Editing Openai/68fceef0-7248-8013-bf5d-581461dec5bc (section)

=== Assistant: Here’s a tight checklist for the calculator/design: ===
Here’s a tight checklist for the calculator/design:
* Ramp angle (θ) and component weight vectors (parallel/normal).
* Static vs kinetic friction; surface μ; rolling resistance; bearing losses.
* Pinion–rack spec: module/DP, pressure angle, face width, backlash, quality.
* Gear type choice (straight spur rack, helical rack, anti-backdrive options).
* Pinion diameter (torque ↔ linear force tradeoff); rack support/stiffness.
* Drum diameter and multi-wrap effects (effective radius change per layer).
* Cable/cord properties (stretch, creep, bend radius, efficiency).
* Available motive force (winch/motor/human) and transmission efficiency chain.
* Counterweight magnitude and path geometry (helps/hurts at each angle).
* Start (breakaway) force vs run force; stiction margins.
* Inertia (drum, pinion, moving mass) and transient acceleration.
* Expected speed profile; proof it won’t “stall/slow” without intentional braking.
* Intentional braking/hold: ratchet, brake, or regenerative load options.
* Alignment, misalignment tolerance, and spring tensioners on idler pinions.
* Structural limits (tooth stress, drum shell stress, shafts, keys, fasteners).
* Safety factors, end-stop loads, and runaway/rollback scenarios.
* Thermal buildup under continuous duty.
* Calibration inputs/outputs (force at rack, torque at pinion, line pull, power).