Interesting find on eBay...

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Old Jan 25, 2007 | 05:08 PM
  #16  
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From: 21°18'54.33" N, 158°05'55.47" W
Scott:

Are you guys formulating any ideas how fit a triangulated strut bar? Looks pretty tight in there as well as having anything exposed for a third joint. Or any plans for structural bracing behind the fenderwell as well?
 
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Old Jan 25, 2007 | 05:08 PM
  #17  
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Originally Posted by madchef
No offense, but you sounds exactly like a fresh college grad kid with "I have a degree"-itis.
No offense taken. I graduated with my second degree 10 years ago, I am 31 yo. and have worked in the aerospace engenieering field for about 10 years, of and on.

Originally Posted by madchef
I think all of the strut bar's offered for G35's are mostly for eye candy, seeing how far away from the strut tower you have to make them. But you know, if ppl want to spend $500 on em, then by all means.
You are intitled to your openion, although you seem to be rather close-minded. Why does everyone on these messages boards that has my STB on therer G have oustandinggly rave reviews? Most of the people were pretty skeptical about this brace before they had it installed, but after driving the car, they are all sold on it and are then, firm believers, I myself am still surprised at what a difference these STB's make on these G's.

Originally Posted by madchef
And did you mean chromoly/4130 steel? I used to work on race car frames with my friend, and iirc he was getting it for: 90" for $100...thats a bit different than 12" for $73.
I am sure you can get 4130 for pretty cheap, but it is the special material shape of what I use that makes it expecsive.



Originally Posted by madchef
Don't get me wrong, I'd love to try out one of these bars but the price is just way too high IMHO
I guarantee you wouldn't say that after you tried one, you'd be surprised
 
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Old Jan 25, 2007 | 05:16 PM
  #18  
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Originally Posted by 636Racer
Scott:

Are you guys formulating any ideas how fit a triangulated strut bar? Looks pretty tight in there as well as having anything exposed for a third joint. Or any plans for structural bracing behind the fenderwell as well?
No, no imidiate plans for anymore structural mods as of now, this PITA stb was enough for me right now.
I would be willing to test fit a STB on a TN equipped car and even make the necessary changes to make it fit, if there is anyone local that would wanna help me out.
 
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Old Jan 25, 2007 | 05:22 PM
  #19  
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From: 21°18'54.33" N, 158°05'55.47" W
Damn You. Come Fly To Hawaii!
 
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Old Jan 25, 2007 | 08:08 PM
  #20  
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From: 21°18'54.33" N, 158°05'55.47" W
Originally Posted by wa2good
The ARC bar for these cars is made in an arc-type shape which lends itself to flexing. Common knowledge will tell you that any given material is much more resistant to flexing if it is straight rather than bent in an arc (bow-type) shape. furthmore the ARC bar is made of a titanium blended alloy which is nice and rather light, but a far cry from the aircraft grade 4130 chromolly material formed and shaped (airplane wing shaped) the way the material I use is. I also do not think it should have a hinge type connection right where you would need the most support.
I think the design of the bow is effective. Possibly misunderstood, either by me or from an opposition. I think the mounting design is played out well. Energy from the chassis flex up to the strut mount will take less time to reach the bar. The hinges on the ARC bar would allow for bowing to happen. Without the hinges, that point where the bar meets the mount will be the weakest and will bend, break, or crack if it's welded. When the ARC bar bows, there is an effect to it...that it will reflect the energy off equal force (from reflected from the opposing side) back to it's sources.

In contrast to the VRT design...the mounting is extended and triangulated yet, it looks as though the angles are odd, and lengths are dissimilar. This may stress different polarities, even with equal energy sources opposing each other. If the design intent of the VRT bar is to not flex...this could cause a problem on the mounting and their points. Looking at pictures, it's kinda hard to tell which mount will transfer the energy to the bar before it's opposing mount's energy will meet the other. When the energy between the two finally react against each other...where is that energy focused onto the bar? Is it closer to the Left? Or to the Right? Which ever the mounting location has the most energy transfered onto the bar will render the other side weaker. Maybe if VRT incorporated a bar that would allow flex...allowing energy to distribute itself. With a solid non-flexing bar...one mount will always be stronger than the other. (not too sure if that made sense) Another is where the bar is located. I think VRT has the upper hand on this because it limits the axis where the chassis flexes. While the opposite ends wants to go up and down. It deflects it and go side to side. This is where the solid bar and triangulated mounts shines...still, there is concern of the mounts in the same respect....asdfiubilasubfiubfi, argh I give up. my brain's mush.

Both in mind have intents of connecting the chassis, to make opposite ends work against each other to amplify rigity. Who does it better? It's hard to say. It's just one of those things that you'll just have to wait and see. All the consumer needs to know is "IT WORKS".

