Here You Go Chas. - The Finest Fluoroelastomer

[ERA Chas]

Originally Posted by RodKnock

The weights of each set of wheels doesn't seem right. Magnesium wheels are advertised as being approx. 30% less weight.

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?

[patrickt]

Uhhh, RodKnock, original mags with Avons look like they come in higher than Trigos and Yokos. Unless you're running at the adhesion break point, I don't think you'd notice much of a difference....

[RodKnock]

Originally Posted by patrickt

Unless you're running at the adhesion break point, I don't think you'd notice much of a difference.

I'm always "running at the adhesion break point." Literally and figuratively.

[rodneym]

I've got unmounted Trigos and Halibrand mags.
I'll put them on my bathroom scale tonight.

[rodneym]

duplicate post

[patrickt]

Originally Posted by rodneym

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.

[glenview289]

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

[ERA Chas]

Originally Posted by glenview289

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.

[RodKnock]

Originally Posted by ERA Chas

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?

The M & A Castings Advantage

[patrickt]

Originally Posted by RodKnock

The M & A Castings Advantage

RodKnock, you're smarter than that, they're just talking about the elements of aluminum and magnesium, not the wheels. 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. Now c'mon, you knew that....

[RodKnock]

Originally Posted by patrickt

RodKnock, you're smarter than that, they're just talking about the elements of aluminum and magnesium, not the wheels. 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. Now c'mon, you knew that....

I think I missed those two elements on my Chemistry test when we studied the chapter on the Periodic Table of the Elements.

[patrickt]

Originally Posted by RodKnock

I think I missed those two elements on my Chemistry test when we studied the chapter on the Periodic Table of the Elements.

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...