Racecar Engineering

Long in the tooth?

Q l wonder if you’d like to comment on leading and trailing arms on Citroëns, Volkswagens, old Fords and others? When a leading or trailing arm that slopes down toward the rear hits a bump, the rearward component of the force exerted on the arm tends to pull the chassis down, cancelling some or all of the upward force. So big Citroëns, with their long arms, have an awesome ride, and Beetles are great on rough roads.

A friend had a ’48 Lincoln V12 coupe that had a great ride and cornered pretty flat without big anti-roll bars because of its high front and rear roll centres, and it just hit me, 70 years later, that that old, despised Ford suspension had long leading and trailing arms slanting down toward the rear.

Henry may have

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