The other day I saw a car getting towed away. Since it had to be towed away my guess is that the problem isn’t torsion springs in the boot lid och backrest that is causing problems.
End designs for torsion springs can really vary depending on usage area, environmental demands etc. Remember that the further out that the arm is loaded the smaller force is available.
Germany is the largest spring market in Europe. The automotive industry is huge here and torsion springs are commonly used as important components. Below is a classic Volkswagen.
Image source: ridelust.com
I saw this little cute donkey with a carriage when I visited Cairo. No need for torsion springs in a boot lid of that little carriage. But maybe there are springs ins the backrest?
When manufacturing springs that’s supposed to be used as a circular movement cylindrical torsion springs with double coil is a good choice.
I read an article the other day about some entrepreneurs in Kingsville who have the ambition to create a new local industry based on “the next cool thing in personal transportation, the Qugo”. I must say the that it looks like some sort of segway but with two smaller rear wheels where torsion springs are used.
I wonder how good the torsion springs are in this motorcycle taxi? It looks to be in quite bad condition but you never know. Usually springs are used in seat belt locks but I can’t image this taxi to have that. Do you?