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
LEGO Technic Crawler Crane (8288) /Toys by Unbranded - Shop Online for Toys in the United States
LEGO 8288 Crawler Crane Set Parts Inventory and Instructions - LEGO Reference Guide
LEGO 8288 Crawler Crane Set Parts Inventory and Instructions - LEGO Reference Guide
LEGO Set 8288-1 Crawler Crane (2006 Technic) | Rebrickable - Build with LEGO
LEGO 8288 Technic Crawler Crane MISB for sale online | eBay
LEGO Technic Crawler Crane (8288) for sale online | eBay
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 system : r/legotechnic