NC oversteering / slipping problem

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Regie
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Re: NC oversteering / slipping problem

Postby Regie » Tue Sep 04, 2018 1:42 pm

bliu6757 wrote:
Regie wrote:
bliu6757 wrote:
JBT wrote: Now I wish there was a LSD and even less body roll.


your car auto aye?



No it’s a 2006 manual nc1

I actually was scrolling the forums this morning and you said in one of the posts that manual nc have lsd??


Sent from my iPhone using Tapatalk


you'll have LSD then :D
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manga_blue
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Re: NC oversteering / slipping problem

Postby manga_blue » Tue Sep 04, 2018 1:50 pm

NitroDann wrote:Replacing coilovers in an mx5 doesnt change anything about the alignment.

Dann

It does if you change ride height. Camber varies with ride height/deflection.
’95 NA8

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bruce
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Re: NC oversteering / slipping problem

Postby bruce » Tue Sep 04, 2018 2:32 pm

That's what I thought. Changing springs/coilovers is unlikely to give you the exact same ride height as before, thus an alignment is required. I suspect a big change in ride height occurred here resulting in alignment being stuffed.
I suspect the coilover instructions would mention an alignment is recommeded after fitting.

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NitroDann
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Re: NC oversteering / slipping problem

Postby NitroDann » Tue Sep 04, 2018 3:18 pm

A typical coilover install will lower the car increasing camber evenly side to side, which affects nothing from most peoples perspectives.

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manga_blue
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Re: NC oversteering / slipping problem

Postby manga_blue » Tue Sep 04, 2018 5:35 pm

NitroDann wrote:A typical coilover install will lower the car increasing camber evenly side to side, which affects nothing from most peoples perspectives.

Dann

Unless you're as obsessive about suspension settings as I am. :wink:

For the other obsessives, here's an example for the ND:
Image
Image
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NitroDann
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Re: NC oversteering / slipping problem

Postby NitroDann » Tue Sep 04, 2018 5:46 pm

1" drop, +0.5* camber, sounds awesome for like...... 99% of people who fit coilovers.

Im not saying youre wrong, you aren't, but I think that "always get an alignment after fitting coilovers to an MX5, because it's good practice" is like "Only buy a car with a full dealer service history, because it's good practice".

It's only good practice if you don't really know what you're looking at/doing.

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speed wrote:If I was to do it again, I wouldn't even consider the supercharger.

Demes
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Re: NC oversteering / slipping problem

Postby Demes » Mon Sep 10, 2018 9:44 pm

I have a NB8A and have just fitted Yellowspeed coilovers with 8/6 springs and these have transformed my car into a car that wheel spins and oversteers badly on tight low speed corners. With the standard suspension and the RE03 tyres I could throw the car into these corners without a sign of oversteer or wheelspin. I have come to the conclusion that this is happening because the yellowspeed coilovers with the correct ride height actually measure 50mm shorter than the original standard shockers. I think taking 50 mm of droop out of the suspension ...what is happening when it is thrown into a tight corner it is actually picking the inside wheel throwing all the weight onto one rear tyre and oversteering and wheel spinning.

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pepejesus
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Re: NC oversteering / slipping problem

Postby pepejesus » Tue Sep 11, 2018 1:55 pm

Yep 8/6 rates on street tyres in an otherwise stock NB (or NA) will tip the balance towards oversteer. At the track, you will notice a lot of people running much higher front spring rates, and with a bigger split front/rear. Eg 12/7.

A much bigger front sway will provide better balance with your rates.

I run 10/6 in my NB SE with stock rear sway and a big hollow front sway. Balance is good.

I had an NA6 previously, went from stock springs/dampers (mild understeer) to coilovers with rates similar to your 8/6 and had oversteer with stock sways.
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