was tied for the fastest lap time with the Kawasaki...
decrease, the frequency actually increases with speed. Wobble, shimmy, tank-slapper, speedwobble, and death wobble are all words and phrases used to describe...
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a steering damper is beneficial. This prevents low speedwobble which may occur in the lower speed range of about 13 to 20 mph (21 to 32 km/h). In older...
shimmy, occurs naturally at certain speeds, and is similar to speedwobble that occurs in other wheeled vehicles. The speed at which caster flutter occurs...
whereas the RSV Mille is not. The reason for this is to avoid potential speedwobble under full acceleration due to the motocross style handlebars atop high...
1993, when the bike gained a larger-diameter fork to minimize high-speedwobbling and drift, four-piston brake calipers, and other handling and safety...
flat setup in terms of top speed. Worst of all at high speeds, skates with a full rocker setup can experience a speedwobble, where they oscillate uncontrollably...
reduce the oscillations of the trucks on the board commonly described as speedwobble. The springs are there to return the deck to center after a turn has...
at the '1x' speed. The frequencies are appropriately higher for faster writing speeds. CD-R and CD-RW discs use a frequency modulated wobble of 140.6 kHz...
skill in order to avoid falling.[citation needed] In rocker boards and wobble boards, the fulcrum is attached to the board. In rocker-roller boards and...
driven on-rail. Frictional contact mechanics Rail adhesion Rail profile Speedwobble Vehicle dynamics Wheelset For general methods dealing with this class...
28–35 in (710–890 mm), and are very stiff to improve control at speed. "Speedwobbles" pose a problem for beginner downhill riders but intermediate and...
completion of the course when his Vincent motorcycle developed a steering wobble known as a tank slapper, throwing the rider into a tree. Since then, motorcycles...
movement, then there is the possibility of speedwobble resonances at certain cadences ("pedaling speeds") and trailer loads (both total mass and load...
that include zinc or copper, or weights that are altogether lead-free. Speedwobble Rotordynamics Baruh, Haim (2014). Applied Dynamics. Hoboken: CRC Press...
V-Brake as used on many bicycles. The Dirtsurfer will never experience a speedwobble normally associated with other bikes or board sports. The Dirtsurfer...
(typically a cylindrical roller bearing), causing the cycloidal disc to wobble in a circle. The cycloidal disc will independently rotate around the bearing...
both Walker and Weishaar, which sent Weishaar's motorcycle into a high-speedwobble. The motorcycle went into a skid; Weishaar fought to save it, but before...
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