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post #1 of 104 (permalink) Old 10-21-2011, 10:56 AM Thread Starter
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November 2011 SCCA Fastracks for Solo

Nov Fastrack <<-Click

Highlights:
Stock - any single sway bar rule will happen

STF - Catalytic Converter rule now includes all ST classes (meaning the MZ3 can now change the stock header that has an integrated cat...2 cats can now be replaced by 1 and it can be a high flow aftermarket unit); ECU piggyback system rules changed to "no splicing" (must be plug and play); all ST classes included in brakes rule (2-piece rotors and change calipers).

STX - MS3 is definitely in

DSP/FSP - spoiler allowance(no wings); Focus SVT moved to FSP

SMF - change to subframe rule

I think that's all the Mazda3/Speed3 relevant stuff.

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post #2 of 104 (permalink) Old 10-21-2011, 11:32 AM
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Re: November 2011 SCCA Fastracks for Solo

Regarding the "may change either sway bar" instead of only a front rule change, that then begs the question what size REAR sway
bar for a car running SCCA H Stock would be the ultimate choice?

Feel free to offer specific suggestions as to manufacturers also.......

Stock just got a whole lot more interesting.

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post #3 of 104 (permalink) Old 10-21-2011, 11:56 AM
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Re: November 2011 SCCA Fastracks for Solo

I had this discussion with a couple of people here in New England Region that know a lot more about suspension tuning and weight transfer than I do.

Consensus:

Stock bar will be fine.

I don't have the ability to take what they told me in person and translate it to words here,but considering both of them have multiple Nationals Trophies, I'm going with their opinion.

Actually - I can paraphrase - in Stock - maximize front grip.

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post #4 of 104 (permalink) Old 10-21-2011, 11:59 AM Thread Starter
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Re: November 2011 SCCA Fastracks for Solo

The sway bar very well could change the landscape of a class or two.

As far as a rear sway bar for a Mazda3/Speed3, I would say go with something adjustable...Tri-Point, Hotchkis, Cobb...etc.

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post #5 of 104 (permalink) Old 10-21-2011, 01:13 PM
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Re: November 2011 SCCA Fastracks for Solo

[quote author=ClemsonMZ3 link=topic=199976.msg4134525#msg4134525 date=1319212780]Tri-Point.
[/quote]


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post #6 of 104 (permalink) Old 10-21-2011, 04:01 PM
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Re: November 2011 SCCA Fastracks for Solo

Have you tried the hotchkis sway bars yet tiger? I'm completely non-bias and just want whats better from a performance stand point since I will be competing in some NASA Time Attack events next year...Just curious why you went tri-point?


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post #7 of 104 (permalink) Old 10-21-2011, 04:20 PM
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Re: November 2011 SCCA Fastracks for Solo

[quote author=Birdfeather link=topic=199976.msg4134645#msg4134645 date=1319227267]
Have you tried the hotchkis sway bars yet tiger? I'm completely non-bias and just want whats better from a performance stand point since I will be competing in some NASA Time Attack events next year...Just curious why you went tri-point?
[/quote]

I went from Hotchkis to Tri-Point. TP is stiffer and have more rotation on throttle, also plants the front more than it did when I had the Hotchkis.


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post #8 of 104 (permalink) Old 10-21-2011, 04:46 PM
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Re: November 2011 SCCA Fastracks for Solo

As far as an SCCA Stock application, is this example of rotation experienced with the stock front bar, or a matched pair of F&R bars?

What I need would be something that will work using a stock front bar.

I see after a quick search (some are one position, some two position, and some are three position):

Barone RSB ...........593#/718#/901#
Tripoint RSB:..........750/825/1000
Cobb RSB: .............720/910
Hotchkis.................445/320
Racing Beat............738
Corksport...............670/790/958 (MS3)
Corksport...............353/480/638 (MZ3)

So how much rear bar is too much..........with that stock front bar? There's got to be a point of diminishing return. :shock:

Another reason I favor an adjustable rear bar.

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post #9 of 104 (permalink) Old 10-21-2011, 05:35 PM
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Re: November 2011 SCCA Fastracks for Solo

[quote author=tigermack link=topic=199976.msg4134651#msg4134651 date=1319228445]
[quote author=Birdfeather link=topic=199976.msg4134645#msg4134645 date=1319227267]
Have you tried the hotchkis sway bars yet tiger? I'm completely non-bias and just want whats better from a performance stand point since I will be competing in some NASA Time Attack events next year...Just curious why you went tri-point?
[/quote]

I went from Hotchkis to Tri-Point. TP is stiffer and have more rotation on throttle, also plants the front more than it did when I had the Hotchkis.
[/quote]


Awesome...ya I'm definitely going to need to keep the front planted as well as I can....Just out of curiosity have you tried to hotchkis FSB with the TP rsb...I noticed you're using the mazdaspeed FSB(oem?) paired with the TP rsb....Just curious why your using the MS when it is less stiff then hotckis front sway bar....


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post #10 of 104 (permalink) Old 10-21-2011, 05:40 PM
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Re: November 2011 SCCA Fastracks for Solo

[quote author=Birdfeather link=topic=199976.msg4134708#msg4134708 date=1319232942]
[quote author=tigermack link=topic=199976.msg4134651#msg4134651 date=1319228445]
[quote author=Birdfeather link=topic=199976.msg4134645#msg4134645 date=1319227267]
Have you tried the hotchkis sway bars yet tiger? I'm completely non-bias and just want whats better from a performance stand point since I will be competing in some NASA Time Attack events next year...Just curious why you went tri-point?
[/quote]

I went from Hotchkis to Tri-Point. TP is stiffer and have more rotation on throttle, also plants the front more than it did when I had the Hotchkis.
[/quote]

Awesome...ya I'm definitely going to need to keep the front planted as well as I can....Just out of curiosity have you tried to hotchkis FSB with the TP rsb...I noticed you're using the mazdaspeed FSB(oem?) paired with the TP rsb....Just curious why your using the MS when it is less stiff then hotckis front sway bar....
[/quote]

I went to the MS3 bar because I was a ricer and always thought stiffer is better. As I gain my experience, I realize that's what was causing the wheel spin even with my LSD. I took it off and went back to stock, huge difference but I was still not satisfied. I went to NO FSB and made a HUGE difference, I couldn't be any happier. However, I had to go up in spring rate to make up the lack of FSB, it increased body roll and cause the front bite down too much. Now it's great... I'd never go back to FSB again.


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