Lat Pulldown Machine

Manufacturer load specs

Mechanical model Needs measurements

F_handle(θ) = W · R(θ) · η^n with R(θ) = Δs_stack / Δs_handle measured at start / mid / end

1 input(s) sourced · 2 to measure on site

To measure: R(θ) (Overall ratio (pulleys × cam × lever) at start/mid/end) · n, η (Pulleys and their efficiency)

gym80 publishes no ratios, cam profiles or dimension drawings (product sheet and 2025 instructions for use checked); the spare-parts brochure lists fixed pulley diameters, but fixed pulley diameters do not change the ratio.

Derivation & sources Measurement protocol (French)

Measured / estimated resistance points

Guides about this machine

Lat pulldown weight by brand: stacks, increments and what the pin meansHow to convert machine weight between gyms and brandsPlate-loaded vs selectorized machines: why the numbers differ

Same movement at other brands

One machine per brand for this movement. Open one to see its own specs and sources.

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