Here You Go Chas. - The Finest Fluoroelastomer

[ERA Chas]

Would you do me a favor now??
When the wheels come off for Avon installation, would you weigh one of each and post?
My uncoated, unfinished wheels weigh 17.8-F / 19.7-R.
Then weigh with an Avon on each. Radials being much heavier than bias anyway.
The BB's on my wheels with balance weights are 35-F / 41-R.
Not a pissing contest-I'm hoping to help guys on the fence about mag see the dramatic savings in unsprung weight. Sort of add to the CC database.
Although not actually weighed, I had a borrowed set of PS wheels in 7.5 and 9.5 (aluminum FIAs) which were substantially heavier than the mags.

[patrickt]

Originally Posted by ERA Chas

Would you do me a favor now??

But of course. Tomorrow I will pull them back off and weigh them (bathroom scale, but pretty accurate). I know what my Yokos weigh.

[patrickt]

Chas, my front 235-50-15 Trigos, with Yokos, weigh 43 lbs. The tires alone weigh 26 lbs. The front wheels are 17 lbs.

My rear 295-50-15 Trigos, with Yokos, weigh 54 lbs. The tires alone weigh 32 lbs. The rear wheels are 22 lbs.

Avon CR6ZZ 245/60VR15 weigh 30 lbs.
Avon CR6ZZ 295/50VR15 weigh 34 lbs.
http://rogerkrausracing.com/racetire...CR500+2013.pdf

[RodKnock]

Originally Posted by patrickt

The front wheels are 17 lbs. The rear wheels are 22 lbs.

Originally Posted by ERA Chas

My uncoated, unfinished wheels weigh 17.8-F / 19.7-R.

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

[patrickt]

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.

Surely someone on here has unmounted Trigos and can put them on the scale to double check me. But I think I'm right (did it twice, all four wheels). Now this is a bathroom scale, but I did check the calibration of it with 30lbs of my son's free weights, and it was accurate.

[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.

[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

[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....