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Topic Review (Newest First)
05-19-2010 11:36 AM
SpeedOften
Quote:
Originally Posted by Auto-X-ZTS View Post
Leo, I am sure, as do the other racers, inspect their cars much more thoroughly than most street driven cars/drivers...but I do agree that stiff springs helps mitigate the risk. They also use a bar that is about 60% less stiff than the one you do--just sayin'. Look at that photo of the ripped out mounts--that should give you a pretty good indication of the forces involved here. Corrosion or not--that is not a 'normal' incident.

Keep a close eye on things, please, and be careful--all I am sayin' again, is that I don't want to see you or anyone hurt as a result of using that large of a bar...
I am careful - every two or so weeks when I swap and rotate my wheels for the next autocross.

Despite LCR using a bar that is 60% less stiff, very few people put as much stress on their daily drivers as the car in the picture I posted.
05-19-2010 04:15 AM
Blackcatn2o
Quote:
Originally Posted by Auto-X-ZTS View Post
Leo, I am sure, as do the other racers, inspect their cars much more thoroughly than most street driven cars/drivers...but I do agree that stiff springs helps mitigate the risk. They also use a bar that is about 60% less stiff than the one you do--just sayin'. Look at that photo of the ripped out mounts--that should give you a pretty good indication of the forces involved here. Corrosion or not--that is not a 'normal' incident.

Keep a close eye on things, please, and be careful--all I am sayin' again, is that I don't want to see you or anyone hurt as a result of using that large of a bar...
reasons why i save pictures like this.
05-18-2010 11:07 PM
Auto-X-ZTS Leo, I am sure, as do the other racers, inspect their cars much more thoroughly than most street driven cars/drivers...but I do agree that stiff springs helps mitigate the risk. They also use a bar that is about 60% less stiff than the one you do--just sayin'. Look at that photo of the ripped out mounts--that should give you a pretty good indication of the forces involved here. Corrosion or not--that is not a 'normal' incident.

Keep a close eye on things, please, and be careful--all I am sayin' again, is that I don't want to see you or anyone hurt as a result of using that large of a bar...
05-18-2010 12:08 PM
SpeedOften
Quote:
Originally Posted by Blackcatn2o View Post
this frame came off an SVT running soft springs + the 28.6 bar.

yep a 2002 SVT.. there is also corrosion on that subframe which makes me think it's a bit misleading.

If SVT reinforced LCA's can handle laps upon laps of this:


Then what does that tell you...
05-18-2010 12:01 PM
SpeedOften
Quote:
Originally Posted by Auto-X-ZTS View Post
Searrch LCA Broken in the suspension thread and search LCA in the autocross thread.

There are way more than 3 broken LCA reports. I seem to recall one discussion involving a 2003+ SVT (supposed to have the 'better' LCAs). I *know* that some 2002 SVTs broke. Either way, those were with 24 or 25mm bars. The Steeda bar is 85% stiffer than a 24mm bar. Small weld-on 'band-aid' is not adequate, IMO. Fully bixing the LCA would be more appropriate--but only by someone who *knows* welding.

I keep beating this drum because I don't want to see someone get hurt--or worse.
I searched everywhere you suggested..

I found one thread of an 02 SVT without reinforced LCA's - looks like Ford changed the LCA's halfway through to the reinforced version.
No threads about the reinforced LCA's breaking at all. I found Capaldi stands by their opinion that as long as you have stiff enough springs that the LCA's will not break - they have been running some years with a 25mm bar without any issues.

http://forums.focaljet.com/suspensio...ms-broken.html

And here: http://forums.focaljet.com/road-rall...trol-arms.html

^Hal makes the point that the LCA snapping could be due to over torqing or even a manufacturing defect.

I'll just stand by to this: my car handles great for my driving style and I have had no issues whatsoever in the however many years I have had my suspension the way it is - and only on H&R sport springs.
05-18-2010 11:52 AM
Blackcatn2o this frame came off an SVT running soft springs + the 28.6 bar.

05-18-2010 11:43 AM
Blackcatn2o



05-18-2010 10:45 AM
Auto-X-ZTS Search LCA Broken in the suspension thread and search LCA in the autocross thread.

There are way more than 3 broken LCA reports. I seem to recall one discussion involving a 2003+ SVT (supposed to have the 'better' LCAs). I *know* that some 2002 SVTs broke. Either way, those were with 24 or 25mm bars. The Steeda bar is 85% stiffer than a 24mm bar. Small weld-on 'band-aid' is not adequate, IMO. Fully boxing the LCA would be more appropriate--but only by someone who *knows* welding.

I keep beating this drum because I don't want to see someone get hurt--or worse.
05-18-2010 08:50 AM
SpeedOften
Quote:
Originally Posted by Auto-X-ZTS View Post
You're right--I was off by a MM. 21, not 22 is correct. No--I have not driven a 28mm RSB car, though I have ridden in one. There has been discussion about fractured SVT LCAs on focaljet. The math is the math--and the effect is always the product of the cause. A (big) swaybar by it's very nature impedes the independence of a suspension.
Sarching through FJ, I see a wagon and possibly 3 non SVT's - only references, no actual threads saying "my LCA broke"... Have yet to find one of those on a SVT. I personally know of a set of LCA's on an 05 base model ZX3 that bent but did not break. The above mentioned 05 was a base model that did not come stock with a swaybar. It is now running SVT LCA's and the same 28.6 bar - but with stiffer springs (H&R cup kit). The springs he was running when the LCA's bent were... (let me get back to you forget exactly which model)...
05-17-2010 08:52 PM
Auto-X-ZTS You're right--I was off by a MM. 21, not 22 is correct. No--I have not driven a 28mm RSB car, though I have ridden in one. There has been discussion about fractured SVT LCAs on focaljet. The math is the math--and the effect is always the product of the cause. A (big) swaybar by it's very nature impedes the independence of a suspension.
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