1 / 12

Alignment Fundamentals, Part Two

Alignment Fundamentals, Part Two. Steering Axis Inclination (SAI). The inward tilt at the top of the strut. (looking from the front). SAI and Included angle. Include angle = SAI + pos. camber. SAI and Bump steer. Zero SAI would = Major bump steer. 0 Bump Steer.

rehan
Download Presentation

Alignment Fundamentals, Part Two

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Alignment Fundamentals, Part Two

  2. Steering Axis Inclination (SAI) • The inward tilt at the top of the strut. • (looking from the front)

  3. SAI and Included angle • Include angle = • SAI + pos. camber

  4. SAI and Bump steer Zero SAI would = Major bump steer

  5. 0 Bump Steer • SAI line meets tire vertical CL at road surface • Tire wear reduced • Steering effort decreased • Less stress on components

  6. SAI Safety Factors • Unequal causes serious handling problems • Torque steer • Pulling during braking • Bump steer • If SAI is out of spec • Camber will be out of spec • Bent or damaged components

  7. Scrub Radius • Distance between SAI line & True Vertical CL of tire at road • Positive scrub radius – SAI line meets road inside CL of tire • Negative Scrub Radius – SAI line meets road outside CL of tire

  8. Pos. Scrub Radius

  9. Negative Scrub Radius Commonly used on front wheel drive vehicles

  10. Toe • The distance between the inside front edges and the inside rear edges of the tires • Wears tires with a feathered edge • Toe-out-on-turns – inside wheel at sharper angle that outside

  11. Toe In & Out

  12. Turning Radius & Toe-Out-On-Turns

More Related