Quick answer: Stick-slip and breakaway resistance become more visible when the mechanism pauses frequently. Measure restart behavior separately from continuous force.
Why is slow manual motion harder to tune than a continuous bench sweep?
A smooth constant-speed trace can miss the force needed after a dwell. Guides, seals and contact points may stick, then release. Raising spring force can hide the symptom while increasing return impact. Define the intended stop-and-start motion and compare breakaway with running resistance.
A practical verification method
Pause at representative positions, restart in both directions and record force peaks and any jump in movement.
| Item | What to record | Purpose |
|---|---|---|
| Reference configuration | Part or assembly identity and drawing revision | Make comparisons traceable |
| Test conditions | Relevant position, direction and operating condition | Compare the same characteristic |
| Decision evidence | Pause at representative positions, restart in both directions and record force peaks and any jump in movement. | Resolve the specific question before approval |
Use the result in an engineering request
Describe the observed condition and the required function separately. Include the relevant drawing revision and your results from the check above. If an acceptance limit has not been established, identify it as an open design input rather than treating a successful trial as approval.
Review the related Leading Spring product information. For a project-specific review, send the mechanism description, available geometry and the evidence relevant to this decision through the contact page.
Editorial note: AI-assisted engineering guidance, prepared from the topic-specific reasoning shown here and the company’s public product context. Illustrations explain decisions; they are not customer-case photographs or test results. Product-specific suitability requires review against your approved requirements.