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Alum? Ti? Chromoly? CF? Steel?

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Alum? Ti? Chromoly? CF? Steel?
Old January 14th, 2017, 07:01 PM   #1
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Alum? Ti? Chromoly? CF? Steel?

If cost were not a factor which material would you have preferred the Viper frame be made of? I'm guessing chromoly or Ti?
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Old January 14th, 2017, 07:06 PM   #2
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Old January 14th, 2017, 07:11 PM   #3
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The mild steel tubing absorbs impact better and is fixable by most any ressonably skilled technician.
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Old January 14th, 2017, 07:43 PM   #4
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Dean, taking the technician out of the equation, what if chromoly or Ti could be had with a thinner wall? It still wouldn't have the impact properties but could it be acceptable?
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Old January 14th, 2017, 07:44 PM   #5
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Looks like Ferrari uses aluminum.
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Old January 14th, 2017, 07:55 PM   #6
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It's a fucking DODGE.
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Old January 14th, 2017, 08:22 PM   #7
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Old January 14th, 2017, 09:14 PM   #8
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It's a fucking DODGE.
That's almost NASCAR sticker size!!!
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Old January 15th, 2017, 08:47 PM   #9
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The mild steel tubing absorbs impact better and is fixable by most any ressonably skilled technician.
Better would be not to crash. Just sayin.............
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Old January 15th, 2017, 10:42 PM   #10
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Quote:
Originally Posted by GTS Dean View Post
The mild steel tubing absorbs impact better and is fixable by most any ressonably skilled technician.
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Originally Posted by dave6666 View Post
It's a fucking DODGE.
Quote:
Originally Posted by 99RT10>S View Post
Better would be not to crash. Just sayin.............
Look, I know it's not asking if you like small or big tits, it's a fantasy question not a practical one. He dosent have cable so humor him a bit.......
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Old January 16th, 2017, 12:01 AM   #11
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Quote:
Originally Posted by GTS Dean View Post
The mild steel tubing absorbs impact better and is fixable by most any ressonably skilled technician.
But those and cost are it's only advantages. He said cost is no object. As said above, carbon fiber with titanium for suspension (and at least some drivetrain) mounting points.
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Old January 16th, 2017, 07:00 AM   #12
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Corvette now has an aluminum frame. Several others do too.
Tesla was on display a few days ago and I took pics of their aluminum frame.

Just wondering if cost for other materials were competitive what would the manufacturer's build.
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Old January 16th, 2017, 08:01 AM   #13
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Ti is a very difficult material to form or to weld. Chromoly can be welded, but must be stress relieved after welding. Chromoly is very brittle compared to mild steel and doesn't perform well in crash tests.

I have to ask this question: If these two materials are so great, then why don't we see them being used extensively in uber-exotics like Bugattis and Koenigeggs? Because their 'advantages' aren't broadly useful in this context. That's why we see so much more aluminum and carbon fiber composite construction in use. Aluminum can be drawn, formed, welded and bonded with much the same techniques as steel.
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Old January 16th, 2017, 09:36 AM   #14
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Good points Dean.

Some folks use chromoly in roll cages. Anybody know what the Oreca Viper frames and cages were made out of?
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Old January 16th, 2017, 11:41 AM   #15
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Quote:
Originally Posted by Chuck 98 RT10 View Post
Corvette now has an aluminum frame. Several others do too.
Tesla was on display a few days ago and I took pics of their aluminum frame.

Just wondering if cost for other materials were competitive what would the manufacturer's build.
Those are all volume production cars. If cost was no object, they would use hand-laid carbon fiber composite for most of the frame and advanced alloys like HEA where metal is required.
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Old January 16th, 2017, 11:44 AM   #16
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Quote:
Originally Posted by GTS Dean View Post
Ti is a very difficult material to form or to weld. Chromoly can be welded, but must be stress relieved after welding. Chromoly is very brittle compared to mild steel and doesn't perform well in crash tests.

I have to ask this question: If these two materials are so great, then why don't we see them being used extensively in uber-exotics like Bugattis and Koenigeggs? Because their 'advantages' aren't broadly useful in this context. That's why we see so much more aluminum and carbon fiber composite construction in use. Aluminum can be drawn, formed, welded and bonded with much the same techniques as steel.
Good points when cost is a concern. And in the real world it always is, only to what degree varies.
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Old January 16th, 2017, 11:47 AM   #17
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Originally Posted by Chuck 98 RT10 View Post
Good points Dean.

Some folks use chromoly in roll cages. Anybody know what the Oreca Viper frames and cages were made out of?
A chrome moly cage is lighter (where thinner wall tubing is allowed).

Last edited by Gen3Fan; January 16th, 2017 at 12:05 PM.
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Old January 16th, 2017, 11:48 AM   #18
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Aluminum has great strength to weight ratio. It works great as an auto frame since it doesn't undergo reciprocating stress and should never fatigue under normal operation (aluminum has issues in high-reciprocating load situations).

This would be a great alternative though:

New metal alloy has highest strength-to-weight ratio of any metal - ScienceAlert
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Old January 16th, 2017, 11:49 AM   #19
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I found this interesting: http://st.motortrend.com/uploads/sit...r-frame-02.jpg


For stress points they used forged composite instead riveted and/or glued in pieces of metal .

Last edited by Gen3Fan; January 16th, 2017 at 11:55 AM.
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Old January 16th, 2017, 11:54 AM   #20
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Aluminum has great strength to weight ratio. It works great as an auto frame since it doesn't undergo reciprocating stress and should never fatigue under normal operation (aluminum has issues in high-reciprocating load situations).

This would be a great alternative though:

New metal alloy has highest strength-to-weight ratio of any metal - ScienceAlert
One of the HEAs material scientists are working on.
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