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-   -   Never considered how much damage a tow hook can cause (https://www.miataturbo.net/race-prep-75/never-considered-how-much-damage-tow-hook-can-cause-55962/)

kenzo42 03-01-2011 05:41 PM

Never considered how much damage a tow hook can cause
 
2 Attachment(s)
A guy from a OG honda board smashed into an armco @115mph. His tow hook penetrated the armco and caused his front end to shift significantly.

Attachment 190649

Attachment 190650



Tow hooks...good or bad?

Braineack 03-01-2011 05:43 PM

never learned the English language very well either?


His shit was fucked regardless of the hook...

IHI 03-01-2011 05:48 PM

Quite nifty how he kept steering with the airbag popped out. Why did he lost it anyway?

kenzo42 03-01-2011 05:52 PM

fixed. lol.

Sean 03-01-2011 05:54 PM

I am surprised his track car still has airbags in it, and he shit was done no matter what at that speed.

kenzo42 03-01-2011 06:00 PM

I understand he was done for, but what if he didn't impact as hard but hook still penetrated the armco? Not sure if this makes any difference.

TurboTim 03-01-2011 06:06 PM

what's an armco and why did he crash anyway? seemed the ass end just came around. Rear wing came off?

kenzo42 03-01-2011 06:09 PM

Armco is railing.

http://www.dlhonline.co.uk/ekmps/sho...ier-1255-p.jpg

BenR 03-01-2011 06:09 PM

Looks like if he hit an armco at 115, the tow hook prevented much more severe damage.

rider384 03-01-2011 06:25 PM

That honda took the kit pretty well. I'm impressed.

ScottFW 03-01-2011 11:20 PM

I can't figure out why the car came around like that. Right where he wrecked along the front straight is a kink and ideally you treat it like an apex, but there's little steering input required to do so. And there's no weirdness in the track surface there that I remember. Maybe he hit some debris or fluid, I dunno. It's just a bizarre place to wreck. The car looks pretty good though, considering. That should buff right out.

I have seen an RX-8 crash almost in that exact same spot, but that was a known case of money shifting- guy was in 4th and wanted to grab 5th but got 3rd instead. The loss of rear traction as he apexed the kink caused it to come around and eat the Armco. VIR will bill you for replacement, and you can keep the bent stuff as a souvenir. :bigtu:

curly 03-01-2011 11:45 PM

Agreed, the sideways skimming did all the damage, regardless of the tow hook.

It's weird, looking at the video then back up at the pictures, it almost appears as if they've replaced the windshield in the pictures.

I also agree with the fluid/debris theory, he doesn't seem like a terribly aggressive driver, and that spin came out of no where.

MD323 03-01-2011 11:53 PM

look at his face in the rearview, he was watching to make sure he cleared the Porsche, looks up thinks he needs to turn in and looses it.

/opinion

kenzo42 03-02-2011 12:48 AM

.

falcon 03-02-2011 03:28 AM

looks like he had a blowout? Or possibly a suspension link fail?

That kind of oversteer... in a FWD car could not happen (IMO) from such a tiny steering input. It takes a lot more to upset the rear or a FWD car.

Machismo 03-02-2011 04:11 PM

After reading some of the responses and watching the video several times and slowing down, his turning input starts well before the spin and the wheel does not move when the car started rotating. I thought at first he lost concentration as I noticed him checking mirrors as well just prior. But he does not add more input as is required to get car to come around like that. Does seem something broke causing this.

Joe Perez 03-02-2011 04:52 PM


Originally Posted by curly (Post 696067)
It's weird, looking at the video then back up at the pictures, it almost appears as if they've replaced the windshield in the pictures.

I don't think so. In the first picture, it's quite clear that the windshield is cracked up on the pax side, and in the second pic you can just barely make out a few spiderwebs at the bottom of the glass.

It does seem that only the inside layer cracked, and that the outside layer is completely intact. Damned odd, and it makes me wonder- did the airbag do that? It does seem that the damage radiates outward from a point just above the airbag enclosure.


Originally Posted by Machismo (Post 696309)
Does seem something broke causing this.

That's been driving me nuts as well. It seems like he is fairly steady-state on both steering and throttle when it just goes sideways. I can't even see any sudden jerk in the wheel, which I'd expect if he had a front blowout or something on the front suspension just came apart.

curly 03-02-2011 04:56 PM


Originally Posted by Joe Perez (Post 696320)
I don't think so. In the first picture, it's quite clear that the windshield is cracked up on the pax side, and in the second pic you can just barely make out a few spiderwebs at the bottom of the glass.

It does seem that only the inside layer cracked, and that the outside layer is completely intact. Damned odd, and it makes me wonder- did the airbag do that? It does seem that the damage radiates outward from a point just above the airbag enclosure.

iPhone picture viewing fail then.

