Published 11 July 2021
Brett shows off the HB Racing RGT8-E racing car that he has been building for Tom in preparation for club racing.
Brett is looking forward to attending a number of future races with a group of these 1/8 GT-E cars to show how this class is low in maintenance and high in fun.
Already a winner on the racetrack, a pre-production RGT8-E driven by HB Team Driver Rosario Giaimo took pole position and the A-Main win in the 1/8 Electric GT class at the 2018 European Championships. The RGT8-E is based on the race-proven features of the RGT8, and adds the blistering speed of electric power.
The RGT8-E has a fully adjustable battery mounting system that can handle a wide variety of battery configurations. When using Shorty packs, multiple mounting points allow you to easily move the weight bias fore/aft to help tune the balance of the car. The batteries are held in place securely, and mounted directly on the chassis for the lowest CG possible. A two-piece CNC milled aluminum motor mount keeps the motor securely in place, and allows motor changes without having to readjust the gear mesh.
The RGT8-E features a tough 3mm aluminum chassis with raised side guards, similar to the successful 1/8 D817 V2 buggy. The 7075 aircraft aluminum chassis adds durability, lowers the center of gravity, dissipates motor heat, and helps dampen high frequency vibration. Molded nylon side guards help keep out rocks and debris.
The drivetrain uses a race-proven 4WD system with high strength steel center drive shafts, tough sintered diff gears, precision machined steel input gears and spur gear, and machined aluminum wheel hubs. To decrease drivetrain rotating weight the steel spur gear is lightened, as are the diff outdrives and center inputs. The center bulkhead is split for quick and easy access to the center differential. Just remove 4 screws and the center diff slides right out, a huge time saver when you're wrenching between heats.
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