Versions Compared

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

...

...

...

...

Objective

  • Research how a double wishbone suspension does it’s thing and how it can attach to frame

  • How would susp hardpoints change if we’re looking into external susp instead of internal?

  • How do we make the front of chassis around those hardpoints?

Considerations

  • Figure out how a double wishbone suspension works

  • Find out what makes up a suspension

    • bell crank tab, shock mounting tab, toe-rod, etc.

  • Look into “multilevel” frame arc - see notes over suspension conversation from today.

  • Design considerations for frame to accommodate front suspension geometry

  • Look at the old susp design, and what we could change about that so the new sys is the best it could be.

  • What loads are gonna be at these hardpoints, and how do we create geometry (cross brace) to counteract?

By the end of 10/19/2024, have the following done:

  • Project goals

  • Background research

  • Notes from discussion with suspension

  • Any design criteria and other considerations

  • Any sources used

  • Any visuals used

Double Wishbone Suspension - How does it work?

To first understand DWS, it’s important to understand camber.

What’s camber?

Angle of tire regarding vertical of car.

...

  • For a wider stance and greater stability

Moving onto double wishbone

...

Utilizes two V-shaped “wishbones” which connect to the frame at the holes. Upright attaches to the wheel.

These are cool because they allow each suspension to act independently - if there is a bump on the road that affected only the front right wheel, it’s suspension system is the only one that would react. (Race Car Design by Derek Seward - 3.1: Introduction to Racing Car Suspensions)

Multilevel Frame Architecture

...

Note how new front frame is hexagonal rather than rectangular.

...

Important note: External vs Internal suspension system hardpoints are the EXACT same.

Taking a look at the Old Suspension and Frame Systems

Observations (suspension)

...