AXIAL CAPRA 1.9 UTB / UTB18 General Troubleshooting

Hardened Steel Portal Gear Set

The stock sintered metal gears often lack the hardness to withstand high-torque 'bind' situations common in rock crawling, leading to rounded or chipped teeth. Hardened steel replacements provide a higher modulus of elasticity, preventing gear teeth from deforming under load. This set restores the precise involute gear profile required for silent operation.

SKU: AXI232001

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Heavy Duty Bevel Gear Set (30T/8T)

Grinding frequently originates at the differential input where the pinion meets the ring gear. The Axial Capra's portal design increases the torque load on these gears; precision-cut heavy-duty gears reduce lash and minimize the risk of tooth separation during vertical climbs. This component ensures the primary drive torque is transferred without mechanical slip.

SKU: AXI232002

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Portal Axle Shim Kit

Mechanical grinding in RC portal axles is often caused by excessive axial play in the gear shafts. A shim kit allows the engineer to reduce the side-to-side movement of the portal gears within the housing, ensuring the teeth remain perfectly centered on the pitch line. Proper shimming eliminates 'slop' that otherwise manifests as a grinding or clicking noise under acceleration.

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