There are two types of RC choppers: coaxial and conventional style helicopters; learn the differences between the two RC chopper styles in this free hobby video clip on remote control car racing. Expert: Robbie Contact: www.rchqonline.com Bio: Robbie has been Racing RC cars for 7 years. He has also owned and operated his store and RC track for 4 years. He is the head operator of all the races and there is a complete schedule on his website. Filmmaker: julio costilla

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