Tie rod aluminum quality/grade?

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Tie rod aluminum quality/grade?

Post by Prof J » Wed Mar 25, 2020 10:00 pm


What quality/grade of aluminum do you believe the tie rods are constructed, or if you were to recommend an aluminum grade?
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Re: Tie rod aluminum quality/grade?

Post by vcyclenut » Thu Mar 26, 2020 4:56 pm


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Re: Tie rod aluminum quality/grade?

Post by Prof J » Thu Mar 26, 2020 5:52 pm


David,

Thanks. I have a set of lowering links.

I am going to make up a set, specific to my height, and don't know the type of aluminum (grade) bar to purchase.

So that's the interest of my question, what is the appropriate strength aluminum grade?
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Re: Tie rod aluminum quality/grade?

Post by vcyclenut » Thu Mar 26, 2020 6:14 pm


no idea, my guess the best you can buy
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Re: Tie rod aluminum quality/grade?

Post by Prof J » Thu Mar 26, 2020 9:57 pm


Looking for someone who knows aluminum. I do not want to 'under rate', or misapply any aluminum ideas I have.
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Re: Tie rod aluminum quality/grade?

Post by Pud1 » Thu Mar 26, 2020 11:54 pm


I would use 7075

Typical Mechanical Properties**:

Tensile Strength (PSI) 83,000
Yield Point (PSI) 73,000
Elongation 11
Brinell Hardness 150

Note that ordinary structural steel has a Yield Point of 44,000 psi, so that gives you an idea of the strength of this alu.
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Re: Tie rod aluminum quality/grade?

Post by Pud1 » Fri Mar 27, 2020 12:02 am


In addition, aluminum has no fatigue limit. So be sure to radius all diameter transitons to minimize any stress risers.
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Re: Tie rod aluminum quality/grade?

Post by Prof J » Fri Mar 27, 2020 1:33 am


Pud1 wrote:
Fri Mar 27, 2020 12:02 am
In addition, aluminum has no fatigue limit. So be sure to radius all diameter transitons to minimize any stress risers.
Pud 1, thank you for the info. By radius I understand that to mean any changes in width points are 'curved, so basically make the tie rod look like the OEM, as example?
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Re: Tie rod aluminum quality/grade?

Post by Pud1 » Fri Mar 27, 2020 2:31 am


Thats right. NO hard 90 degree corners. Fillet radius them out. The bigger the fillet radius the better. If you want, you could send me a picture of your plan, and I could review it. I am a P.Eng - Mechanical. This sort of thing is right up my alley.
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Re: Tie rod aluminum quality/grade?

Post by Prof J » Fri Mar 27, 2020 2:55 am


Pud1 wrote:
Fri Mar 27, 2020 2:31 am
Thats right. NO hard 90 degree corners. Fillet radius them out. The bigger the fillet radius the better. If you want, you could send me a picture of your plan, and I could review it. I am a P.Eng - Mechanical. This sort of thing is right up my alley.
Pud1,

What a nice offer. I will do it. Thank you.

I intend on just copying the OEM link, and lengthening it about .7 mm, however, I might do up a multi lowering end. Have not decided yet. I hope to have the material ordered by next week.
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