How to Set Up Your RC Crawler's Suspension for Rock Crawling
A rock crawler that struggles on the trail almost always has the same underlying issue: the suspension is not set up to keep all four wheels in contact with the terrain. Most RTR crawlers ship with shocks and springs tuned to survive shipping and look correct in photos, rather than to maximise articulation on broken ground. Understanding a handful of suspension fundamentals — droop, preload, shock oil and spring rate — is what separates a crawler that climbs confidently from one that lifts wheels and loses traction at the first uneven section. Image Credit: FairRC / BATRAZZI View the BATRAZZI Oil-filled Aluminium Shocks for FCX24 at FairRC (affiliate link) This guide covers what each of these settings actually does and how to approach tuning them on a typical RTR crawler platform. Why Suspension Tuning Matters More on a Crawler Than a Basher On a basher or short-course truck, shocks exist mainly to absorb impact from jumps and rough terrain at speed. On a crawler, their jo...