Dude! I used to be in the hobby. Even worked in the largest hobby shop in the city, back in the day. Large scale has been around a long time. Real turbine engines included. Back in the mid 80's the now extinct Byron originals offered 1/4 scale kits of planes like the North American P-51D Mustang, Mitsubishi A6M Zero and the Chance Vought F4U Corsair among others. They were absolute beauties...!!!!
anyhoot, do a search on YouTube. you'll find all kinds of stuff like 1/4 scale C130s, SR-71s, C-5 Galaxys, B-52s, etc...