About constraints

[Bicyclette]

Hi everyone, I'm currently trying to use the point2point constraint.
The documentations states this :
"point to point constraint between two rigidbodies each with a pivotpoint that descibes the 'ballsocket' location in local space "

I got a scene with 4 objects aligned with the x axis :

btConstraint.png

When I first tried to create the 3 point2point constraints by providing each pivot's coordinates in local space, I wrote this :

local.png

And then when I ran the program, I had the following wrong visual results :

point2point_local.png

(I can't add some more image files to this message, so I'll split it in two, sorry for that).

[Bicyclette]

Here is the follow up of my previous message.
When I then created the constraints by providing global coordinates for each rigid body pivot point, by doing like this :

global.png

I had a better visual result, though the end of the "tail" going up is quite strange :

point2point_global.png

I think there is something that I haven't understood properly, but I don't know what, can you please help me on this ?

P.S: the slashes on the first image mean that the value is 0.6