June 7, 2025

Wallie Builds Factory Works RC8B4.1 Pro Radio Tray

Best known for its car building services, US based Wallie Builds has released this Factory Works Pro Radio Tray for the RC8B4.1 from Team Associated.  With a lot of the conditions in SoCal being loose and rough, Nick Wautlet set out to design an in between weight bias setup.  Team Associated currently offers two Chassis’ for the RC8B4.1.  The FWB Chassis is the standard that most brands are using (Mugen, Xray, Sworkz) and the RWB Chassis is the same length, but the centre items (Engine, pipe, Radio tray [minus Steering servo], centre diff and fuel tank) all move back 10mm.  The FWB chassis in Wallie Builds opinion is the most balanced chassis, but can be a little bit of handful in some cases.  The RWB Chassis, feels good but, from their testing has been slower with the same driving effort.  In order for the RWB chassis to be fast, you have to drive on the edge the whole time which is difficult to maintain over long main events.  Aiming to find the happy medium, they took the existing radio tray and modified it to use the Hump style RX battery in the back near the engine.  They also moved the location of the receiver and transponder to the front of the car and found that in doing this, the car became a whole new animal.  The resulted in improvements that include higher consistency, lap after lap while conditions worsened, an easy to drive buggy in rough conditions, more on power grip exiting the corners, and a buggy that was less reactive to bumps at high speed.

Source: Wallie Builds [walliebuilds.com]



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