while a good idea at the time i couldnt get the bygs ironed out.
 useing two motors and worm gearboxes to drive the arms it tended to wander around too much.
after extending the tail it couldnt self right.
it could climb lego box heights at the rate of a step every 10-13 secs.
and a turn of 180 degrees took about 10 secs .
it sort of fell down the steps a  bit so it could get down in about 6 -7secs,
I have no stairs to really try it so my guess is about 1min to climb turn and desencd.
harder then it looks...
mongke.