Rollbar & new Shocks

Discussions relating to MX5 Tyre choice, Wheels, Brakes Suspension components and other items to keep you going around corners, stuck to the ground or stopping on a dime.

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archie
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Rollbar & new Shocks

Post by archie » Tue Dec 02, 2014 4:18 pm

Hey all, how's it going?

Can someone give me some recommendations regarding a half-cage fabricator? From my research, just the 4-point hoop behind the seat, and preferably cheap :)

I've recently bought a fairly rough NA6C and I'm looking to do some track days/gymkhanas. Learn me some driving skills. When's the next event?

Also, I need new shocks, but at least they don't need to be fabricated!

Cheers,

Arch

evel
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Post by evel » Tue Dec 02, 2014 5:01 pm

Afternoon Mate, Welcome to the forums.

If your in Auckland Chubb Racing ( http://www.rollcage.co.nz/ ) are the go, but also DKM Fab http://www.dkmfabrication.co.nz/ and TTT automotive https://www.facebook.com/TTTAuto are both choice as fabrication spots. Im not sure on price as I dont actually have a roll bar but i think they normally set you back around $500 but im sure someone who actually has a bar can shed some light.

Shocks, look for some OEM Bilsteins for a cheep but pretty good set up. If you want to spend a bit more you can get some new bilsteins and pick your spring rate and have the shocks valved, but again I cheated and just got some adjustable coilovers so dont actually have any experience.

You also may want to look at some new wheels, like 15x8's but not zero fucking offset maybe more around the 45-35 zone, and some quality tyres. They make the world of difference.

:D
'94 S-Special 1800 in BLACK
Flares and 225/45 Semi Slicks.

evel
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Post by evel » Tue Dec 02, 2014 5:06 pm

also
This
Image
= BAD!!

This
Image
= GOOD
'94 S-Special 1800 in BLACK
Flares and 225/45 Semi Slicks.

JaredH
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Tentative sideways sliding....
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Post by JaredH » Tue Dec 02, 2014 5:48 pm

Chubb racing quoted me $700 for a weld in half cage to MSNZ standards, haven't got around to going ahead with it yet.

warrior
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Post by warrior » Tue Dec 02, 2014 7:09 pm

True roll bars come up on trade me sometimes around $400-$500. As for shocks, drive other peoples cars. Dont go buying great track shocks that you use 1% of the time that are terrible for the road 99% of the time.
warrior

warrior
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Post by warrior » Tue Dec 02, 2014 7:13 pm

Btw evel any pics of your car with flares and new wheels?
warrior

SkilletKid
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Post by SkilletKid » Tue Dec 02, 2014 9:04 pm

If you want a data point, I have 500 lbs front springs and 400 lbs rear springs on valved for me Bilsteins. Plenty comfortable for my NA6, but some passengers sometimes complain on potholes. I have one of the Racing Beat hollow front bars as well.

400f/~300r would probably be best for road only use with the occasional track day/autocross/gymkhana.

If you got the choose your own springs and valve a Bilstein route, get your car weighed as it will give Racelign (or whoever you use for the valving work) something to work from (with you in the car and half tank of petrol).

For more DIY stuff on this same route, see this thread:

http://www.miataturbo.net/suspension-br ... ead-78451/
"Yes, you got that, 16 years of [MX5] ownership and you too can become the Obi-wan Kenobi of not giving a s**t." - Moti

built4speed
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Post by built4speed » Tue Dec 02, 2014 9:41 pm

MX5 cup cars run 500-550lb front 300-350lb rear as a reference. Also dont take what you read about setups from the usa as a good setup here.. there tracks are a lot flatter than most of ours.

SkilletKid
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Post by SkilletKid » Tue Dec 02, 2014 9:57 pm

Sonoma and Laguna Seca look plenty bumpy. But then again, Puke is a dinosaur =P
"Yes, you got that, 16 years of [MX5] ownership and you too can become the Obi-wan Kenobi of not giving a s**t." - Moti

built4speed
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Post by built4speed » Tue Dec 02, 2014 10:09 pm

Manfeild is really bad in places. I hit the bump stops going down the front strait lol

evel
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Post by evel » Tue Dec 02, 2014 10:11 pm

warrior wrote:Btw evel any pics of your car with flares and new wheels?
Heres a smash together of most of my photos of her.
http://s1090.photobucket.com/user/evel1234/library/Eri
'94 S-Special 1800 in BLACK
Flares and 225/45 Semi Slicks.

4A-GE
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Post by 4A-GE » Tue Dec 02, 2014 10:52 pm

Bilsteins + dobis = jarring.
Kyb's + dobis = great.
Cusco coilovers = better than great.

SkilletKid
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Post by SkilletKid » Tue Dec 02, 2014 11:25 pm

built4speed wrote:Manfeild is really bad in places. I hit the bump stops going down the front strait lol
That's what I've heard from some of the guys at work too. Some of the bumps apparently set up some weird ass harmonics.
"Yes, you got that, 16 years of [MX5] ownership and you too can become the Obi-wan Kenobi of not giving a s**t." - Moti

Angreal
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Post by Angreal » Wed Dec 03, 2014 10:07 am

Damn all these imperial numbers you guys are using

marcellarius
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Post by marcellarius » Wed Dec 03, 2014 12:28 pm

Divide by 56 to convert lb/inch to kgf/mm i.e. 500lb/inch springs are ~9kgf/mm :)

4A-GE
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Post by 4A-GE » Wed Dec 03, 2014 7:17 pm

Angreal wrote:Damn all these imperial numbers you guys are using
This

built4speed
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Post by built4speed » Thu Dec 04, 2014 12:50 pm

Most places that set cars up, sell the springs still work in lb

archie
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Post by archie » Mon Dec 08, 2014 4:17 pm

Alright Mx-5ers, I've started. I forked out for some used Bilsteins, chucked them in over the weekend, and am now in desperate need of an alignment.

Next on shopping list is tyres, ain't that an age-old question!

evel
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Post by evel » Mon Dec 08, 2014 4:46 pm

alot of mx5ers are keen on their Bridgestone RE002. They come in a 195/50 and also 205/50
'94 S-Special 1800 in BLACK
Flares and 225/45 Semi Slicks.

BRM
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Post by BRM » Fri Dec 19, 2014 11:46 pm

Bit late posting to this..
But also try Quest Fabrication in silverdale.

I've seen roll bars/cages from all parties and quest is most defiantly the best quality.

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