YACO - XL's

I really liked the original YACO object by Clinton (http://www.thingiverse.com/thing:65016), but for my Opiliones 2L (a delta printer) I also wanted to have larger versions to compare results. Hence, I made 3 additional versions: while the original "yaco" has axis lengths of 60mm, these additional ones come as 120, 180 & 240mm versions.