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  • Users: mjmghdm
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  1. mjmghdm

    Simple Camber Question

    Hey;Thanks,But; I know these necessities of negative (static) camber. <Maybe I ought to list a "What I know" at each thread!> My essential question is: Is shoulder wear a penalty for these tires (aging)? (If not, ...Why...Please...) And do they use this appreciable negative static camber with a...
  2. mjmghdm

    Simple Camber Question

    If non-zero cambers make shoulder wear of tyre (as Fig.), Why many of famous car manufacturers choose a non-zero (almost larg negative) camber for their front (or rear) wheels? If you tell me they compensate it by toe-in (for example), I'll ask you how? thanks.
  3. mjmghdm

    roll stiffness distribution &amp; oversteering

    How can a high rear roll stiffness cause oversteering? What I know: 1- I can increase understeering by changing the anti-roll bars with a stiffer one in front and a softer one in rear. 2- Higher roll stiffness of an axle leads to higher portion of that axle in lateral load transfer on the...
  4. mjmghdm

    just wondering scrub radius question...

    Wow!In 3minutes?! But I think negative scrub radius has a more important effect in an elastokinematic manner, directly on the tire and its linkages, whitout any need to turn the steering wheel! & high lock angles?: Do you mean large steering angles which make returnability act reversely?
  5. mjmghdm

    just wondering scrub radius question...

    ...Oops,I had made a mistake ( +&- ) in writing the last sentence. And you answered before I can correct it. Actually I knew somethings about that, but, we have two pretty similar cars with a difference on their driving axle (FWD and RWD), and their scrub radiuses (that are according to the...
  6. mjmghdm

    just wondering scrub radius question...

    Excuseme, But... If it is a large amount (around 20mm or more), Is there a rule to make a negative scrub radius for FWD and a positive one for RWD? Or, Always the positive one is recomended for the both?
  7. mjmghdm

    Can Oversteering and Understeering change by Weight?

    Thank you tow; Dear hamipanter: Thanks for your illustration. Your example validates my conception. But my question is exactly the secoend reason of yours: "location of the mass". How dose this happen? Is this observable (1.)in a simple bicycle model or (2.)in a four wheel model or (3.)is this...
  8. mjmghdm

    Can Oversteering and Understeering change by Weight?

    There is a question about oversteering issue. If I add some (or very much) masses to the rear end (rear axle) of my car, Can this alteration chage my understeer vehicle to an oversteer one? Actually I have read alot about oversteering, but I can't take into account all of them together. Now...
  9. mjmghdm

    Ending Shape of Leaf Spring Layers

    I have a question about the leaf spring. In some leaf springs, there are two thinner areas at front and rear end of each layer (5-10cm lenght approximately). This reduction of thickness is made by a rolling process, then the lateral edges (which get wider after rolling) cut and make a...

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