• Thumbnail for Contact patch
    The contact patch is the portion of a vehicle's tire that is in actual contact with the road surface. It is commonly used in the discussion of pneumatic...
    4 KB (552 words) - 19:57, 21 December 2024
  • Thumbnail for Contact dermatitis
    activated by sunlight. Diagnosis of allergic contact dermatitis can often be supported by patch testing. Contact dermatitis constitutes 95% of all occupational...
    25 KB (2,856 words) - 16:36, 23 May 2025
  • asperities to penetrate the oxide layer, forming metal-to-metal contact patches. If a contact patch is sufficiently small, with dimensions comparable or smaller...
    18 KB (1,860 words) - 15:43, 13 May 2025
  • tractions in the contact patch. In 1967, Joost Jacques Kalker published his milestone PhD thesis on the linear theory for rolling contact. This theory is...
    31 KB (5,008 words) - 13:17, 4 October 2024
  • Thumbnail for Tire
    rough features on the surface. Tires provide a footprint, called a contact patch, designed to match the vehicle's weight and the bearing on the surface...
    107 KB (12,425 words) - 17:50, 26 May 2025
  • Thumbnail for Aquaplaning
    clearing water. Tire tread aspect ratio: The longer and thinner the contact patch, the less likely a tire will aquaplane. tires that present the greatest...
    21 KB (2,978 words) - 22:23, 23 May 2025
  • Thumbnail for Allergic contact dermatitis
    Allergy, Asthma, and Immunology, "patch testing is the gold standard for contact allergen identification". The patch test consists of applying small quantities...
    22 KB (2,697 words) - 16:54, 26 November 2024
  • Thumbnail for Bicycle and motorcycle dynamics
    more lean is required. This balances the roll torque about the wheel contact patches generated by centrifugal force due to the turn with that of the gravitational...
    128 KB (16,098 words) - 05:19, 26 May 2025
  • Thumbnail for Camber angle
    applying negative camber, which turns the contact surface of the tire outwards to match, maximizing the contact patch area. Note that this is only true for...
    10 KB (1,316 words) - 06:13, 2 April 2025
  • Thumbnail for Slip angle
    cornering force, which is in the plane of the contact patch and perpendicular to the intersection of the contact patch and the midplane of the wheel. This cornering...
    6 KB (777 words) - 06:47, 13 September 2024
  • Thumbnail for Rolling contact fatigue
    small contact patch that leads to very high contact pressure between the rail and wheel. Over time, the repeated passing of wheels with high contact pressures...
    6 KB (1,496 words) - 04:05, 25 May 2025
  • interfaces is analogous to the concept of electrical contact resistance, also known as ECR, involving contact patch restricted transport of phonons rather than...
    11 KB (1,317 words) - 21:59, 23 May 2025
  • Thumbnail for Caster angle
    it intersects the road surface slightly ahead of the center of the contact patch of the tire on the pavement by a distance called trail. The purpose...
    7 KB (857 words) - 18:26, 8 August 2024
  • Thumbnail for Tire tread
    dry weather use will be designed with minimal pattern to increase the contact patch. Tires with a smooth tread (i.e., having no tread pattern) are known...
    5 KB (594 words) - 10:57, 25 May 2025
  • Thumbnail for Caster
    with more ground contact area. However, when rotating a wide swivel caster in-place, the center part of the wheel-to-ground contact patch rotates slower...
    14 KB (2,056 words) - 03:50, 14 January 2025
  • Thumbnail for Car suspension
    the vehicle by the road or ground are transmitted through the tires' contact patches. The suspension also protects the vehicle itself and any cargo or luggage...
    60 KB (8,081 words) - 06:23, 30 April 2025
  • Thumbnail for Cornering force
    Slip angle describes the deformation of the tire contact patch, and this deflection of the contact patch deforms the tire in a fashion akin to a spring...
    3 KB (377 words) - 10:27, 8 February 2024
  • Look up patch in Wiktionary, the free dictionary. Patch, patches, The Patch, or the patch may refer to: Patch Johnson, a fictional character from Days...
    3 KB (335 words) - 16:05, 19 May 2025
  • Thumbnail for Patch test
    planted. The chemicals included in the patch test kit are the offenders in approximately 85–90 percent of contact allergic eczema and include chemicals...
    11 KB (1,318 words) - 11:45, 25 February 2025
  • distance in front view between the king pin axis and the center of the contact patch of the wheel, where both would theoretically touch the road. It can...
    6 KB (843 words) - 16:30, 18 September 2024
  • Thumbnail for Racing slick
    grooves cut into the tread, such tyres provide the largest possible contact patch to the road, and maximize dry traction for any given tyre dimension...
    12 KB (1,402 words) - 14:27, 21 April 2025
  • Thumbnail for Lowsider
    steering) are transmitted by friction in the contact patches. There is a limited amount of force each contact patch can transmit before the tire begins to slide...
    5 KB (622 words) - 23:13, 30 December 2024
  • Thumbnail for NuVinci continuously variable transmission
    perpendicular to the contact patch plane. It is caused by the relative difference in surface speeds of both elements across the contact patch and is a major...
    17 KB (1,869 words) - 21:03, 8 November 2024
  • Thumbnail for Adhesion railway
    between the wheels and rails occurs in the wheel–rail interface or contact patch. The traction force, the braking forces and the centering forces all...
    26 KB (3,506 words) - 15:26, 4 September 2024
  • occur at the contact patch through friction and normal forces. There is a limited amount of force tangential to the road that the contact patch can transmit...
    5 KB (745 words) - 14:47, 5 April 2025
  • Thumbnail for Pneumatic trail
    center of the contact patch. Pneumatic trail is caused by the progressive build-up of lateral force along the length of the contact patch, such that lateral...
    3 KB (265 words) - 21:10, 12 January 2024
  • Thumbnail for Tapered roller bearing
    creates a linear contact patch which permits greater loads to be carried than with spherical (ball) bearings, which have point contact. The geometry means...
    6 KB (807 words) - 01:39, 12 January 2025
  • Thumbnail for Train wheel
    Procedures. CRC Press. ISBN 978-0-203-84812-8. "Book: The Contact Patch". the-contact-patch.com. Retrieved 29 October 2020. Richard Feynman (1983). Feynman:...
    10 KB (993 words) - 04:03, 25 May 2025
  • {\displaystyle r_{e}} is the effective radius from the hub to the center of the contact patch, and v x {\displaystyle v_{x}} is the forward facing component of the...
    4 KB (507 words) - 21:18, 29 May 2025
  • Thumbnail for Weight transfer
    suspension vertical travel and also due to deformation of the tires i.e. contact patch displacement relative to wheel. Lowering the CoM towards the ground...
    11 KB (1,414 words) - 13:54, 21 August 2024