[ODE] Mass problem

[Ceydric]

Hi everyone.
  There is something I don't understand about ODE.
  I tried to used real masses for my objects (like 1000kg for a car, 25kg per wheel, little objects with low masses ...) The gravity is set to -9.81.
  I checked some position values for different objects when falling with no other force applied, only gravity and all works fine. The velocity of the object returned by ODE is quite good, the positions of my objects too, but something is happening with the masses.
  It seems that my objects are way much heavier than they should be. In order to push any object upward I need to add a force of  (65.3*mass_of_the_object). I was expecing to need a force of (mass*gravity) but it doesn't act like this.Well actually 65.3*mass is the minimum required to put my objects in some anti-gravity state, so it is just enough to counter the gravity.
  Any idea what my problem could be ? I tried many things but I have no more ideas ... :(
  Thanks to everyone who can explain me what I am doing wrong.

		
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