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Old 11-30-2007, 11:39 AM   #1
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Does anyone have feedback/thoughts on these? http://www.bossfrog.biz/frog%20arms.htm Seems simple enough that I can make something similiar (now that I have a welder ).
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Old 11-30-2007, 12:28 PM   #2
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I'm sure they add chassis rigidity. But I wonder who is going to buy these before all the other things there are to spend money on. I'd say it's a very narrow market- build on request perhaps?
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Old 11-30-2007, 12:30 PM   #3
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just make your own...how hard can it be?
i would do this if it was very cheap, not otherwise
what do you plan on using material wise? Al? SS?
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Old 11-30-2007, 12:33 PM   #4
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I wouldn't remove my fenders for a mod like that unless it was a dedicated track car. They'd be simple enough to build yourself. Long as you have access to some 1/4 to 3/8 steel or you can weld aluminum. You could even make the ribs bolt on so you wouldn't have to weld anything if you used 90* angle stock.
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Old 11-30-2007, 02:00 PM   #5
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I was planning to use mild steel, nothing fancy. And it is going to be a dedicated track car. I was thinking probably wouldn't need that big flat part with the holes if I just took some 90* angle and welded them in a "Y" shape.

sorry if you misunderstood, my intention isn't to build for others, just something similiar for myself. My question was if bracing this area was worth the trouble. I'm sure it couldn't hurt...
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Old 11-30-2007, 02:10 PM   #6
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since its a track car only, do you have the seams welded yet? that would help more
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Old 11-30-2007, 02:23 PM   #7
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similar bracing has been used on other vehicles and made by companies like gtspec and cusco...in those cases, they are simply referred to as fender braces...just remember that braces were meant to increase rigidity and stiffen chassis...nothing more...in most cases, the extra bracing leads to alot more creaking noises...
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Old 11-30-2007, 02:26 PM   #8
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I saw a a set of these before that used pipe instead of flat stock, not sure if they were for a Miata though.

I'm no expert, but if you don't use that big flat part with the holes in it won't the flat stock just flex? I think the pipe would be stronger without the flat part.
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Old 11-30-2007, 02:47 PM   #9
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no, it adds more resistance therefore it does do its job and reduces overall flex
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Old 11-30-2007, 03:07 PM   #10
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Quote:
Originally Posted by paperchasin View Post
...in most cases, the extra bracing leads to alot more creaking noises...
And if there was less flexing, how would it add creaking noise?

Quote:
Originally Posted by miataspeed1point6 View Post
..I'm no expert, but if you don't use that big flat part with the holes in it won't the flat stock just flex? I think the pipe would be stronger without the flat part.
Going to use 90* angle not flat stock.


Quote:
Originally Posted by whaaamx5 View Post
since its a track car only, do you have the seams welded yet? that would help more
no i haven't welded the seams yet, but i think i'll incorporate that into this project. Is it basicly all the body seams that are just spot welded?..
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Old 11-30-2007, 03:15 PM   #11
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So a search on m.net for seam welding. There are diagrams and writeups.
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Old 11-30-2007, 03:25 PM   #12
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[quote=MiaTurbo;179812]And if there was less flexing, how would it add creaking noise?

If you make one area more rigid, other areas will flex more, and they will creak more.

From what I've gathered, use aluminum if your trying to make something rigid. Two parts both the same weights, the allumium part will be more rigid.
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Old 11-30-2007, 07:47 PM   #13
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Things like that are big in the Impreza world. Everyone and their mother makes one or a knock off of someone else's.
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