tried out everything described, burst is not possible in 3dstereomode.
it is also possible to take a number of images as fast as your camera continuous-shooting mode will allow
set 3 for burst
3(repeats) to 0= burst as long as set in c/d shooting interval
when i started i could shoot one single 3dstereo but not burst.
it is totally chaotic. sometimes i see the usb-waiting sometimes not.
did a canon and sdm-reset, did not help.
i have now found out how to setup and trigger the cameras for single and continuous-shooting. i am doing 3dsterero-panoramas.
there are significant differences in the camera-settings and shooting-procedure.
forget time-lapse for action-shots-continuous-shootings. i will retest it anyway because i could have made mistakes.
more inforations can be found here and i will not further continue this thread:
http://chdk.setepontos.com/index.php/topic,3446.0.html