Portion of a vehicle not supported by its suspension system
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In this simplified diagram the wheels, tires, and suspension are all part of the vehicle's unsprung weight, with only its one-piece chassis/body constituting its sprung weight
The unsprung mass (colloquially unsprung weight) of a vehicle is the mass of the suspension, wheels or tracks (as applicable), and other components directly connected to them. This contrasts with the sprung mass (or weight) supported by the suspension, which includes the body and other components within or attached to it. Components of the unsprung mass include the wheel axles, wheel bearings, wheel hubs, tires, and a portion of the weight of driveshafts, springs, shock absorbers, and suspension links. Brakes that are mounted inboard (i.e. as on the drive shaft, and not part of the wheel or its hub) are part of a vehicle's sprung mass.
The unsprungmass (colloquially unsprung weight) of a vehicle is the mass of the suspension, wheels or tracks (as applicable), and other components directly...
sprung mass to unsprungmass ratio can also be deleterious to vehicle control.[citation needed] Unsprungmass "Sprung mass and Unsprungmass". ZigWheels...
Protean Electric and Lotus found that most negative effects of added unsprungmass could be eliminated by adding suspension damping, and that the ability...
suspension with their knees, making their mass be sprung mass, but all of the mass of the bicycles remains unsprungmass. At the other extreme are full suspension...
springs, carried by the unsprung weight, carried by the tires, carried by the road. Unsprung weight is more properly regarded as a mass which has its own inherent...
placement of the gearbox is unsuitable for a live axle (due to excessive unsprungmass), the rear suspension is either independent, or uses a de Dion tube...
and drive bogie-mounted gearboxes via cardan shafts; this reduces the unsprungmass and hence track wear at high speeds. The locomotive also features an...
wheels for motorsports. Lighter wheels can improve handling by reducing unsprungmass, allowing suspension to follow the terrain more closely and thus improve...
motors are integrated into the wheels. One disadvantage is that the unsprungmass increases and suspension responsiveness decreases, which impacts ride...
are purely due to mass and its distribution. These include: Center of mass Moment of inertia Roll moment Sprung massUnsprungmass Weight distribution...
aluminium) was attached to the rear axle which meant it was part of the unsprungmass of the suspension. The clutch and gearbox were placed at odd locations...
the spring and damper inboard increases the total mass of the suspension, but reduces the unsprungmass, and also allows the designer to make the suspension...
vehicle. They provided the rear-engined sports car with a reduction in unsprungmass, using a strong and lightweight alloy wheel. Despite still being in...
placing motors inside wheels, given that AFM's low mass does not excessively increase a vehicle's unsprungmass. YASA is targeting motors that deliver 220 kw...
suspension, semi-automatic transmission and inboard disc brakes to reduce unsprungmass. The Ro 80 still stands today as a milestone in automotive design. It...
in-hub motor was expected to weigh 70 lb (32 kg), which increases the unsprungmass, but Lordstown CEO Burns was confident the suspension and software being...
accelerometer to measure the relative motion of the sprung mass, corrected (sometimes) for the unsprungmass. Examples of these are the early ARAN systems (Canada)...
The MDX rides lower, which reduces its center of gravity. To reduce unsprungmass, the front suspension lower control arms are made from forged aluminum...
aluminium alloy disc hubs. The two-piece disc construction reduces unsprungmass and also reduces the transmission of heat generated by the brakes to...
effect of the added unsprungmass by using slightly more suspension damping. What's more, they found that when that unsprungmass came from actual motors...
of 9° without the provision of tilt equipment, and that the maximum unsprungmass could not exceed 1.8 tonnes. Furthermore, BR stated its readiness to...
equalizers and how the value of an unbalanced moving mass compares to the unsprungmass and total mass of the locomotive. The way the tender is attached...
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