[ODE] wheels attached at the wrong spot

[akio]

Those pics are great. Love the wheels, hehe.  Why don't you use spheres
instead.

You've not copied and pasted any configuration, so it's difficult to analyze
the problem but I will make some suggestions.
One or two possible invalid configurations:
1) your body is configured as hinge2 - it'll make the body spin as if it was
a wheel (like the pic).
2) hinge2 axis alignment possibly could be off - all wheels must be the same
otherwise you'll see weird body movements.

----- Original Message ----- 
From: "Ian McMeans" <imcmeans at telus.net>
To: <ode at q12.org>
Sent: Saturday, April 03, 2004 1:49 AM
Subject: [ODE] wheels attached at the wrong spot


> Here are two pictures that I think illustrate my problem:
> http://www.imageshack.us/my.php?loc=img2&image=normal1.JPG
>
> This is how my car looks with no gravity. Once I press forward and the
> wheels start spinning around their centres (IE in the normal way wheels
> spin), my car looks like this:
> http://www.imageshack.us/my.php?loc=img2&image=after1.JPG
>
> It appears the pairs of wheels are revolving around an axis at the centre
of
> the car body, and the car body is spinning in the opposite direction (I
> guess it's preserving linear momentum). Has anyone run into this weird
issue
> (or understand why it's happening ot me)? I'm using hinge2's, and the each
> wheel's joint's anchor is position at the centre of the wheel.
>
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