THUMPER 1:8 scale RC Car CJ7 Rock Crawler by BlackCrow (No supports!)

  Are you new to Black Crow Prints? All the STL files are here free on Printables.com. A non printed parts list is below along with easy step by step assembly videos. Help is available, usually within 24hrs. You can contact me thru private message or comments on the makes and comments tab. File updates are always listed at the bottom of each description page. Ways you can help: Let me know when I make a mistake. Share your builds with friends on social media and subscribe to my YouTube channel. If you would like to help me provide these models free to others you can become a “My Club” member. No obligation implied and you will get no special treatment from me other than my appreciation. .. Now go build an adventure.  ________________________________________________________________________________________________________________     Now, I am proud to introduce Thumper. Thumper is a scaled CJ7 rock crawler. These crawlers are common in the western and south eastern USA. This model is very close in build to the real thing. Scale puts the 120mm tires at the standard 37" tall. The front axle has been moved forward about 10 inches and the back axle moved back about 9 inches. The seats have been moved back and mounted to the roll bars for safety. A race fuel cell has been added and raised above the frame for clearance. Without a trailer hitch the approach and departure angles are 90 degrees. The ramp over angle could be better.  You can't have everything. Update: New clearance mod improves ramp over angle. (belly clearance) See High Clearance Mod below in link to build options.    When building a real rock crawler you want the tires to be as big as you can swing while keeping the body and center of gravity as low as possible. You want lots of power while staying light and nimble. Cooling the engine is usually an issue and it has to practically run upside down without leaking fluids. To be honest the CJ7 is not the best choice for this and they are becoming too valuable to destroy. You could technically buy every part of a CJ7 without buying any actual AMC or Jeep parts using 100% catalog aftermarket parts. This model is a fully home built custom crawler.    This 3D printed build was designed to be strong and easy to work on. I appreciate the “fully 3D printed” models put out by others however I tend to be a bit more utilitarian. This model uses RC hobby standard metal axle gears and drive shafts. The transmissions use an amazingly strong belt system that is very quit. The motor/transmission sets are easily removed and swapped without removing axle links or suspension. The battery module slides out the back for easy charging or swapping. This model has room for one or two 2S 7.4 volt shorty Lipo batteries.   Before building please read carefully. This model has options. In an attempt to keep things simple the motor/transmission build options and other options are in separate listings. Build this Jeep chassis, pick your motor/transmission setup. Then combined or swap out Motor/transmissions. You also have door and top options along with custom options in the Thumper aftermarket store. The half top option requires a different rear tub found in the Door and Top Shop. The Four Wheel Steer option also has a separate listing for it's custom parts. All the STL files you need are listed with links below. Parts are numbered in order of use. Parts files are in proper orientation to print. Assembly videos at the very bottom of this page.  _________________________________________________________________________________________________________________ Videos: Introduction here. **Assembly videos at bottom of this page!!** Introduction to Four Wheel Steer version. **Assembly videos at bottom of this page!!** ________________________________________________________________________________________________________________ Action Video below by independent Builder Lasz YouTube channel here  Top and doors in this video by MaSt52 here ________________________________________________________________________________________________________________ Links to build options: (You need to pick a transmission, The rest are optional)  Metal Gear Motor/Transmissions  https://www.printables.com/model/769045-thumper-and-morrigan-cheater-metal-gear-transmissi  Printed Gear Motor/Transmissions https://www.printables.com/model/356820-thumpers-transmission-shop-for-18-scale-rock-crawl Four Wheel Steer Option  https://www.printables.com/model/394110-thumper-4ws-rear-steer-mod-18-scale-rock-crawler-b High Clearance Mod https://www.printables.com/model/1217597-high-clearance-mod-for-thumper-rc-4x4-crawler  Optional doors and tops  https://www.printables.com/model/629922-thumper-door-and-top-shop  Aftermarket Parts Shop https://www.printables.com/model/356827-thumpers-after-market-shop  Requested and Retired parts https://www.printables.com/model/396992-requested-and-retired-parts Top Shop  https