Mini crawler crane designed I came up with (cat for scale) I used set 42121 as the base and the instructions for set 8288. The hardest part was setting up the pulley
Sold Price: LEGO TECHNIC 8288 CRAWLER CRANE ASSEMBLED W/ BOX - July 6, 0120 4:00 PM EDT
Amazon.com: LEGO Technic 42042 - Seilbagger : Toys & Games