12 replies to this topic

[The German]

Dear Torana friends,

i manufactured alloy 7075 pivot bolts for the rear control arms and the front end.

Also the long bolts for clutch and brake pedals.

Original bolts weight approx 100g - Alloy bolts 23g .there a 12 bolts around.

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[Toranamat69]

Your a gamer man than me - even with a T6 heat treat they are only equivalent in tensile strength to mild steel. The original ones are grade 8 high tensile steel. How did you make the threads? If they are cut threads, they will be even weaker.

That is not even looking at the fatigue strength which generally dictates you need things to be roughly 2 times the size of an equivalent steel item - all depends how far the part is deflecting under load.

I have some Ti ones for mine that I got from here but I havn't used them yet.

http://www.racebolts...ath=663_664_671

I would prefer you didn't use them personally.

Matt

[The German]

Your a gamer man than me - even with a T6 heat treat they are only equivalent in tensile strength to mild steel. The original ones are grade 8 high tensile steel. How did you make the threads? If they are cut threads, they will be even weaker.

That is not even looking at the fatigue strength which generally dictates you need things to be roughly 2 times the size of an equivalent steel item - all depends how far the part is deflecting under load.

I have some Ti ones for mine that I got from here but I havn't used them yet.

http://www.racebolts...ath=663_664_671

I would prefer you didn't use them personally.

Matt

Matt,

thank you for the Racebolt link.

I was seaching this for ages.

Uwe

[Toranamat69]

No worries - it took a fair while to find Ti fasteners in the correct size when I started looking.

I have used some of their 7075 fasteners too - for my fibreglass flares - I really like the look of them over Stainless.

They used to have info on the actual strength of them on their site too which seems to have been removed when they upgraded their site. I couln't find it anyway. There is a reference to the grade of Ti used if you look around.

Matt

[A9X]

need to do something about the pics Uwe, especially on the coilover thread.

lots are keen to see what you are doing, but the pics aren't coming up

[Toranamat69]

Make sure you double check the length you need for the Titanium bolts as the threads are not very long (3/4" for most of the 1/2" diameter bolts) so you have to get the length spot on.

I needed them 10mm longer than standard for my front end and they were just okay for my purposes. I can't remember what length I got as it was a couple of years ago - I would have to go and dig them out to double check. Pretty expensive to get the wrong size though if you buy 12 of them.

You don't want the nut bottoming out on the threaded portion when fully done up or it will increase the stress at that point in the bolt. Ideally you will have a thread or 2 minimum left to go when the bolt is fully tightened down.

[The German]

need to do something about the pics Uwe, especially on the coilover thread.

lots are keen to see what you are doing, but the pics aren't coming up

I dont know whats going wrong with the pics.
It works here at this end with differend computers.
I do use Mozilla firefox as Internet browser

or use this link: http://s5.directuplo...01/br7jr8h5.jpg Front shock

http://s5.directuplo...01/x4dmxdt3.jpg Bolts


Uwe

Edited by The German, 03 March 2011 - 12:15 AM.

[76lxhatch]

Dunno if it helps, but this is what we are getting:

[The German]

Dunno if it helps, but this is what we are getting:

Perhaps i should use another upload provider. Any ideas?

[The German]

Now from Photobucket