FAN FRIDAY FEATURED BUILD BY ERIK WESTLUND
Erik’s build info:
This build was something that emerged after building two RC4WD 1:18 Gelande II D90s. The build began late October 2018. I had a rolling chassis lying on the bench and that’s when the idea came to me. I started to read about the Ultra4 scene and looking through tons of pictures of chassis and suspension geometry.
I had earlier built an exo roll cage for one of the 1:18 Gelande ll made from Evergreen plastic rods and figured that that wouldn’t hold up well on this kind of car. So, I started searching forums on brazing = soldering brass rods with silver solder, flux and a butane torch. Driveline and electronics are from a RC4WD 1:18 Gelande II. I used the V1 transmission as it is smaller and provides higher top speed though lacks in crawling ability. The ESC is shrink tubed and located behind the driver. Steering servo is housed in an engine block up front and the battery is located in the back. There are plans to install LED lights front and rear using a modified RC4WD 1/18 blackjack light kit. The chassis is all made from brass rods, tubing and brass sheets. All done without any jig or fixtures. Yes, it was hell at first.
Upper control links front and rear had to be lengthened as lower links are all custom made. This meant that original links had to be cut, milled and threaded and screwed onto threaded brass tubes. The shocks are original shocks modified with parts from the Crawlster D18 kit, plus a set of Hot racing Losi micro rock crawler shocks modified with RC4WD rod ends. Wheels are standard 1” Gelande ll steel wheels with 1” Goodyear Wrangler MT/R tires. The steering is heavily influenced by the 1/10 Capo ACE 1 set up, with push pull cables connected to fabricated dummy hydraulic steering ram. It’s 0.5mm steel wire housed in 1mm tension spring wrapped in shrink tubing. The wire is looped on the servo horn and locked to the steering ram piston with brass ferrules.
The servo is housed in a 1/18 scale engine block (KinsFun 1/18 garage accessories) modified with tensioner for the tension springs / wire sleeves. The battery is housed in the rear “fuel cell” with a hatch for easy access. Seats and driver are resin parts for 1/18 scale diecast models.