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Traction Brackets..
Posted: Tue May 05, 2009 12:05 am
by DjSpecter
Well I was looking on TechnoToyTuning.com snf came across the traction brackets and that there 100% bolt in. My question or question's are
1. has anyone had experince with them and can they give and feed back about them?
2. what do they do exactly??
Posted: Tue May 05, 2009 7:16 am
by dr.occa
jason, just refer to the following thread.
4 links.
it may give you an idea of what the traction brackets or meant for.
Re: Traction Brackets..
Posted: Tue May 05, 2009 2:36 pm
by ga_goosh
i havent used them but what they do is change the anti squat by changing the angle of the 4 link lower arm so when the rear end twists it pushes on the chasis. as a result the tires grip more. it is like adding more weight to the rear of tha car with out the weight.
i have a hard time explaining this stuff.
here is a better explination
http://forums.club4ag.com/zerothread?id=13250
chohdog wrote:Traction Brackets:
Lowered AE86's move the original suspension geometry out of alignment. For the same reason roll center adjusters move the lower arms under the front spindle back into place for less "bump steer", traction brackets move the outer rear links down closer to their original position to apply downward force on acceleration, and any downward force for the rear axles increases traction.
In drifting situations, you will find many different opinions on this part. There's a few people I've spoken with who don't like the traction brackets. After all, they increase the forces on the rear of the car, which technically makes it more difficult to slide the rear. This can be viewed as a down side. Inversely however, some people view traction brackets as a welcome addition. While technically they increase traction, this also allows the user to have greater controll with "lesser" tires. I've heard one friend refer to them as turning his "garbage tires" into "decent" tires. Upon speculation, you could also deduct that this is how those crazy Japanese drivers are able to perform full throttle blasts through turns and keep it pegged for almost the entirety of their run, only lifting for transitions. with the added traction, one can theoretically stay on the throttle longer for added "man with big testicles" appeal while other far more powerful vehicles have to modulate their throttles to keep from spinning out.
Posted: Tue May 05, 2009 3:15 pm
by landslideATX
i think i see how it works. the more weight you have over the tires the more grip you get out of them. now if you take everything out of your car, (i.e. seats, ect.) you lose traction due to not having the weight over the tires. putting weight over the tires gives you more grip but your car is heavyer. this allows you to get th grip of a weighted down car without the weight. with my old rolla i had to put a small sub box in the back to give me some weight back there due to the fact that when i would go into a turn the front end would dive down due to having all the weight up front and none in the back. will this take car of that prob as well?
Posted: Tue May 05, 2009 3:17 pm
by ga_goosh
yes it will allow you to run with out the sub box in the rear and will prolly have more grip.
Posted: Tue May 05, 2009 3:19 pm
by ga_goosh
Posted: Tue May 05, 2009 3:37 pm
by dr.occa
just remember: at stock height all 4 links are at the appropriate angle where the chassis weight is distributed ONTO the rear end. when you lower the car, it drastically changes the angle of the 4 links thereby putting the chassis weight IN FRONT of the axle thereby diminishing rear tire grip.
traction brackets for the lower links are intended to re-introduce the proper direction of the chassis weight onto the rear end again. but it only does so part of the way.
Posted: Tue May 05, 2009 3:39 pm
by ga_goosh
better choice of words
Posted: Tue May 05, 2009 4:06 pm
by landslideATX
dr.occa wrote:just remember: at stock height all 4 links are at the appropriate angle where the chassis weight is distributed ONTO the rear end. when you lower the car, it drastically changes the angle of the 4 links thereby putting the chassis weight IN FRONT of the axle thereby diminishing rear tire grip.
traction brackets for the lower links are intended to re-introduce the proper direction of the chassis weight onto the rear end again. but it only does so part of the way.
part of the way? does that mean that coupled with adj 4 links would put it back where it should be? or is it further then that?
Posted: Tue May 05, 2009 4:54 pm
by dr.occa
landslideATX wrote:
part of the way? does that mean that coupled with adj 4 links would put it back where it should be? or is it further then that?
the upper links are the other part that haven't been corrected.
they would either need to be angled up at the chassis point or angled down at the rear end.
w/ the either the equal length 4 links OR single third link, you have the ability to re-angle the geometry of them just by putting adjustable points inside the cabin.
Posted: Tue May 05, 2009 4:56 pm
by landslideATX
dr.occa wrote:landslideATX wrote:
part of the way? does that mean that coupled with adj 4 links would put it back where it should be? or is it further then that?
the upper links are the other part that haven't been corrected.
they would either need to be angled up at the chassis point or angled down at the rear end.
w/ the either the equal length 4 links OR single third link, you have the ability to re-angle the geometry of them just by putting adjustable points inside the cabin.
so an adj 4 link would not be enough coupled with the traction brackets to get it where you need it? how close will that set up get you?
Posted: Tue May 05, 2009 5:00 pm
by dr.occa
landslideATX wrote:so an adj 4 link would not be enough coupled with the traction brackets to get it where you need it? how close will that set up get you?
it's better than nothing right.
Posted: Tue May 05, 2009 5:05 pm
by landslideATX
dr.occa wrote:landslideATX wrote:so an adj 4 link would not be enough coupled with the traction brackets to get it where you need it? how close will that set up get you?
it's better than nothing right.
i used to have the adj 4 link on the old rolla but didn't adj them other then to the stock settings. i know when you lower your car your supposed to adj the angle of the 3rd member to put less strain on the drive shaft. is this true and how hard is this to do?
Posted: Tue May 05, 2009 5:07 pm
by ga_goosh
dr.occa wrote:
the upper links are the other part that haven't been corrected.
they would either need to be angled up at the chassis point or angled down at the rear end.
w/ the either the equal length 4 links OR single third link, you have the ability to re-angle the geometry of them just by putting adjustable points inside the cabin.
that makes me think can a traction bracket be used upside down on the upper link to get the upward angle you speak of or will it not have enough room or even be used on the chasis side to lower the uper arm?
Posted: Tue May 05, 2009 8:06 pm
by dr.occa
well, i've come up with a design to correct the geometry of the upper links. but it may also require going with even shorter sleeves. again, i stress may.
when i have them in we'll see.