crawlster®4Wd –
the worldwide unique HighEnd BTA steering system for Axial WRAITH

The implementation of a BTA concept for the Axial WRAITH has always been considered difficult, if not impossible. crawlster® steering systems accepted the challenge and tried a completely new approach.
After more than 15 months of development, it is now finally ready: crawlster®steering systems presents the crawlster®4Wd.

*using Universal Joint Axle Shafts (AX 30779 / AX 30780 – not included) or Vanquish Products  WRAITH VVD V1-HD (VPS 07370)

The crawlster®4Wd concept
A linear guided BTA articulation with short hinge arms, in combination with meticulously dimensioned knuckle links, an incredible steering angle became possible even with short travel distances and positive Ackermann, where the inner wheel turns more than the outer one.

All crawlster®steering systems support:

The standard steering of some of the most common 4x4 crawler scale models have a negative thrust angle (Ackermann) because of their design. In practice this leads to an unfavorable steering performance with constant sliding of the wheel on the outside of the curve. In addition, steering bars in front of the axle tend to reduce the ground clearance and spoil the scale look of model 4x4 vehicles.

crawlster®steering systems resolve these issues by design-optimized links – the inner wheel now steers correctly i.e. more than the outer one – so the cornering performance and off-road maneuverability is significantly improved – without steering bars in front of the axle.