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Old 03-30-2007, 07:00 PM   #1 (permalink)
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aluminum links

to the guys running home made aluminum links, is drilling and tapping the link ends strong enough or are the aluminum threads ripping out? also are you guys bending these links? thanks
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Old 03-30-2007, 07:06 PM   #2 (permalink)
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You should check out "Project- Tt Hilux" that Dan Trout, the owner of Fishmouth Fabworks is biulding. He is running home made aluminum links. He has biult a couple sets for some friends of his. good luck
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Old 03-30-2007, 10:25 PM   #3 (permalink)
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What would be the difference between home made and store bought?
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Old 03-30-2007, 10:28 PM   #4 (permalink)
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What would be the difference between home made and store bought?
He made his own barstock out of beercans.
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Old 03-31-2007, 12:20 AM   #5 (permalink)
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links

no difference between store bought or home made i just wasnt sure if they are just threading into the aluminum or using inserts of some sort.
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Old 03-31-2007, 06:57 AM   #6 (permalink)
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to the guys running home made aluminum links, is drilling and tapping the link ends strong enough or are the aluminum threads ripping out? also are you guys bending these links? thanks
ALuminum has a higher yield strength than mild steel, so the same can be said for the thread. The aluminum thread is stronger, but it is just not as robust as a steel thread. As long as your rod ends are kept in place with a lock nut and/or locktite (so they wont move and wear the threads) you will not have any trouble.

Aluminum


Tensile Strength, Ultimate 310 MPa, 45000 psi
Tensile Strength, Yield 275 MPa, 39900 psi

hot rolled 1018 steel

Tensile Strength, Ultimate 400 MPa, 58000 psi
Tensile Strength, Yield 220 MPa, 31900 psi
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Old 03-31-2007, 07:22 AM   #7 (permalink)
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i have seen no issues with tapping threads, but i only run them for top links. i have seen some aluminum hex bar bent and cracked almost into a "U" after a nasty roll down a really steep hill, and the tapped threads were still fine.
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Old 03-31-2007, 09:03 AM   #8 (permalink)
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Quote:
Originally Posted by bushauler View Post
to the guys running home made aluminum links, is drilling and tapping the link ends strong enough or are the aluminum threads ripping out? also are you guys bending these links? thanks
nope. threads are good as long as you tap them correctly. 7075 has a good memory. thell bend and spring back. mine are 2" 7075. 40" centers. the bar length is 35" so they are pretty stiff.
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Old 03-31-2007, 11:03 AM   #9 (permalink)
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Quote:
Originally Posted by imagineer View Post
ALuminum has a higher yield strength than mild steel, so the same can be said for the thread. The aluminum thread is stronger, but it is just not as robust as a steel thread. As long as your rod ends are kept in place with a lock nut and/or locktite (so they wont move and wear the threads) you will not have any trouble.

Aluminum


Tensile Strength, Ultimate 310 MPa, 45000 psi
Tensile Strength, Yield 275 MPa, 39900 psi

hot rolled 1018 steel

Tensile Strength, Ultimate 400 MPa, 58000 psi
Tensile Strength, Yield 220 MPa, 31900 psi

My tables show this (values in MPa)

6061 (heat treated and aged, T6 temper) yield strength 276, tensile strength 310
7075 (heat treated and aged, T6 temper) yield strength 505, tensile strength 572
2024 (heat treated and aged, T3 temper) yield strength 345, tensile strength 485
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Old 03-31-2007, 05:49 PM   #10 (permalink)
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aluminum

thanks for the input
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Old 03-31-2007, 07:41 PM   #11 (permalink)
 
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What would be the advantage of using Aluminum?
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Old 03-31-2007, 08:03 PM   #12 (permalink)
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I think the biggest advantage is that it comes pre heat treated. If you wanted the same out of chrome-moly you would have to weld on bungs and then send it out to have it heat treated. With the aluminum you just cut to length, drill, tap, and go. Poly Performance does however sell some pre-heat treated chrome-moly link material.
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