Stud conversion any good ?

[Chip-mk1]

He meant stretch past the point of elasticity surely? As I would imagine that he knows that they will start stretching even at the torque specified but they will do within their elastic limit.

 

[Michaelfoz]

It's cool. I forgot your 21years of life experience know more than the company supplying and most likely manufacturing company also. These people give out instructions as to cover there ass. As with anything you supply you need to be covered legally. Insurances etc. But nah. They're wrong
pure-motorsport

If you'd like to come into the moss and be proven wrong by mechanical engineers with a combined 100+ years of experience I can have this arranged.

 

[Chip-mk1]

If you'd like to come into the moss and be proven wrong by mechanical engineers with a combined 100+ years of experience I can have this arranged.

Wherever you take him to prove to him that its beneficial to tighten them up much tighter into the hub than specified, its going to need to have different laws of physics than earth.

 

[Michaelfoz]

He meant stretch past the point of elasticity surely? As I would imagine that he knows that they will start stretching even at the torque specified but they will do within their elastic limit.

10 points to chip

Let's say I've taken the initial thread to 50Nm

Whilst torquing to 100Nm the second part will stretch until 50Nm is achieved,

Then the whole stud will stretch evenly to 100Nm

All whilst remaining within its elastic limits

 

[Michaelfoz]

Wherever you take him to prove to him that its beneficial to tighten them up much tighter into the hub than specified, its going to need to have different laws of physics than earth.

And why is that?

 

[Chip-mk1]

And why is that?

Because as you just said in your post above (although a little bit wrongly as a stud doesnt actually "stretch to 100NM" quite like that) the effect of tightening the wheel nut is to load up the whole stud, so however much the stud is initially torqued into the hub with really wont be relevant to the amount of stretch the stud experiences when the wheel nut is done up far more.

 

[Chip-mk1]

PS

What really matters is the length the stud is stretched by, all the torque figures for wheel nuts are actually just guesses to get close to that.

 

[Fletcher]

I have the PMS stud kit, hopefully get them fitted this weekend.

 

[Michaelfoz]

The end of the threads is there to lock the threads in place. The small section between the two threaded ends)
Hence why increasing the torque will make it more difficult to come undone

 

[Michaelfoz]

When you undo the nut the part that is in the hub will go back to 50Nm worth of torque (so to speak)

 

[MG cup]

Realistically 20nm isn't enough IME. Think what 20nm actually feels like when your tightening it up. If you have done and undone enough bolts/nuts/studs in your days you'll know that's not enough.

If you want to follow the manufacturers guidelines to the book then fire on. Since were talking clio's here I bet a months wages the specialist's on here don't follow the torques to the book for cam pulleys, crank pulley and tensioner. You get to have a feel for things when you have done them enough and following instructions isn't always the best way to go.

 

[Mini182]

The specs for the crank, tensioner, idlers, and exhaust pulley always feel about right.

The dephaser always seems to me like it could take a bit more than the specified 100nm though.

Realistically 20nm isn't enough IME. Think what 20nm actually feels like when your tightening it up. If you have done and undone enough bolts/nuts/studs in your days you'll know that's not enough.

If you want to follow the manufacturers guidelines to the book then fire on. Since were talking clio's here I bet a months wages the specialist's on here don't follow the torques to the book for cam pulleys, crank pulley and tensioner. You get to have a feel for things when you have done them enough and following instructions isn't always the best way to go.

 

[Michaelfoz]

The tensioner doesn't feel great IMO!
Such a small torque lol