I hope you need the weight to tell some poor sole who is buying it how much it weighs(scrap man perhaps?). I would suggest finding the biggest piece of low weight crap machine you can find for the travels (not familiar with series) and subtracting about 30%.
Just for the record, I'm not completely down on Acrolocs, they were a pioneer, and for their time had some fantastic machines. The one we had was a piece of crap and we had to give it away, nobody would buy it.