Project Mamba Rally Car

RC Car Action - - BUILT FOR SPEED -

The Traxxas Slash 4X4–based Rally Car is one of those ve­hi­cles that can be a blast to drive on the dirt and pave­ment. With some mi­nor mod­i­fi­ca­tions, how­ever, it can be di­aled in to per­form well on the street. When you com­bine that with a lot more power, you have a speed de­mon on your hands, and that’s where we went with this awesome project Traxxas Rally Car. It re­ceived some road-grip­ping street treads from Pro-line, some parts that add dura­bil­ity from Traxxas, and (most im­por­tant) se­ri­ous power from a Cas­tle Creations Mamba Mon­ster speed con­trol and Neu-cas­tle 2200Kv brush­less sys­tem. Tire growth and the body rub that went with it lim­ited speed to about 40mph, but af­ter a tire swap, a 6S pass was clocked at 65.5mph. With some other mod­i­fi­ca­tions, we were con­fi­dent speeds in the range of 85mph would be pos­si­ble.

Left: A cut-down Team As­so­ci­ated bat­tery brace was used as a bolt-down mount for the speed con­trol. Two screws se­cured it to the chas­sis in the stock lo­ca­tion. Help­ing get this Rally car up to speed is a slick Ford Fo­cus Rally ST body from Pro-line. The cus­tom paint adds at least 5mph.

Above right: Var­i­ous op­tional parts from Traxxas in­creased per­for­mance and dura­bil­ity. The project Rally Car was out­fit­ted with parts like alu­minum hubs, alu­minum hub car­ri­ers, steel drive­shafts, and more.

Be­low left: The Neu-cas­tle 2200Kv brush­less mo­tor was able to be bolted up to the stock Traxxas mo­tor plate, but since it has a larger-di­am­e­ter out­put shaft, it re­quired a new pin­ion gear. A Robin­son Rac­ing hard­ened-steel 0.8 mod­ule 23-tooth pin­ion gear was se­cured to the shaft.

Right: Pro-line Road Rage tires were used to put the power down to the ground. Once 4S power was strapped in, the bal­loon­ing ef­fect of the tires started rub­bing on the body.

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