03-29-2008, 05:16 PM
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#1
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Registered User
Join Date: Jan 2007
Location: Depends on the day of the week....
Posts: 1,400
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Claude- That is a very interesting observation. I am installing Che's rear toe arms this week, to correct for camber/toe when lowered, and will let you know how things work for me.
Its true, car manufacturers are touting aluminum components in the suspension heavily these days, and there are improvements to be had by lowering unsprung weight.
Patrick
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03-30-2008, 01:08 PM
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#2
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Registered User
Join Date: Sep 2006
Location: California
Posts: 713
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Quote:
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Originally Posted by bmwm750
Claude- That is a very interesting observation. I am installing Che's rear toe arms this week, to correct for camber/toe when lowered, and will let you know how things work for me.
Its true, car manufacturers are touting aluminum components in the suspension heavily these days, and there are improvements to be had by lowering unsprung weight.
Patrick
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Sounds good Patrick, please update us on before/after feel, and any other notes and thoughts you have regarding the install, fit, feel, quirks, etc.
Thanks!
__________________
http://farm4.static.flickr.com/3420/...90927559_o.jpg
Some stuff for sale: M030 S 24mm front sway bar, M030 base 19.6mm rear sway bar, 996 GT3 OEM Porsche Motorsport front strut mounts monoball "camber plates"
WTB: looking for some 5-7mm spacers with extended bolts
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03-30-2008, 03:14 PM
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#3
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Registered User
Join Date: Jul 2006
Location: lex
Posts: 213
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Quote:
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Originally Posted by bmwm750
there are improvements to be had by lowering unsprung weight.
Patrick
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Not as much as Rotating Unsprung weight... (wheels) but it does help...
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03-31-2008, 09:01 AM
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#4
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Registered User
Join Date: Feb 2005
Location: Seattle is now home!
Posts: 398
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WOW No one and not even a word from the sponsor?
Maybe I will not use these pcs. and just go GT3 control arms and Agency Power parts.
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03-31-2008, 11:07 AM
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#5
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Registered User
Join Date: Jul 2006
Location: Where the Sewer Meets the Sea, CA. USA
Posts: 2,695
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I have the upper track arms, both front and rear and i have to say, that i find it impossible to believe that anyone would be able to notice the car being "Less nimble" with only about 7-12 more lbs. of weight added on the car.
Again i have them on the front and rear of my car and they eliminated the rattling sound and i havent noticed any other new noises as a result of using the track arms.
If you really notice a difference in handling charactoristics, i would check your alignment again.
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03-31-2008, 11:40 AM
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#6
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Registered User
Join Date: Sep 2006
Location: California
Posts: 713
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Quote:
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Originally Posted by CJ_Boxster
I have the upper track arms, both front and rear and i have to say, that i find it impossible to believe that anyone would be able to notice the car being "Less nimble" with only about 7-12 more lbs. of weight added on the car.
Again i have them on the front and rear of my car and they eliminated the rattling sound and i havent noticed any other new noises as a result of using the track arms.
If you really notice a difference in handling charactoristics, i would check your alignment again.
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CJ, yes I did notice a slight difference in the handling characteristics of the car, feeling slightly less nimble. And no, I don't presume it to be from the addition of the 7-12 more lbs of weight added to the car itself, as you say... I could add that with some groceries in my trunk and definitely not notice anything. What I was concerned was about adding that much weight to the suspension itself, which is of course constantly moving.
So, like I said, I don't know if the culprit is the heavier arms adding weight onto the moving suspension, or if the culprit is the need to realign the car, due to the change in suspension, as I don't doubt that my toe, and perhaps even caster are slightly off now. I would try to solve the mystery by getting my alignment done right now, but I have a few more things I plan to do to the suspension and will wait after all the changes to get the alignment.
Does anyone know, from theory or first hand experience, whether adding weight to the suspension with these heavier arms, would cause a slightly slower response and adverse handling characteristics? Perhaps Insite can chime in...
__________________
http://farm4.static.flickr.com/3420/...90927559_o.jpg
Some stuff for sale: M030 S 24mm front sway bar, M030 base 19.6mm rear sway bar, 996 GT3 OEM Porsche Motorsport front strut mounts monoball "camber plates"
WTB: looking for some 5-7mm spacers with extended bolts
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04-01-2008, 07:49 PM
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#7
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Porscheectomy
Join Date: Mar 2006
Location: Seattle Area
Posts: 3,011
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Quote:
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Originally Posted by chaudanova
Does anyone know, from theory or first hand experience, whether adding weight to the suspension with these heavier arms, would cause a slightly slower response and adverse handling characteristics? Perhaps Insite can chime in...
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Here you go
http://en.wikipedia.org/wiki/Unsprung_weight
Basically, the momentum involved with movement of the suspension parts in reaction to road features can work against the desired motion of the suspension, therefore, less mass, less undesired motion. Can you feel an increase in unsprung weight? It depends on the degree of increase. Does it matter? Absolutely. The tradeoff being that lighter parts are typically less resistant to bending or damage, this is definitely the case when comparing steel parts to aluminum ones.
