Traction Shock Question

[Matt49]

I dont know who started the idea of more lr bar angle=more drive, but it hasnt worked on any lm ive setup yet. Maybe our tracks are different down here in the south. Also, when the car is up on the bars, dynamically the car is de-wedged. Also, the oversteer that is created seems to outweigh the forward thrust that is induced. This is also confirmed by many engineers in our industry.

Most people (but not all) are figuring out that once the LR upper bar gets past about 45 degrees, you start to lose the advantage of the thrust angle.
I'm not sure about the idea that the car is "de-wedged" when up on the bars. I think many have found the opposite to be true. The increased thrust angle is providing added load on the LR while under acceleration but refer back to my first sentence...you can go too far.
And excessive oversteer because of roll rear steer is manageable. If you want a great deal of LR thrust angle without the excessive roll rear steer there are many ways to do it that will further compliment a slick track setup.

[Matt49]

Hey Matt, I think you mean to stiffen compression and easy up on the rebound on the left side to allow weight to roll easier onto the right side...

In conjunction with softer compression and stiffer rebound on the right side to let the weight get there and stay there longer. I'm simply making the argument for split valve shocks on the right side for someone considering running a blow-up shock on the LR.

[drtrkr244]

I dont know who started the idea of more lr bar angle=more drive, but it hasnt worked on any lm ive setup yet. Maybe our tracks are different down here in the south. Also, when the car is up on the bars, dynamically the car is de-wedged. Also, the oversteer that is created seems to outweigh the forward thrust that is induced. This is also confirmed by many engineers in our industry.

[sj valley dave]

Hey Matt, I think you mean to stiffen compression and easy up on the rebound on the left side to allow weight to roll easier onto the right side...

[Matt49]

I think we often get lost in the idea that getting the car up on the bars is all for getting bar angle to generate forward bite. Don't forget we are also trying to get side bite on entry and through the center. If you can get the left side up to generate lateral weight transfer (because of increase j-bar angle and raised VCG), that weight needs to go somewhere (to the right side). One sure fire way to make sure that weight gets there fast and stays there through the center of the corner is to split valve the right side shocks with softer rebound and stiffer compression.
Not saying that's what you need but just giving you another way of looking at it.

[lovinlatemodels]

There is no rule that says you have to run split valves all around the car. U need a base line to start and tune from there. Also shocks are timing devices so to say you need split valves isn't always true it depends on driver, track conditions, and track size i know some people that still run some straight valving along with split. We run a traction shock but the car was getting up on the bars so fast we had to change valving to calm it down if you car works with what you got already just put the traction shock on and try it and go from there.

[sj valley dave]

On our older GRT we ran similiar shock splits before we went to double adjustable gas monotubes. We ran a 9/3 split on the LR behind with no traction shock. We run a 500 lb/400 lb split in the front springs though.

[fox1162002]

You need to be split all the way around car in order to get a consistent car. Now if your racing in a tacky hooked up track you can get by with 5s and 4s. But in the slick you need split stuff. On my older grt we ran 5/3 550lb lf, 3/5 375lb rf, 3/5 225lb rr, 5/3 or 8/2 250lb lr, 3/7 300lb lift bar, we hardly ever ran a traction shock and won alot races with that combo. I hardly ever changed shocks or springs from the tacky and slick we justed freed the car up with bars. But that's my opinion and everybody are different

[hobbyracerbn2]

I got a Afco Traction Gas shock..I have been running Afco Regular 50/50 shocks on my Grt..I got 75's on front with 94's on back...just wondering in order to run my traction shock on the lr in front of axle would i have to change my 94 shock behind shock to a split valve shock to run to traction shock or would it just be fine??? Thanx