Mechanical advantage and machine efficiency
Calculate spring force with Hooke's law F = k·Δx, the spring constant from geometry k = G·d⁴/(8·D³·Na), elastic potential…
Calculate vehicle speed from engine RPM, transmission gear ratio, differential gear ratio and tire diameter. Find wheel RPM…
Calculate pump shaft (brake) power and hydraulic (water) power from flow rate, head, fluid density and efficiency. Supports…
Calculate boat propeller pitch from engine RPM, gear ratio, boat speed and propeller slip — or work backwards to find boat…
Calculate the spring rate, torque, maximum bending stress and loaded diameter of a helical torsion spring from wire diameter,…
Calculate the available net positive suction head (NPSHa) of your pumping system and check the cavitation margin against…
Calculate aircraft wing loading (W_L = W / S) and wing cube loading (W_CL = W / S^1.5) from weight and wing area. Supports…
Calculate the spindle speed (RPM) and feed rate for drilling, reaming, boring, counterboring, milling and turning. Enter…
Calculate the carburetor CFM your engine needs using CFM = (CID × RPM × E) / 3456. Enter engine displacement, maximum RPM…
Calculate the Brake Mean Effective Pressure (BMEP) of an engine using BMEP = 2πnT / D, or convert BMEP back to torque. Supports…
Find the ideal fulcrum (pivot) point on a lever for Class I, II and III levers. Enter the lever length, load force and effort…
Calculate the minimum diameter of a solid or hollow shaft for torque, bending, combined and fluctuating (ASME) loads, or…
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