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Old 01-22-2014, 02:21 PM   #1
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Default Traction Rolling - how to solve it

Often times when you go to a big race the grip comes up more than your local track and your setup not only does not work, but you traction roll

here are some approaches I have used to help reduce traction rolling

http://www.setupworkbench.com/fighting-traction-roll/

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Old 01-22-2014, 02:27 PM   #2
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Good stuff,thanks for posting!!!
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Old 01-22-2014, 05:09 PM   #3
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Martin posting again, do I smell a comeback??
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Old 01-22-2014, 05:20 PM   #4
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How about rear end lack of traction. The rear on my TA06 slides out bad on turn in and a bit coming out of corners
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Old 01-22-2014, 06:01 PM   #5
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Martin posting again, do I smell a comeback??
You never know!!!

I do miss it.
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Old 01-22-2014, 06:07 PM   #6
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How about rear end lack of traction. The rear on my TA06 slides out bad on turn in and a bit coming out of corners
Not knowing what your setup is let me suggest a few things.

Raise the rear roll Center

Add some droop to the front of your car

Lower the front roll Center
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Old 01-23-2014, 12:17 AM   #7
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Martin, There's few things i'm surprised you didn't add to your list.

1. Increase front track width if same as rear, or increase track width front and rear if car is very narrow.

2. Reduce front camber

3. If running regular weight body try light weight

Any reason these would not be good options?
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Old 01-23-2014, 02:24 AM   #8
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wouldn't reducing front camber aggravate traction rolling? depending on the roll center, the car would have a higher chance of rolling on the outside edge of the outside wheel on corner entry. wouldn't this have a higher chance of tucking the sidewall in and eventually flipping the car?
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Old 01-23-2014, 10:09 AM   #9
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Not necessarily. Remember camber is a product in which you generate the widest use of that tire and surface area contacting the surface you race on. If you are 2 deg. Front camber and are utilizing the full width of the tire in a corner that's more corner speed and higher bite. Less camber on same surface will allow the vehicle to grip a bit less and "slip" across the surface a bit more, because you are not using all of your rubber on the surface for grip. The front will push a bit more, and not allow the cars inertia to carry over that outside front tire as much.

Another thing I see as a helper in traction rolling is anti-dive. I've recently started to experiment with this. Helps greatly with augering. Thoughts?
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Old 01-23-2014, 11:05 AM   #10
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Quote:
Originally Posted by bkspeedo View Post
Martin, There's few things i'm surprised you didn't add to your list.

1. Increase front track width if same as rear, or increase track width front and rear if car is very narrow.

2. Reduce front camber

3. If running regular weight body try light weight

Any reason these would not be good options?
Reducing camber will help for sure, as will the lighter body. I was trying to focus more on perhaps the less known approaches.

As for the front track width, I would say maybe yes, maybe no. I say maybe no, because if you widen the front track width more than the rear, then the rear tends to roll more than the front, causing the front inside tire to raise up more raising the CG more...leading to traction rolling. I would suggest keeping the track width the same front and rear will lead to better results.
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Old 01-23-2014, 11:08 AM   #11
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Originally Posted by Boostinswifty38 View Post

Another thing I see as a helper in traction rolling is anti-dive. I've recently started to experiment with this. Helps greatly with augering. Thoughts?
yes anti-dive can help as well, but it can also make the car more edgy on turn-in and that abrupt change can sometimes cause the car to hike up before the suspension fully compresses depending on spring rates, shock valving roll centers, track width etc. Having said that, anti-dive is something to for sure experiment with.
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Old 01-23-2014, 11:17 AM   #12
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Default updated the blog post

btw - I added the suggestions above to the blog post
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Old 01-23-2014, 11:18 AM   #13
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Default rear traction

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Originally Posted by Atechbh View Post
How about rear end lack of traction. The rear on my TA06 slides out bad on turn in and a bit coming out of corners
What rear stiffners are you using on the car??? Aluminum or composite ???that might make a big difference also on the ta06...
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Old 01-23-2014, 11:21 AM   #14
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Quote:
Originally Posted by Martin Crisp View Post
Reducing camber will help for sure, as will the lighter body. I was trying to focus more on perhaps the less known approaches.

As for the front track width, I would say maybe yes, maybe no. I say maybe no, because if you widen the front track width more than the rear, then the rear tends to roll more than the front, causing the front inside tire to raise up more raising the CG more...leading to traction rolling. I would suggest keeping the track width the same front and rear will lead to better results.
First thing I do on most of my cars is shim out the front / narrow the rear when traction rolling. I guess I should try a different approach! Thanks Martin

When will we finally get to meet you on the West Coast?
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Old 01-23-2014, 11:39 AM   #15
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martin I have your setup workbench on my phone and it is wonderful.
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