Recent content by mekyy

I am having trouble understanding this. The question was how to limit breakaway oversteer I know that putting the CG to the rear will increase the rear traction and induce understeer as there is less grip on the front tyres. However, I have also found that to reduce oversteer you want to...

ok thanks for the help So what I did was use the lateral force with mu=0.7 i then calculated the moments of both axle centres (this uses the small values of rolling resistance forces)...turns out you use the whole axle as the opposing directions of the rolling resistance forces actually double...

lol hold up i was using kg not N changed it and only gives me ~430 Nm for rear axle moment about centre of the axle...

also another thing...my "axle length" is actually length from centre of tyre to centre of opposite tyre on the axle...is that ok? *Except I am using half that*

actually come to think of it..since both moments on the same axle act at the center (thererfore spinning the axle in same direction) they would cause the moment to double??so calculate the moment on that axle for one side and double the answer to get total moment of axle??

OK thanks for that starting to understand it a bit better. Using that equation for rolling resistance I am getting a force of 32 N for front right and 48 N for rear right tyres...for a 20 tonne vehicle seems too little? I also found another equation which yields closer to 100 N... F=Crr * N/R...

Ok so for a project of mine I need to calc. the force required to steer an articulated heavy on road vehicle and to overcome friction (so I need to calc frictional forces too). I understand I need to draw FBDs but it has been a while since i have done that and I have never worked with an...