rollbar to windshield header brace
 

Hmm, now I want a 'V' version of this brace, 2 points of the V on the header, one point in the middle of the rollbar:

https://www.miataturbo.net/attachmen...ine=1366645549

(Note I'm not saying this will substitute for a cage, I just want a more rigid chassis. Yes I have the butterfly, door bars et al already)

I've always wondered what, if anything, this would do for rigidity.

I assumed it simply 'cured' some chassis NHV but added little in terms of structure/rigidity. I'd be concerned about windshield longevity.

-Zach

Makes my head hurt just looking at it.

Helment mandatory.

Bicycle helmet.

Here's my V brace idea

https://www.miataturbo.net/attachmen...1&d=1366828758

I cannot imagine how that would possibly be a better alternative to a full on cage.

Actually it looks like itd be the worst of both worlds.

+1

For me, the probability of having a 5 mph accident on the way to the track where my head strikes a bar like that and I die is infinitely higher than the probability of rolling the car on track where that bar would make the difference.

It is NOT a substitute for a cage, nor something to improve rollover protection.
It is to reduce NVH.

The rollbar behind the driver's head is MUCH closer than the V-bar.

I get what you're saying, but think that's a bit over the top for NVH to be honest.
You're basically running almost a full cage, with all the dangers that come with driving it on the street without a helmet, but without all the benefits.
I'm surprised you're still unhappy with frame rails, door bars, and a roll bar in an nb.

But I dunno much more on this since I don't even have a roll bar, so I'll just bow out of the conversation lol

Forgive my noobness Jason, but I assume you have already seam welded the chassis up? I don't feel like researching 8 years of posts to find out.

Related (especially because Jason posted in it) but you guys should read this thread on the same (sortof) subject.

Windshield header to rear cockpit cross brace - MX-5 Miata Forum

It's worth it, trust me.

Seam welded door openings only. I seriously doubt more seam welding will be anywhere as good as my suggested V-bar.

Because drove Boxster.

Has benefit of NVH reduction. Realistically any increased risk is still lower than riding a motorcycle. Yet if someone suggests this kind of bar, lots of people say "too dangerous", but not if I say "I just bought a Gixxer".

is the brace bolted to the windshield frame?...is this a custom job?...need to be able to carry surfboards on the roof with the top down and i think this would be my best route.