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A304
Ret-ro rules in-line open-wheel chassis; 1305-based design; using two construction methods ( “hybrid-build” technique); all-wire frame with separate motor-center-guide section with torsional inner section (wire version of “H” cut) made of 0.010” brass sheet backed with 0.039” wire, and torsional 0.010” brass sheet backed with 0.039” wire side pans.