ah thats good to know about the bat, something i know very little about to be honest =). I was thinking I would need two packs, but I imagine the two new bats supplied with the drills, broken down would give a 36v pack, wouldn't need that much would I? (apologies if these are simple stupid questions =)
lol love the circuit diagram =P

To sam, yeah i was looking at using a jack, was playing around earlier today at uni with some threaded bar and a N test gauge got a 44N pull of a 18v drill before it started spinning in the chuck, was told 'under pain of death do not damage the chuck' by our tech guy =). Copying the idea on a smaller scale or getting a small jack would defiantly provide more than enough force.

Hopefully however I think the search for an Actuator is over. should know by tomorrow which is great!

Would anyone happen to know the width of the robo challenge wheels was looking on google but could only find dia. Also if anyone is selling a set of 100mm let me know will be very happy to take them of your hands =)

Sounds like a pretty mundane piece but was wondering if there are any caster ball makes/types that people would recommend?

Cheers
Jon