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View Full Version : Suspension and handling


Shrubba
2001.11.13, 07:12 PM
Here is some great info to help all you Mini-Z'ers :)

Now, this is a write out for realy cars... but most will apply to the Mini-Z too.

Adjustment / Increase Understeer / Increase Oversteer
Front tire selection / Harder / Softer
Rear tire selection / Softer / Harder
Front tire section / Smaller / Larger
Rear tire section / Larger / Smaller
Front wheel camber / More positive / More negative
Front springs / Stiffer / Softer
Rear springs / Softer / Stiffer
Front anti-sway bar / Thicker-stiffer / Thinner - softer
Rear anti-sway bar / Thinner-softer / Thicker-stiffer
Weight distribution / More forward / More rearward

to fix an oversteering car you need to increase the understeer
Pick and choose from the following menu, have fun!
Front tire selection = Harder
Rear tire selection = Softer
Front tire section = Smaller
Rear tire section = Larger
Front wheel camber = More positive
Front springs = Stiffer
Rear springs = Softer
Front anti-sway bar = Thicker-stiffer
Rear anti-sway bar = Thinner-softer
Weight distribution = More forward

Shrubba

EDIT: Made a few word chances to make it more fitting to Mini-Zs

Draconious
2001.11.28, 05:13 PM
Curious, either this is wrong or some one else was wrong... wich is over steer? making too big of a radius, thus missing the curve hitting the outside wall, or turning too tight and hitting inside wall? Some how I think diff ppl think they are the other way around visaversa etc...

herman
2001.11.28, 11:18 PM
understeer = lack of steering... usually turns wide into curves (less responsive to steering, lesser steering throw from one end to the other)
oversteer = too much steering... usually turns too tight into curves, and thus more prone to spin outs. (more responsive to steering, more steering throw from one end to the other)

generally it would be ideal to have more understeer than oversteer... but it's all up to the drivers preferences, some like more understeer, some like more oversteer.

if you don't know what setting to choose, i suggest going around the track with max oversteer (set steering throw all the way to the right) then set the steering throw by moving it to the left after a couple of laps, repeat this until you're quite comfortable around the track at the setting with the least amount of steering throw... you'll know if you have too much understeer if you go too wide on curves.... you'll know if you got the right setting if you can turn your car just clipping the curve (or apex)

hope this helps

Draconious
2001.11.28, 11:25 PM
Thats what I thought, kinda the way the gran torismo manual says.... with out actualy saying it.

So I guess I have too much understeer to correct... hard to get it to turn. (using model car tires in rear only... ).

Shrubba
2001.11.29, 12:54 PM
Originally posted by Draconious
Curious, either this is wrong or some one else was wrong... wich is over steer? making too big of a radius, thus missing the curve hitting the outside wall, or turning too tight and hitting inside wall? Some how I think diff ppl think they are the other way around visaversa etc...

basicly this is what it is all about:
Understeer means the front tires have a higher slip angle then the rear..
Over steer means the rear tires have a higher slip angel then the front.

you also have to deal with "Power-on oversteer, and even power-on understeer" something those of us with high HP rear wheel drive cars get to play with :)

After consulting my list (talking about tire pressure) it shows that a lower tire pressure will give LESS traction, and higher pressure will give you MORE traction. So you will see that Hard tires will give LESS traction and Soft tires will give MORE traction. So that is why I said that Lower pressure would be Harder compound, and Higher pressure would be Softer compound.

this is according to the list. It will not be correct in every case, because so much depends on the surface you are running on, but these are good general rules. Also when we talk about changing tire pressure, we are assuming we are very close to optimal pressure... with-in at most 5psi. changing only 1psi will make a differance. but we don't have to worry about that with Mini-Zs :)

I hope this helps. :)

Shrubba