As far as weight is concerned, the way I look at it, most vapours are either overweight, or as what seems to have happened with May Tracks, very underweight (compressor aside) to overcompensate. The reason is, we cant build them to see if they really are 100 KGs, or weight the parts out before hand using anything more than what information we can gather on the partys, which are the only realistic ways to truly tell how much a robot can weigh.

The reason this doesnt bother me that much, is if all vapours are overweight, then it doesnt really give them an advantage. The only time it does bother me is if it does give a massive advantage, like having 4 Etek motors, 1 CM hardox armour and a hydrulic crusher.

Mark, my basic idea for the recycler would be to try and pipe the escaping gas into a compressing system, and then feed it back into the bottles... Its really an overkill idea though, seeing how many flipper battles tend to end when one runs out of gas.