testing water on group buy door bars - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 09-17-2009, 06:04 PM   #21
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Im in for fabing the sleve. I got a good idea of what they do to accept the bar then goes to the floor.
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Old 09-17-2009, 06:11 PM   #22
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like this i think?
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Old 09-19-2009, 08:11 PM   #23
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So OP, what's the word?
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Old 09-20-2009, 12:23 PM   #24
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Quote:
Originally Posted by kenzo42 View Post
So OP, what's the word?
they are so cheap through kirk racing, why dont u just call them and order some.
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Old 09-20-2009, 05:26 PM   #25
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Quote:
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they are so cheap through kirk racing, why dont u just call them and order some.
they are priced like that with a cage; not a universal kit or whatever.
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Old 09-20-2009, 06:57 PM   #26
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how much more stiffening do i need?

frog arms, rollbar, frame rails, rear cannon brace.

seam stitch welds...
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Old 09-24-2009, 11:38 PM   #27
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So it looks like there's enoug interest in this. I'm in the process of selling my current truck and getting a miata, which i need to make the bars so that they fit perfect. Second design or first shouldnt be a problem. Hopefully I will have a car within the next few weeks and wil get on making these asap.
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Old 10-15-2009, 03:15 AM   #28
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Dunno whether the doorbar thing got anywhere. If not, here's another door bar concept that has some merit.

It's from some JDMmadtiteyo website, a design from a million years ago that nobody's thought to copy yet. These would be less intrusive than the others that have pictured elsewhere in the thread:




Version 2, apparently:



You get the idea.

Anyway, the ones pictured here appear to be some kind of extruded aluminum. Really, you'd want cheaper/stiffer rectangle-section steel, and you'd definitely want to tie the two triangles together so there's no unsupported section in the middle. Plus make the footplates large...

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Old 10-20-2009, 10:40 PM   #29
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Id be up for these at 200bucks, as long as they fit my NA, and wouldnt interfere with 5pt harnesses.

keep us posted.
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Old 11-04-2009, 01:57 AM   #30
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waiting, do want!
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Old 11-04-2009, 08:53 AM   #31
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Quote:
Originally Posted by tyson87 View Post
like this i think?
If that is the way they do it, I would not want them unless the door bar attachment was VERY RIGIDLY attached to the bottom roll bar bracket, like with a huge, tight fitting, large bolt. Or welding would work too. If there is any movement at that joint, it will not stiffen the chassis as well.

I think they have the right idea on the shape of the door bar itself, but why not just attach it to the rear panel (behind the seat) like Hard Dog does it? They use a plate that is drilled to match the roll bar mount; they share the same bolts.

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Old 11-09-2009, 02:14 AM   #32
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These ever going to get made?
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Old 11-09-2009, 02:37 AM   #33
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Sorry it's taken me a while to respond here. I've just been so busy now since getting the car. Now I'm ready to start making these, should have some prototypes done next week, then I can start shipping them out. Planning on doing the version with two bends that has the bar running parralel with the floor. I also need to figure out what you guys want as far as hardware coming with it and paint?
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Old 11-09-2009, 02:56 AM   #34
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If it keeps the cost down I recommend sending them unfinished.
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Old 11-09-2009, 11:11 PM   #35
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Alright so these are for sure happening, and by the 23 of november i will have some ready to be shipped. I've decided to go with the second design posted, it warranted more interest. They are going to be for NA cars, as thats what i have to build off of, and does anyone have pictures of where the bethania garage bars are mounted on the floor? I'll post the build pictures once i get them started, next week sometime. thanks guys
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Old 11-09-2009, 11:22 PM   #36
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you guys are suicidal... they dont do ****!
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Old 11-10-2009, 12:58 AM   #37
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I'll be in for these at $200 shipped if they work with HD.
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Old 11-10-2009, 01:25 AM   #38
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those are pretty slick, too bad my bucket seats are so damn wide :[
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Old 11-10-2009, 09:52 AM   #39
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I have the Harddog door bars and drive it every day with no problems what so ever. As for it not destroying your leg in a side impact have you not looked on Harddogs crash pictures? Comparison is no footwell and 3/4 footwell with door bars. If you can crash and wreck the door bars to crush your legs you are doing 130+ I'd guess
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Old 11-21-2009, 08:26 PM   #40
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I'm working one getting these made right now, it's just taking longer to expected to get the bending die from the company i bought it from. Just to clarify, the bethania bars DO need holes drilled in the floor and behind the seat to mount?
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