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FE TALK
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http://www.clubcobra.com/forums/fe-talk/)
| RodKnock |
04-22-2013 11:46 AM |
Quote:
Originally Posted by ERA Chas
(Post 1241024)
Checked several times over the years.
Is your 30% figure based on an exact wheel match-meaning Hali Cobra 7 1/2 / 9 1/2 wheels like Phil's, Lynn's and originals? Or 30% lighter than the same size steel wheel?
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The M & A Castings Advantage |
| RodKnock |
04-22-2013 11:48 AM |
Quote:
Originally Posted by patrickt
(Post 1241025)
Unless you're running at the adhesion break point, I don't think you'd notice much of a difference.
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I'm always "running at the adhesion break point." Literally and figuratively. :LOL: |
| patrickt |
04-22-2013 11:52 AM |
Quote:
Originally Posted by RodKnock
(Post 1241034)
|
RodKnock, you're smarter than that, they're just talking about the elements of aluminum and magnesium, not the wheels.:p The density of aluminum is 2.7kg/m3 and magnesium is 1.74 -- that's 36% They are not saying their wheels weigh a third less.:rolleyes: Now c'mon, you knew that.... |
| rodneym |
04-22-2013 11:56 AM |
I've got unmounted Trigos and Halibrand mags.
I'll put them on my bathroom scale tonight.
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| RodKnock |
04-22-2013 11:59 AM |
Quote:
Originally Posted by patrickt
(Post 1241037)
RodKnock, you're smarter than that, they're just talking about the elements of aluminum and magnesium, not the wheels.:p The density of aluminum is 2.7kg/m3 and magnesium is 1.74 -- that's 36% They are not saying their wheels weigh a third less.:rolleyes: Now c'mon, you knew that....
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I think I missed those two elements on my Chemistry test when we studied the chapter on the Periodic Table of the Elements. :rolleyes: |
| glenview289 |
04-22-2013 11:59 AM |
Al vs Mag
Aluminum (6061 alloy) weighs 2720 kilograms/cubic meter and Magnesium weighs 1738 kilograms/cubic meter or 36.1% lighter than Aluminum. That percentage could vary depending on what alloy and how much of it is needed to cast the two materials. It is also possible that the cross section of one of the wheel materials may need to change to achieve the same strength and therefore also affect the weight difference. I think that if the Magnesium wheels were always available, regardless of any weight advantage, you would see a lot more of them because they are just another one of the cool and unique features of these cars.
Bill
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| rodneym |
04-22-2013 12:02 PM |
duplicate post
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| patrickt |
04-22-2013 12:26 PM |
Quote:
Originally Posted by RodKnock
(Post 1241041)
I think I missed those two elements on my Chemistry test when we studied the chapter on the Periodic Table of the Elements. :rolleyes:
|
Here's a fast shot I took of the back wheel after putting it back on, again, this morning after the weighing process. Now you gotta admit, for a weekend's worth of work...
http://www.clubcobra.com/photopost/d...mounted001.jpg |
| ERA Chas |
04-22-2013 12:33 PM |
Quote:
Originally Posted by glenview289
(Post 1241042)
It is also possible that the cross section of one of the wheel materials may need to change to achieve the same strength and therefore also affect the weight difference.
Bill
|
An excellent point. Both companies may use different structure in the webs, hubs and rims also.
You should post here more than 42 times in 9 years Bill. |
| patrickt |
04-22-2013 04:38 PM |
Quote:
Originally Posted by rodneym
(Post 1241043)
I've got unmounted Trigos and Halibrand mags.
I'll put them on my bathroom scale tonight.
|
Uhhh, why don't you just knock off early today and trot on home to weigh those wheels? No stopping at your favorite watering-hole, either.:cool: |
| rodneym |
04-22-2013 10:33 PM |
Well, I did what I said I'd do.
The problem is that my scale wouldn't weigh anything that light (it's a digital scale).
Sorry.
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| patrickt |
04-23-2013 04:24 AM |
OK, this is a toughie...
Quote:
Originally Posted by rodneym
(Post 1241116)
Well, I did what I said I'd do.
The problem is that my scale wouldn't weigh anything that light (it's a digital scale).
Sorry.
|
1) Weigh yourself.
2) Weigh yourself while holding a wheel.
3) Subtract the two weights.:rolleyes:
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| RodKnock |
04-23-2013 07:46 AM |
Quote:
Originally Posted by patrickt
(Post 1241137)
1) Weigh yourself.
2) Weigh yourself while holding a wheel.
3) Subtract the two weights.:rolleyes:
|
That reminds me. I have an algebra test Friday. :LOL: |
| patrickt |
04-23-2013 07:50 AM |
Quote:
Originally Posted by RodKnock
(Post 1241151)
That reminds me. I have an algebra test Friday. :LOL:
|
Well whatever you do, don't cheat off rodneym.:LOL: |
| rodneym |
04-23-2013 11:55 AM |
I will not tare myself for your sick pleasures, sir.
It was a subconsciously induced brain fart. My Id rejected to contributing to a thread with the word fluoroelestomer in it. :JEKYLHYDE
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| patrickt |
04-23-2013 11:57 AM |
Quote:
Originally Posted by rodneym
(Post 1241167)
I will not tare myself for your sick pleasures, sir.
It was a subconsciously induced brain fart. My Id rejected to contributing to a thread with the word fluoroelestomer in it. :JEKYLHYDE
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You don't have to tell us how much you weigh, just the wheels.:p |
| rodneym |
04-23-2013 12:00 PM |
I don't want to know how much I weigh!!!
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| RodKnock |
04-23-2013 12:11 PM |
Quote:
Originally Posted by rodneym
(Post 1241170)
I don't want to know how much I weigh!!!
|
May I suggest an Ironman Scale? It will not only tell you the weight of your wheels, but also tell you your body fat %. ;) |
| patrickt |
04-23-2013 12:35 PM |
Well are we going to get the dang weights of the wheels or not? Lemmee tell you, one way to get in shape is take those suckers on and off your car a couple of times and lug them around for one reason or another.
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| RodKnock |
04-23-2013 12:42 PM |
Quote:
Originally Posted by patrickt
(Post 1241174)
Lemmee tell you, one way to get in shape is take those suckers on and off your car a couple of times and lug them around for one reason or another.
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Only if you repeated it everyday for the rest of your life. :)
Yes, I want to know the difference in weight between the aluminum and magnesium wheels as well. |
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