I'm just about in the same age bracket as Scott...I'm in the same boat as he is as in having selective memories. I probably lost a few cells writing this. If you guys really want to reinforce your chassis. make reinforcement spot welds to the entire chassis. mix up some two-part structural foam an inject it into your pillars and subframe. I guaranty you guys will feel the difference because my Kung Fu is better than your Kung Fu.
 

Last edited by 636Racer; Jan 25, 2007 at 08:27 PM.
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Old Jan 26, 2007 | 10:10 AM
  #21  
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Originally Posted by wa2good
I see your point.
FYI, there is very little, if any profit margin in there STB's that I make. I use rather expensive material ($73 a foot), and powder coating and fabrication is not cheap. So your whole theory of profit doesn't hold water. I am not making these STB's to get rich, believe me If these were my source of income, I would starve. Hahaha

Gut feeling?..... hahahaha
I hold a mechanical engineering degree, and have an extensive aerospace engineering background. I have designed several structurally reinforced products for several companies that meet or exceed strict government tests for structural rigidity, flexural rigidity, etc.

I am not intending on slamming anyone here. If I see a relatively unsafe product like this one, I feel obligated to call upon it.
Believe me, I have designed much more complex parts than this STB. I asure you that given the length, material rigidity (.090 aircraft grade 4130 chromelly) and the aspect ratio, and the given ratio's and axis's of the mounting points of this braces mounts, ummmm pretty sure that this STB will withstand as much as, if not more lateral G-forces than these vehicles (G35's) will ever see, like 4 times as much.
Thank you for your thought out responce. Though I'd much rather hear about a lot more science and non driving testing being applied then talk of your education level, you have a degree in the engineering field and I respect that.

To advance the discussion and possibly move me from the non interested buyers bench, can you post a picture of your STB unmounted laying on it's side with ever part of the bar in sight? Any thing you want to add to the pic, like arrow's that show from what direction you view forces comming from onto the legs would be fine.
 

Last edited by Gsedan35; Jan 26, 2007 at 10:14 AM.
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Old Jan 26, 2007 | 01:42 PM
  #22  
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From: 21°18'54.33" N, 158°05'55.47" W
Originally Posted by Gsedan35
To advance the discussion and possibly move me from the non interested buyers bench, can you post a picture of your STB unmounted laying on it's side with ever part of the bar in sight? Any thing you want to add to the pic, like arrow's that show from what direction you view forces comming from onto the legs would be fine.
To prove what?

May the force be with you and, always with you. Amen.
 
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Old Jan 27, 2007 | 09:26 PM
  #23  
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you guys may be smart, but you sure can't spell! sorry, i just had to add that in there...
 
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Old Jan 28, 2007 | 01:29 AM
  #24  
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Originally Posted by n1cK
you guys may be smart, but you sure can't spell! sorry, i just had to add that in there...
whoa bah. bumbai you learn lidat. LOL
 
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Old Jan 28, 2007 | 02:04 AM
  #25  
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Originally Posted by 636Racer
To prove what?

May the force be with you and, always with you. Amen.
I'll let you answer that.

My request for imput stands, I've even went out and found the picture.

 
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Old Jan 28, 2007 | 05:58 AM
  #26  
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From: 21°18'54.33" N, 158°05'55.47" W
Originally Posted by Gsedan35
I'll let you answer that.

My request for imput stands, I've even went out and found the picture.

Nah...I'll sit back till I see I the need to jump in the conversation. I just want to know what you're trying to get at.

toodles.
 
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Old Jan 28, 2007 | 11:45 AM
  #27  
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Originally Posted by 636Racer
whoa bah. bumbai you learn lidat. LOL
who lurnd u hao ta spoke?? i think i've successfully added distraction to this all too serious thread

ps-and if any of you found your spelling mistakes, you better not edit them!!
 
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Old Jan 28, 2007 | 12:03 PM
  #28  
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Before i seen scotts post, i was already going to bash this "carbon fiber strut bar". Look at how the thing sits in the engine bay...its a complete P.O.S.! Look at how it connects to the strut mount...it looks as though it is only held on by 2 bolts while the other half of the brace hangs off the side....anyone that designs these thing knows that you should have atleast 3 mounting points.... to prevent hinging (spelling?).

-sean
 
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Old Jan 28, 2007 | 12:14 PM
  #29  
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It also looks like a STB that was taken off of a 350z...and flattend then drilled with holes!

-sean
 
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Old Jan 28, 2007 | 01:58 PM
  #30  
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well, what do you expect for $26?!? i just can't believe that there were 7 bids on it! they must not be members of this forum....or any other forum...
 
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