Spur Gear Approximate Involute Curve

[@sinaaliyari9017]

Hi , what is (R approx involute curve radius)? I don’t get the formula of R ?

[@awajiokichejames5641]

thanks for the video, please how can i design for helical gear. thanks. i wish you can could make within this week.i need it for my project urgent. thanks so much.

[@quinnrafferty4635]

Brilliant