EXTENSION SPRING Design - Stresses and Initial Tension in Just Over 10 Minutes

[@cogitateandabet]

okay, this is surreal! such lucid explanation under 11 minutes! but is this your natural way of speaking? I found your way of speaking a bit different...apart from that, superb!

[@LessBoringLectures]

Thanks! Close, although the editing changes it a bit.

[@RBruceVogelaar]

at around minute 3:12, the 'twist' direction you show I find to not be the correct direction for 'twisting'. (Or maybe I misinterpreted your diagram.) If you twist the feed wire the other direction, you get a large pre-compression in the final spring. Thanks! Very hard to find other places which show how to accomplish this.

[@m_ja1n]

is there a way to find out r1 and r2? i have spring of 0.9mm wire dia, 12mm outer dia and 50mm length inside the hook, spring rate of 0.1265N/mm and Wahls correction factor of 1.116. Thanks!

[@snehapatil5415]

love you brother

[@kaushikiyer9445]

Great video. What software are you using for writing?

[@LessBoringLectures]

Thanks! This one was recorded using Whiteboard. I'm now using the iPad's Notes app

[@kaushikiyer9445]

@@LessBoringLectures oh great

[@novide3418]

I don't understand from where is R2 measured. I did exercise 10-36 of shigleys 9th Ed. And I don't understand why it is 1/4 in instead of 1/2 in. Can you take a look?

[@raghavendrapalekar6739]

Please calculate the spring with unknow of initial tension please calculat the initial tension first