It’s a Technic double today, with two entries into the latest TC10 competition on Eurobricks. Both are pneumatically operated creations, as specified by the contest rules, and both show how brilliant LEGO’s little air cylinders can be.

First up (above) is this magnificent Technic snow groomer by Samuel Wharfe, with no less than six air-powered functions. The front blade raises, lowers, oscillates, and its edges can be adjusted to suit wider or narrower tracks, the rear blade can raise, lower and deploy smoothing rollers, and the whole vehicle can be raised above the snow via a pneumatic suspension system. There’s lots more to see at Eurobricks, and via Samuel’s Flickr photostream.

Today’s second pneumatic creation was suggested by a reader and comes from newcomer luukietechnic. Luukie’s heavy-lift telehandler, and it too features a wealth of functions. A Power Functions driven pneumatic pump provides air pressure for the boom elevation and self-levelling attachment, as well as a tilting cabin, whilst mechanics control the telehandler’s boom extension and four-wheel steering. You can see more of the build, including WIP photographs of the mechanics, at Eurobricks via the link above.