It is the airbag, in an accident of mine the only thing that damaged the windshield was the passenger air bag cover flying up, I couldn't even bend the panel back, as it was now stuck between the top of the dash and the windshield.

viperormiata 03-02-2011 05:28 PM

Lol, read the video description people.


"Lost the engine on the front straight,putting down oil.I spun in the oil,hit the wall.Fail."

Joe Perez 03-02-2011 06:05 PM


Originally Posted by viperormiata (Post 696331)
"Lost the engine on the front straight,putting down oil.I spun in the oil,hit the wall.Fail."

Comments not appearing when the video is viewed as an embed into the forum thread fail, I guess.

Oil on the track makes a lot of sense. Damned odd that I couldn't tell any change in the sound coming from the engine.

viperormiata 03-02-2011 06:17 PM


Originally Posted by Joe Perez (Post 696347)
Comments not appearing when the video is viewed as an embed into the forum thread fail, I guess.

Oil on the track makes a lot of sense. Damned odd that I couldn't tell any change in the sound coming from the engine.

I watched it a few times to try and diagnose why he spun. Then my detective skills lead me to check the actual comments, I figured the guy must have had some sort of description when posting a video like that.

I agree with you on the engine part, there are zero signs of any problems before the spin.

Savington 03-02-2011 06:23 PM


Originally Posted by kenzo42 (Post 695908)

Tow hooks...good or bad?

Tow hooks: Required

l_bader 03-02-2011 06:52 PM

Listen at 2:37. You hear a small pop-click as he is passing the Porsche. I expect that is when the failure happened...

Braineack 03-11-2011 10:13 AM

1 Attachment(s)
Failure at the oil filter caused the accident.


*UPDATE*

I started tearing the car down today.The culprit for the oil?The oil filter gasket. For shits and giggles, I tried to start the car when unloading it.It started right up,but was puking oil, so I killed it. The puddle of oil was right below the filter,so I grabbed it and was able to turn it about a half turn. I spun it back off, and the gasket was almost doubled over on itself. I'm not sure if maybe I didn't put enough oil on the gasket and maybe it "grabbed" the block when I installed it,stretching the gasket. Maybe that led to it eventually blowing out that section?I'm very ---- about the prep of the car,and I installed this filter the day before the event(last sunday), and I distinctly remember tightening it correctly. There was still almost one quart of oil left in the pan,so I dumped over 4.5 quarts on the track.The coolant I'd seen was from a hose that got pinched and busted from the impact.

I know this was a freak deal,but I'm still going to start safety wiring the filter.
Oil filter(gasket has returned to it's normal position:

http://i81.photobucket.com/albums/j2...n/DSC04274.jpg

car doesn't look that bad:

Attachment 190483

curly 03-11-2011 12:00 PM

Doesn't look like anything under the body work got damaged. Just fenders, bumper, windshield, and remove the air bags.

How do you safety wire an oil filter? I don't think anyone does that. I'd first investigate installation procedure and the quality of my filter.

BenR 03-11-2011 12:36 PM


Originally Posted by curly (Post 700203)
Doesn't look like anything under the body work got damaged. Just fenders, bumper, windshield, and remove the air bags.

How do you safety wire an oil filter? I don't think anyone does that. I'd first investigate installation procedure and the quality of my filter.

http://www.knfilters.com/oilfilter.htm

Joe_Mama 03-13-2011 09:19 PM


Originally Posted by curly (Post 700203)

How do you safety wire an oil filter? I don't think anyone does that. I'd first investigate installation procedure and the quality of my filter.

Only done it on motorcycles. We are required to put a large hose clamp on the filter then wire the hose clamp to a nearby location on the motor.

stinkycheezmonky 05-16-2011 10:59 AM

I realize this is a bit old, but on the odd chance the tow hook helped with the damage (I doubt it, honestly), just another good reason to use a soft tow strap instead of the hard tow hook.

ThePass 05-16-2011 05:02 PM

+1 for the soft tow straps. Easier to make them work for a custom setup if you don't have the typical mounting points too.
I doubt the hook had any major role in the amount of damage. The guy hit a barrier at like 90 mph. The cause of the damage is not a mystery.

Laur3ns 08-24-2011 05:27 PM


Originally Posted by ThePass (Post 727913)
+1 for the soft tow straps. Easier to make them work for a custom setup if you don't have the typical mounting points too.
I doubt the hook had any major role in the amount of damage. The guy hit a barrier at like 90 mph. The cause of the damage is not a mystery.

+2 for tow straps (front+rear). Saves weight too.
My engine builder safety wires my oil filter every time using a hose clamp + safety wire.


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