Stock rear axles FTL

[Greg E]

Damn...

Curious. When these axles break, is it a torsion break from torquing a weak metal or a sheer snap from an extreme angle?

[fullracegt]

i think they would break near the cv area but iv never broken rear axles before..so not sure

[AdamVR4]

The last one I broke snapped inside the CV boot at the diff...



The fracture surface is basically flat with very little if any necking.

Per this (page 12): http://www.sut.ac.th/engineering/Met...ion%20test.pdf

It looks like a shear (ductile) failure due to torsional loading.

In my case at least, there's very little squat at launch, so I wouldn't expect the angle of the shaft to play a significant role in the failure.

[Maximal]

Nice runs Dave...can't wait to see what that thing really has!

[BigTyla]

The last one I broke snapped inside the CV boot at the diff...



The fracture surface is basically flat with very little if any necking.

Per this (page 12): http://www.sut.ac.th/engineering/Met...ion%20test.pdf

It looks like a shear (ductile) failure due to torsional loading.

In my case at least, there's very little squat at launch, so I wouldn't expect the angle of the shaft to play a significant role in the failure.

Ah, good 'ol Mechanics of Materials. I hated that class!

Looks like shear failure to me, too. Pretty clean break there.

[DocWalt]

Sure looks like shear failure to me as well. I really doubt the angle of the shaft would have any bearing on the break, CV joints are there for a reason

[CoreyB]

Sorry I couldnt make it to the track Dave

[Broomfield Racing]

Thank you Adam,
Yea its a very clean break...my previous axle was even cleaner than yours Adam. Ill take a picture of this one when I get it out.

[AdamVR4]

300M vs stock:



No surprise, they break where the diameter necks down.

[shmoo]

awesome, congrats man!

very nice!

Your transfer case housing is sitting on a shelf, I'm still drooling over it.

send that housing on up here. i've got drooling scheduled, but no new drool ready toys.

_isiah