Some eye candy for you drilled rotor fans

[baz67]

http://www.marax.at/funpix/porsche_mega_crash.html

But they do not crack right?

[colt zantop]

wow....$hitty!

[MoeBawlz]

Pretty cool how the Porshes are designed to "eject" the engine to rid itself of some of the weight in the result of a crash.

[TonyL]

Pretty odd crash. Im wondering if the impact caused the rotor to snap, or the rotor snapping caused the impact.

[chicane67]

Well...... judging by the skid marks prior to the impact with the guard rail....

Or maybe it locked up due to the fracure... before it went into the rail ??

[bingham72]

interesting... though you can't tell the cause from anything in those pictures. Spinning cars also cause tire marks and that car was smashed to bits, including ripping off the left front wheel.
Where is the dang front tire???

[TonyL]

looks like there is one tire locked up for a loooong way before it hit the rail. Im guessing the failure occured before the impact.

[baz67]

looks like there is one tire locked up for a loooong way before it hit the rail. Im guessing the failure occured before the impact.

Me too. If you look close you can see it was the LF that was locked up. The car went into a spin and hit the guardrail backwards.

[Patrick]

My guess is that the front left tire came apart at speed. Driver hit the brakes and spun the car around??

[baz67]

How did the LF come apart at speed? There are skid marks on the road. Rotor broke then locked up the LF.

[MrQuick]

looks like he was going too fast then panicked when it got away from him. Maybe another car got in his way?? It is right before an on ramp, you know how fast things get hairy doing 120+.

Then $8,000 carbon fiber rotors break alot easier than a cast iron would on impact. Thankfully the guard rail did its job, g forbid that thing hit a tree. jk

[Jims78elky]

Eeek,


Kind of reminds me of the movie "plains trains automobiles"


-John Candy,


"Oh..yeah..they will be able to buff this out no problem"


lol..

[zbugger]

You know, I see more than one tire mark on the road there. That means that more than one tire was locked up. It's all too possible that the car spun while trying to avoid a slower moving car. Hitting the guard rail could have also caught the wheel and ripped the assembly from the car. Just that bouncing around could have caused the brake rotor to shatter. And where is the tire that was on that wheel? When wheels come off cars at speed, they usually keep the tire. It very well could have blown causing that wreck. Oh yeah, I've seen solid rotors that shattered.

[muthstryker]

truck load of bondo will fix that no problem :Alchy:

[MrQuick]

maybe it was a bad spot? There seems to be a lot f them in Europe. *VIDEO HIGH JACK ALERT* http://www.2dorks.com/video/tunnel.wmv

[Steve68]

I love that Russian video, especially the trucks !!

[andrewb70]

Pretty cool how the Porshes are designed to "eject" the engine to rid itself of some of the weight in the result of a crash.

That is a pretty neat trick!

Now how the hell can you guys even begin to say what caused the crash?

Andrew

[Patrick]

How did the LF come apart at speed? There are skid marks on the road. Rotor broke then locked up the LF.

Firestones came apart at much lower highway speeds. How do you explain no trace of the tire on the rim? And a car spinning at high speed will leave skid marks on the road.

[baz67]

You really think this car had Firestones?

I agree it is a stretch to find the cause, but what force would cause the rotor to brake due to the accident? The wheel it was in is fine(relative).

[Patrick]

I would bet $100 that car DID NOT have Firestones...I was just making a point. And yeah I think it is fun to try and come up with an idea of what happen. I thought the rotor may have broken on impact-- on the wheel that was torn from the car. If you look at the photos both passenger rotors appear to be intact. The rotor could be from driver's rear. It looks like the rim is actually broken in one of the photos. If it could break the rim, it could certainly break the rotor. Whatever happened...that car is messed!! Luckily from looking at the people in the photos it appears that no one got seriously hurt.

[TonyL]

The wheel that is wedged under the guardrail has a hole in it possibly due to the broken rotor. Seems logical that the wheel locked causing the car to swerve into the rail, tearing the siezed wheel off the car, The fact that the wheel was locked for so long gives credence to the idea that the rotor was broken, this car no doubt has ABS standard. Im unaware of any porsche's that make that don't have ABS. Take into account that the wheel is missing its tire, (probably due to being skidded until it exploded) all factors point to a broken rotor, lodged in the wheel.

[baz67]

If you look at what looks like the caliper in the wheel, the bracket looks sort of bent.

[OHCbird]

I understand your point of view (and opinion) on drilled / slotted rotors- so why then would one of the world's top (if not THE top) sports car manufacturer have them as standard equipment on half of their models?

[gt1guy]

I understand your point of view (and opinion) on drilled / slotted rotors- so why then would one of the world's top (if not THE top) sports car manufacturer have them as standard equipment on half of their models?

Porsche does not drill their disks, the holes are cast in when manufactured. Big difference. Drilling holes creates hot spots where cracks can propagate from. Factory Porsche race cars run solid rotors.
Those people were very lucky to bounce away from the guardrail. You can see where it wrapped around the back of the car. If the guardrail had slid up another foot, they wouldn't have heads.

Kevin

[baz67]

I understand your point of view (and opinion) on drilled / slotted rotors- so why then would one of the world's top (if not THE top) sports car manufacturer have them as standard equipment on half of their models?

