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Sideways on ripple strip - damaged chassis?

Posted: Sun Dec 27, 2015 12:35 pm
by The Green Goblin
Hey Gents,

recently attended a WP track day in my 02 NB, long story short - pushed a little too hard & ended up loosing control & going over a ripple strip sideways. my car is not ridiculously low, but low enough to make contact with the raised surface, being the ripple strip.

i have video footage of this but in crappy format that doesn't allow me to edit etc, looking over it - you can definitely hear when impact occurs, it was somewhat violent - in that it moved the camera mount when the car made contact. I also recall looking towards the rear of the car as it was in motion, & seeing sparks fly up when contact was made (although i was packing it, i was also relaxed in a weird sort of way). anyways, when i jacked up the car & got under it this is what i was able to see:

side view
Image

directly underneath
Image

under car, scratched underside & sheared bolt head
Image

these were the only bits of damage i was able to see, there doesn't appear to be any other bent items besides the chassis rail as pictured. after it happened, the car stalled (as i steered it onto grass), had to pull the keys out to turn it on, engine light was on & remained on for a couple of hours. when i drove back to pits, i felt no weird vibrations, steering was not compromised, no weird noises etc.. in other words, there were no structural issues.

should i be worried about this? is this a common occurrence? have i defiled my beloved..?

cheers,
Jas.

Re: Sideways on ripple strip - damaged chassis?

Posted: Sun Dec 27, 2015 1:04 pm
by Lokiel
I think you got REALLY lucky and it just looks superficial. Any scraping metal will generate sparks and contacts inside the car always seem louder/worse than if you witnessed them from outside the car, the noise gets amplified massively inside the car.

Might be a good time to think about FM Frame Rails if you're concerned about the bent chassis rail though it doesn't look damaged much (they're great for jacking up the car too - stick the jack in the middle and you can change both wheels/pads on that side).

Re: Sideways on ripple strip - damaged chassis?

Posted: Sun Dec 27, 2015 5:01 pm
by bruce
And this is why I don't do track days anymore.

Re: Sideways on ripple strip - damaged chassis?

Posted: Sun Dec 27, 2015 5:09 pm
by hamx5ter
+1 for the frame rails..

Not sure that frame rails are strong enough to jack up the entire side of the car though.. I'd love it if they could, but I was given to understand they would bend

Lokiel wrote:I think you got REALLY lucky and it just looks superficial. Any scraping metal will generate sparks and contacts inside the car always seem louder/worse than if you witnessed them from outside the car, the noise gets amplified massively inside the car.

Might be a good time to think about FM Frame Rails if you're concerned about the bent chassis rail though it doesn't look damaged much (they're great for jacking up the car too - stick the jack in the middle and you can change both wheels/pads on that side).

Re: Sideways on ripple strip - damaged chassis?

Posted: Sun Dec 27, 2015 5:14 pm
by The Green Goblin
Lokiel wrote:I think you got REALLY lucky and it just looks superficial. Any scraping metal will generate sparks and contacts inside the car always seem louder/worse than if you witnessed them from outside the car, the noise gets amplified massively inside the car.

Might be a good time to think about FM Frame Rails if you're concerned about the bent chassis rail though it doesn't look damaged much (they're great for jacking up the car too - stick the jack in the middle and you can change both wheels/pads on that side).


yes as it happened i thought, why the hell am i doing this to myself/car?! but thats part of it i guess.. i wanted a track car, so this is it.

re the FM rails, is the purpose of these purely for reinforcement / protection? do they brace the car in anyway? what is the correct name given to the area that i have bent? (where you place scissor jacks / jack stands), i dont think there is any form of protection for this area?

ta.

Re: Sideways on ripple strip - damaged chassis?

Posted: Sun Dec 27, 2015 5:27 pm
by Nevyn72
The Green Goblin wrote:what is the correct name given to the area that i have bent? (where you place scissor jacks / jack stands)

Pinch weld. :wink:

Re: Sideways on ripple strip - damaged chassis?

Posted: Sun Dec 27, 2015 6:46 pm
by mx5002
Most mx5s have worse damage than that from speed humps :lol:

Nothing to worry about.

Re: Sideways on ripple strip - damaged chassis?

Posted: Sun Dec 27, 2015 7:09 pm
by NitroDann
It's completely fine. Don't stress.

Re: Sideways on ripple strip - damaged chassis?

Posted: Sun Dec 27, 2015 7:39 pm
by project.r.racing
frame rail has no dents, so it is fine. the pinch welds are only for holding the panels on. use a rubber mallet and bang it back into place.

most of my lowered cars have had similar damage to them at some stage in their lifetime's.

Re: Sideways on ripple strip - damaged chassis?

Posted: Sun Dec 27, 2015 8:13 pm
by The Green Goblin
Thanks gents, as you can tell, I'm a tad precious with it.

Can one recommend a reputable place to purchase frame rails?

Ta.

Re: Sideways on ripple strip - damaged chassis?

Posted: Sun Dec 27, 2015 8:18 pm
by beavis
I've done similar things in a few mx5's... T1 at Sandown, T9 at Winton...
It's fine. Just superficial. Don't worry about it. Just keep practicing your skills on track.
I wouldn't bother buying bolt on frame rail braces.