This Arrowmax 2nd gear is presented as an RC-scale replacement part intended for use in MUGEN MTX-5 gearboxes. The item designation indicates a 19-tooth second gear produced in 7075 hard material, aimed at providing a durable service life within standard model drivetrain assemblies.
Functionally this gear serves as the intermediate (second) spur in the MTX-5 transmission layout, where correct tooth engagement and consistent mesh are critical to drivetrain smoothness. When fitting, verify alignment with the motor pinion and adjacent gears, confirm bearing seating, and set backlash to the chassis maker's recommended clearance for MTX-5 setups.
For tuning purposes the 7075 hard material favors wear resistance under high-load track conditions while retaining machining accuracy for stable gear mesh. Use light gear grease on contact faces, check for burrs before installation, and avoid excessive preload on the gearbox bearings to maintain longevity.
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