Because it sells, plain and simple. Do not look at what the manufactures put on their models for sale, look at what those same manufactures put on their racecars.

[Steve1968LS2]

This hardley qualifies as evidence that the guys rotor just spontaniously blew apart... on a straight away.. lol

It does show that hitting solid objects at high speed can break parts.. maybe if it wasn't drilled it wouldn't have broken in the impact and then the car would only be 99.9% totaled :)

[Steve1968LS2]

Because it sells, plain and simple. Do not look at what the manufactures put on their models for sale, look at what those same manufactures put on their racecars.

Your right.. cause it looks good.. and it does.

There is no question that a drilled rotor is more prone to cracking compared to a solid rotor. The question is to the degree it's more likely to crack and if anyone other than a racecar should care.

I also find it unlikely that these type rotors (when done right) are suffering catastrophic failures due to design (although, like any part, they could fail due to a mfg defect). Especially given how 99.999% of the cars that come with drilled rotors are driven.

I doubt car companies would be fitting them to thier cars if they were prone to this kind of failure especially in this "sue happy" world we live in.

[Steve1968LS2]

The wheel that is wedged under the guardrail has a hole in it possibly due to the broken rotor. Seems logical that the wheel locked causing the car to swerve into the rail, tearing the siezed wheel off the car, The fact that the wheel was locked for so long gives credence to the idea that the rotor was broken, this car no doubt has ABS standard. Im unaware of any porsche's that make that don't have ABS. Take into account that the wheel is missing its tire, (probably due to being skidded until it exploded) all factors point to a broken rotor, lodged in the wheel.

lol.. I think people will see whatever they want in those pictures to back up whatever opinion they had on the subject before they clicked this thread..

There is no way anyone can tell what happened in that accident given the data we have.

When I was young my buddy too a brand new Camaro into the guardrail and curb at about 60mph.. the impact with the curb sheared the wheel in half and took the bottom third of the rotor with it... and it wasn't even drilled. Don't underestimate the forces involved in an impact.

[in2protour]

the last two pictures of the engine out on the road reminds me of the motor oil commercial where engine from cars pops out of the engine compartment and slide across the raod to get to the oil.

[OHCbird]

Yes, I know that the holes aren't drilled from the factory. As you stated-if they are engineered in there to begin with, they should be less prone to cracking.

Brian- (really not busting your balls) There are plenty of teams running 'drilled' rotors: They seem to be doing OK with them.
https://static1.pt-content.com/images/noimg.gif

My brother is one of the suspension guys for the #4 car on Team Corvette- according to him and Doug Fehan they've only had the one rotor failure (johnny O'), which was chalked up to bad metalurgy. I think that even if this was a rotor failure, we can't just blame it on the fact that it's 'drilled'. For example: what type of care & maintenance did the owner do and how hard has he been on the brakes?

[Matt@RFR]

OHC, how many races do the 'vette teams run the same rotors?

[baz67]

Some race teams do use drilled rotors to qualify only. They then switch to real rotors to race in.

[Steve1968LS2]

Yes, I know that the holes aren't drilled from the factory. As you stated-if they are engineered in there to begin with, they should be less prone to cracking.

Brian- (really not busting your balls) There are plenty of teams running 'drilled' rotors: They seem to be doing OK with them.


My brother is one of the suspension guys for the #4 car on Team Corvette- according to him and Doug Fehan they've only had the one rotor failure (johnny O'), which was chalked up to bad metalurgy. I think that even if this was a rotor failure, we can't just blame it on the fact that it's 'drilled'. For example: what type of care & maintenance did the owner do and how hard has he been on the brakes?

LIES!!! LIES!!! I call shenanigans!

drilled rotors are death on wheels!!! They will explode even when driving on a straight road and not using your brakes!!! (just look at the pics in the beginning of this thread.. the rotor just spontaniously exploded on a straight road!!!!

Ok.. that was a bit dramatic, but I was trying to make a point.

What's more prone to crack.. a drilled rotor or a solid one? well duh, a drilled one.. It would be silly to argue otherwise.

Does this mean that all drilled rotors will crack for sure? nope.. If I was building a racecar that was going to be on the track all the time I would want solid rotors.. but for almost everyone "drilled" rotors won't be a problem so long as they were made correctly. I ran drilled Wilwoods on my SS and after a dozen open track events (with me beating on them badly) they never had a major crack (although they did turn all sorts of pretty colors)..

The argument that they are inherently unsafe is silly given how many are out there and how many have problems. Again, I doubt GM or them german car companies would go chasing lawsuits by putting unsafe equipment on thier cars..

[Steve1968LS2]

Some race teams do use drilled rotors to qualify only. They then switch to real rotors to race in.

Real rotors? So you know that the vette up top was getting ready to qualify on the "fake" rotors? Why? We all know there's very little benefit to running drilled rotors these days, so why would they risk running unsafe fake rotors even to qualify? Cause they are less heavy?


OHC, how many races do the 'vette teams run the same rotors?

So they only temporarily use unsafe equipment? lol.. Are they swapping rotors during the race?

If they last an entire race on a professional race car then how long would they last on your average street car? :)

Don't mind me.. I just feel like debating.. I could argue the other side tomorrow if you like :thankyou:

[OHCbird]

Matt- I'll ask.