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How to Check for Frame Deformation?

1 Answers

Geoffrey

07/30/25 12:47am

Remove the frame and lay it flat. Stretch a steel wire through the centers of the front and rear crossbeams of the frame, then cross the wires between adjacent beams. The difference in distance from the two intersection points to the centerline should not exceed 3mm. Use a plumb line, straightedge, and square to check its straightness and verticality. Below are related introductions: 1. Definition of the frame: The frame, also known as the chassis, is the base of the vehicle. It generally consists of two longitudinal beams and several crossbeams, supported by the suspension system, front axle, and rear axle on the wheels. It must have sufficient strength and rigidity to withstand the vehicle's load and impacts transmitted from the wheels. 2. Judging the quality of the frame: To assess the design and structure of the frame, it is essential to first understand the various forces the frame must endure while the vehicle is in motion. If the frame lacks toughness in any aspect, even the best suspension system cannot achieve good handling performance.

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