[DeTomaso] Rear camber brace

[Ken Green]

Corey,
 
    What I meant is that a member in compression will tend to buckle at any weak point near the center.
 
Ken

From: Corey Price <coreyjprice at gmail.com>
To: detomaso at realbig.com 
Sent: Thursday, April 5, 2012 12:24 PM
Subject: Re: [DeTomaso] Rear camber brace

The article I mentioned in my blog post is from Goran.  Great stuff, and thank you, Ken, for mentioning his website. I attempted to put the information from Goran's article and my own opinions into the context of available chassis braces from vendors in my blog. 

Ken,

Not sure what you mean about the adjustable threaded rod being a weak point, but I would agree that it might be a weak point if the system isn't triangulated and has some induced flexure instead of simple idealized truss action (i.e. all truss elements are axially loaded and no bending of individual elements occurs).

Asa Jay,

Some pictures are on my blog of the two-piece system.  I will update the blog with other brace pictures.

Corey



On Apr 5, 2012, at 12:50 PM, Ken Green <kenn_green at yahoo.com> wrote:

> I've never felt real good about the turnbuckles in the middle of the braces.  It seems like a bad place to put a weak point.  I guess if the brace is big enough it wouldn't matter, but some people (e.g., John Taphorn) have used smaller (lighter) braces with the threaded adjusters at the ends.
>  
> I assume what we are trying to do is add support to the control arm and shock mounting points?
>  
> For those who haven't looked, Goran has some interesting analysis of body flex on his web site:  http://hem.passagen.se/hemipanter/  it's about 1/3 of the way through his web site.
>  
> Ken
> 
> From: Corey Price <coreyjprice at gmail.com>
> To: detomaso at realbig.com 
> Sent: Thursday, April 5, 2012 10:31 AM
> Subject: [DeTomaso] Rear camber brace
> 
> I discuss Pantera chassis braces in general in this blog post:
> 
> http://pantera1998.blogspot.com/2012/01/chassis-braces.html
> 
> It isn't the final say and I'm open for other opinions.  The rear wheelhouse camber bar and lower aftermarket brace with attempted triangulation is, in my opinion, the best part of the common 4-piece chassis brace kits.  I have Larry Stock's two-piece kit, but wish that the aftermarket wheelhouse "truss" camber brace was available separately from the other vendors.  Bob's point about sheet metal flex at the brace connections is valid though, and echoed by some vendors.  Other than Larry, I've kept the vendor names out of my discussion as best as possible to be polite and as respectful as possible.
> 
> Corey
> 
> 
> 
> On Apr 5, 2012, at 9:14 AM, RCBSONS1 at aol.com wrote:
> 
> > I have the Byers/Hall set of braces on my car
> > The upper rear truss really gets some action as 
> > it was actually trying to pull the bolts thru the sheetmetal
> > I had to weld the tabs in with some bracing behind
> > This happened after trying to autocross the car.
> > A lot of moving around back there with Cheater Slicks
> > 
> > Now it slightly cracks the Bondo used when the engine
> > bay was smoothed and painted... I try not to Autocross
> > the car too much now so the cracking will stay at a 
> > minimum.  I often ask myself do I want it to look pretty
> > or go fast???
> > 
> > Bob Benson
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