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-   Track / Autocross / Drifting / Dragstrip (http://www.the370z.com/track-autocross-drifting-dragstrip/)
-   -   Broken spindle (http://www.the370z.com/track-autocross-drifting-dragstrip/57220-broken-spindle.html)

ChrisSlicks 07-04-2012 03:37 PM

Other than that it looks like the wheel spin sensor wire got pinched a bit, but looks repairable. Brake lines are intact but look like they were pulled on pretty hard so I will replace them preemptively.

Everything else looks good!

chrischhorn 08-04-2013 12:58 AM

Just reviving this thread as my spindle broke in the exact same spot as yours! difference is i didn't hit anything..... My wheel is not bent, My strut is not blown, unfortunately the tire did get sliced on the inside from hitting the strut during impact. The wheel is scratched up and chipped pretty bad on the inside of the wheel

ChrisSlicks 08-04-2013 09:04 AM

Wow that's crazy! Possible pre-existing stress fracture?

I believe the spindle is designed to fail at that point once it's maximum stress load is exceeded. No one makes a race spec spindle that I'm aware of.

kenchan 08-04-2013 10:58 AM

are you running stiff coilovers? could be fatigue fracture from prior repetitive incidents with bumps and stuff.


... or just a defective part.

martin82 08-04-2013 12:21 PM

Pretty sure shamu also broke same part at Laguna by going over the red berms which are huge

chrischhorn 08-04-2013 06:35 PM

Quote:

Originally Posted by kenchan (Post 2431695)
are you running stiff coilovers? could be fatigue fracture from prior repetitive incidents with bumps and stuff.


... or just a defective part.

My coilovers are not set at a very stiff setting. 6 clicks out of 15 and the springs are not compressed very much. They are probably set at the lower end of their rate. I'm running the Powertrix R/T setup but I have them set for DD then track since all I have is AutoX out here in Hawaii. My wife said they rode better then stock.

Quote:

Originally Posted by ChrisSlicks (Post 2431605)
Wow that's crazy! Possible pre-existing stress fracture?

I believe the spindle is designed to fail at that point once it's maximum stress load is exceeded. No one makes a race spec spindle that I'm aware of.


Its possible but I've never hit anything. My Coilovers are set fairly soft. All I have is autoX so I don't believe these should be able to reach anywhere near their maximum threshold. Going over the damages, only thing really damage other then collateral from he failure is the spindle arm. Wheels not bent (but scuffed up pretty bad), tires not blown (but has a large gouge in it from falling onto the strut but still holds air), strut is not damaged, sway bar not damaged. Only damage is the arm and the torn ball joint of course and body panels due to the being pulled off the side of the road.

cossie1600 08-04-2013 06:42 PM

Sounds like I should probably check for cracks at the next tire change

kenchan 08-04-2013 07:24 PM

Quote:

Originally Posted by chrischhorn (Post 2432157)
My coilovers are not set at a very stiff setting. 6 clicks out of 15 and the springs are not compressed very much. They are probably set at the lower end of their rate. I'm running the Powertrix R/T setup but I have them set for DD then track since all I have is AutoX out here in Hawaii. My wife said they rode better then stock.

hummm...passed the wifey test i see. probably not the coilovers then. :icon17:

Sh0velMan 08-05-2013 08:00 AM

It's definitely not the coilovers... those Powertrix units are not stiff at all compared to motorsports-oriented parts.

It's a casting defect or you really hit the **** out of the spindle at some point in the past and it's taken this long to fail.

ChrisSlicks 08-05-2013 10:30 AM

The actual cause of failure I believe is when the suspension is over compressed and causes the top of spindle and upper control arm to push upwards and come into contact with the top of the inner fender.

A good sized pothole would do it, and actually softer suspension is probably more likely to allow a contact vs a stiff suspension.

The SPC control arms may have been a contributor, they are steel and have no give, and the upper ball joint they use reduces the upper clearance slightly vs stock. With stock upper arms you might bend the upper control arm instead, not sure.

Shamu 08-05-2013 11:27 PM

Nope never seen it before.

http://lh3.googleusercontent.com/-8b...1212%20025.JPG


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