Significance
Terra Crusher (TG-01) was an attempt from Tamiya to break into the American nitro radio-controlled truck market, which has been dominated by such American trucks as T-Maxx from Traxxas. The popularity of T-Maxx was overwhelming and it started an off-road monster RC boom. Responding to the popularity of this new market segment, such other manufacturers as Tamiya, Hobby Products International (HPI) and Associated Electrics developed a line of nitro trucks to compete with T-Maxx.
Terra Crusher had all the major features of T-Maxx, including big tires, 4 by 4 with two shocks per tire, in two-speed transmission, as well as reverse gear and on-board starting system. In addition, Terra Crusher was bigger. T-Maxx weighed 4 kilograms (8.8 lb) 4 kg, Terra Crusher weighed 5.7 kilograms (13 lb). Terra Crusher was offered at about the same street price of $400. To lower the production cost, Terra Crusher had two channel radio system included, instead of the three channel set offered with T-Maxx. Lacking this extra gear meant that reverse was done with a differential gear. T-Maxx reversed by using a gear shift, controlled by third channel. In Terra Crusher, however, one of the central gears had a set of differential gears inside. When the brake is applied, this gear is also stopped, and differential engaged to rotate the connected gears in opposite direction. It was an ingenious solution, however setting proved delicate and complicated, not to mention adding extra weight to the gears. Later models did away with this mechanism.
Read more about this topic: Tamiya Radio Controlled Nitro Vehicles
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