Last edited by blue2000s; 04-01-2008 at 08:07 PM.
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04-01-2008, 08:10 PM
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#8
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Registered User
Join Date: Nov 2006
Location: baton rouge
Posts: 840
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Just to add my .02 I have the Tarrret adjustable rear toe arms. The toe arms seemed lighter than OEM parts. Once I added these I was able to get my lowered suspension into OEM specs. Prior to getting the adjustable toe arms I as changing my rear tires every 5k miles. I have 8k on my rears now and they seem to have plenty of tread left.
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03-31-2008, 11:49 AM
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#9
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Registered User
Join Date: Sep 2006
Location: California
Posts: 713
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Quote:
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Originally Posted by JP-s-in st. louis
WOW No one and not even a word from the sponsor?
Maybe I will not use these pcs. and just go GT3 control arms and Agency Power parts.
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Hey JP-s, the GT3 control arms and agency power parts would be replacing different arms/parts than the arms that Che offers. The "track arm" as everyone here refers to, are the rear trailing arms. The Agency power "dog bone" arms, as far as I know, are for the 996/997, and won't fit the 986, despite what the website says. Correct me if I'm wrong on that, but the rear suspension on the 986 and 996 are different, and I just do not see how one could use the dog bones on a 986.
__________________
http://farm4.static.flickr.com/3420/...90927559_o.jpg
Some stuff for sale: M030 S 24mm front sway bar, M030 base 19.6mm rear sway bar, 996 GT3 OEM Porsche Motorsport front strut mounts monoball "camber plates"
WTB: looking for some 5-7mm spacers with extended bolts
Last edited by chaudanova; 03-31-2008 at 11:52 AM.
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03-31-2008, 01:09 PM
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#10
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Registered User
Join Date: Feb 2005
Location: Seattle is now home!
Posts: 398
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ebay
Porsche 986 Boxster 97-05 Adjustable Rear Track Arms
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Porsche 986 Boxster 97-05 Adjustable Rear Toe Arms
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http://www.agency-power.com/catalog/product_info.php/cPath/58_59/products_id/152
Porsche 996/997 [AP-996-200] $625.00
Agency Power Rear Adj. Control Arms Porsche 996/997
Click to enlarge
Racing is part of every Porsche owner's desire. Going fast is one thing, but giving your car the best handling possible is where you will excel as a driver. Agency Power Industries has developed these adjustable control arms for your Porsche 996 and 997 vehicle. These control arms fit on the rear of your car and help in adjusting camber and toe. In additional to being fully adjustable, these control arms offer increased rigidity from the replacement of the factory urethane bushing with spherical bearing ends. The 6061 CNC Machined arms are anodized in our beautiful brilliant blue color and notched for easy adjustment. Each spherical bearing has CNC machined stainless steel fittings for a secure and safe fit. Control arms are sold in sets of 4 and fit all the 99 and up Porsche 996 and 997 models and 97-04 986 Boxster.
Agency Power Rear Adj. Control Arms Porsche 996/997
Click to enlarge Agency Power Rear Adj. Control Arms Porsche 996/997
Click to enlarge Agency Power Rear Adj. Control Arms Porsche 996/997
Click to enlarge
Agency Power Rear Adj. Control Arms Porsche 996/997
Click to enlarge Agency Power Rear Adj. Control Arms Porsche 996/997
Click to enlarge
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03-31-2008, 01:14 PM
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#11
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Registered User
Join Date: Feb 2005
Location: Seattle is now home!
Posts: 398
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you are right...great more choices..or is that more stuff to buy????
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03-31-2008, 02:23 PM
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#12
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Registered User
Join Date: Sep 2006
Location: California
Posts: 713
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Quote:
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Originally Posted by JP-s-in st. louis
you are right...great more choices..or is that more stuff to buy???? 
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hahaha, a bit of both! Anyone feel free to add to this, as I don't doubt I'm missing a few, though here is what I see as available options as upgrades for the 986 in terms of suspension arms:
- Lower control arms (front & rear) --> GT3 & GT3 CUP lower control arms
- Adjustable rear Toe arms --> Che aka HardRace, TRG, Tarett, & GMG WC toe arms
- Rear Trailing arm, aka Track arm --> Che/HardRace
- Front "Tension Rod" arm --> Che/HardRace
__________________
http://farm4.static.flickr.com/3420/...90927559_o.jpg
Some stuff for sale: M030 S 24mm front sway bar, M030 base 19.6mm rear sway bar, 996 GT3 OEM Porsche Motorsport front strut mounts monoball "camber plates"
WTB: looking for some 5-7mm spacers with extended bolts
Last edited by chaudanova; 03-31-2008 at 02:31 PM.
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