Avid Alu and Steel 5.5mm wide/5mm Bore Pinions

New from Avid are these pinions that are specifically designed for the drag racing scene using 4 pole motors with 5mm bore shafts.  What makes these pinion unique is that Avid made the teeth 5.5mm wide instead of the tapered teeth that end up being around 4mm.  This allows for more surface area resulting in fewer stripped gears, especially when you mate this pinion with Kimbrough spur gears.  The pinions are available made out of 7075-T6 aluminium & hard-anodised to reduce wear and friction, as well as steel.  In drag racing, the choice between aluminium and steel pinions often comes down to the specific needs and goals of the vehicle.  The majority of racers opt for aluminium pinions due to their lighter weight, which results in quicker acceleration.  However, in cases where the vehicle experiences difficulties maintaining traction or keeping its nose down during launches, a steel pinion may be a better option.  Steel pinions help balance the vehicle by limiting torque at the start, thereby improving horsepower and top-end speed.

Source: Avid [avidrc.com]