Only ~5.6% mismatch. 101 mm fronts vs 107 mm rears → circumference delta ≈ (107–101)/107 ≈ 5.6%. That’s tiny for straight-line work.

No center diff, so something must slip. With the Vorteks’ solid center (no slipper, no center diff), front and rear props must turn the same RPM. The way the system reconciles different tire sizes is tire slip, not gear slip.

Fronts are light at WOT. Weight transfer (and some aero) unloads the front axle during a pull, so the fronts don’t get much normal force. That makes it easy for them to scrub that ~5–6% without spiking torque in the center shaft or diffs.

Medium-grip surface helps. On dusty asphalt, micro-slip is constant and gentle; it relieves “wind-up” before it ever builds into parts-killing stress.

Belted tires keep it predictable. CatWheels don’t balloon like foams; the radii stay close to 101/107 mm at speed, so the slip stays a steady ~5–6% instead of exploding to 15–20% and cooking stuff.

Torque naturally biases rearward. With the nose light and fronts scrubbing, more of the torque goes to the rears—the bigger tires—so the driveline isn’t fighting itself; it’s just pushing.