Wilwood Failure

[SubieNate]

I've been searching around online to see if there's any more info posted on this particular failure aside from that thread but I haven't found anything.

As it stands, there was no indication given that the failure was caused by an impact. When you hit something, all bets are off. I've bent stock wheels pretty badly doing that and you know they're built to a high standard, even just for liability.

I didn't think you were attacking me. Sometimes I get a bit smartass online. It's the British heritage coming out.

Nathan

[Cheddar]

Nothing on this earth is perfect. Everything has a failure rate. May it be 1% or 0.00000000000000001%. Nothing last forever.

[supramkivtt2jz]

Originally Posted by Cheddar

Nothing on this earth is perfect. Everything has a failure rate. May it be 1% or 0.00000000000000001%. Nothing last forever.

Candy corn does.

[CSG Mike]

Originally Posted by mrk1

Really need to hear a first hand explanation of what happened for this to have any validity.

Anyone can google image search for days finding pictures of broken parts.

Quick example. A buddy of mine has a broken team dynamics wheel hanging on his wall. The wheel was off his rally car. Some dude saw it and then decided TD wheels were weak. My buddy pointed out that he should have seen the rest of the car, a high speed impact with the wheel caused an end over end tumble. Any wheel would have broken.

I was there first hand and witnessed the off. The owner was driving. What do you want to know?

[CSG Mike]

Originally Posted by Dave-ROR

Did he ever inspect the mounting "ears" where it mounts to the hat? Not the easiest to do, I check mine as much as I can after removing pads, but removing the caliper is somewhat annoying just to check..

The car in question typically has a full crew regularly working on it...

[Captain Snooze]

Originally Posted by CSG Mike

The key thing to notice here is the way the rotor mounts onto the top hat versus the AP Racing kit.

Ummm... Pardon me but what am I noticing?

[ST185RC]

Originally Posted by Cheddar

Nothing on this earth is perfect. Everything has a failure rate. May it be 1% or 0.00000000000000001%. Nothing last forever.

Human stupidity, the only man-made product that will never fail; if only it can be harnessed as an energy source.

[industrial]

Originally Posted by Cheddar

Nothing on this earth is perfect. Everything has a failure rate. May it be 1% or 0.00000000000000001%. Nothing last forever.

Even cold november rain.

[jamal]

Originally Posted by CSG Mike

The key thing to notice here is the way the rotor mounts onto the top hat versus the AP Racing kit.

I have never liked the way the wilwood rotors go together. IMO the reason this happened is because there is zero float and no ability for the rotor/hat interface to compensate for thermal expansion or a slight misalignment.

Most other two piece rotors use a drive pin with float which allows the rotor to expand independently of the hat as well as reduce brake piston knockback. The wilwood hats are just straight bolted on there.

Here's a nice post by essex that explains the difference with more detail
http://www.essexpartsblog.com/news/f...ng-brake-discs

And Stoptech has some pictures of their mounting system here:
http://www.stoptech.com/products/rot...ch-aero-rotors
and more here: http://www.zeckhausen.com/StopTech/R...eplacement.htm

[CircuitJerk]

The lack of comments about the oxidation and surface rust evident in the cooling fins and elsewhere leads me to believe this is a non issue?
Even though it is minimal, is this not relevant in some way perhaps?

[AZFA20]

Originally Posted by CircuitJerk

The lack of comments about the oxidation and surface rust evident in the cooling fins and elsewhere leads me to believe this is a non issue?
Even though it is minimal, is this not relevant in some way perhaps?

It didn't go unnoticed but I never mentioned it because again too many variables to judge that alone.

[SubieNate]

Originally Posted by CircuitJerk

The lack of comments about the oxidation and surface rust evident in the cooling fins and elsewhere leads me to believe this is a non issue?
Even though it is minimal, is this not relevant in some way perhaps?

Most likely just an artifact of getting really hot repeatedly. Most anticorrosion coatings etc don't last at track temps. I'm not sure this is the case but it's a guess. Height temps encourage oxidation as well.

[CSG Mike]

Originally Posted by Captain Snooze

Ummm... Pardon me but what am I noticing?

Excellent response answered the question for me!

Originally Posted by jamal

I have never liked the way the wilwood rotors go together. IMO the reason this happened is because there is zero float and no ability for the rotor/hat interface to compensate for thermal expansion or a slight misalignment.

Most other two piece rotors use a drive pin with float which allows the rotor to expand independently of the hat as well as reduce brake piston knockback. The wilwood hats are just straight bolted on there.

Here's a nice post by essex that explains the difference with more detail
http://www.essexpartsblog.com/news/f...ng-brake-discs

And Stoptech has some pictures of their mounting system here:
http://www.stoptech.com/products/rot...ch-aero-rotors
and more here: http://www.zeckhausen.com/StopTech/R...eplacement.htm

[Hanakuso]

Originally Posted by CSG Mike

This was on a rather well known time attack car... those are JRZs you see in the back. The pic is less than a month old; I was there when it happened.

The key thing to notice here is the way the rotor mounts onto the top hat versus the AP Racing kit.

But isn't this specific Wilwood mounting basically the same as the "Sprint" kit?