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1218-C
Ret-ro rules in-line version of 1218-A chassis; all-wire frame with inner and outer torsional wire side “pans”, and a separate center-guide section with torsional inner sections (wire version of “H” cut); incorporates three 0.010” brass sheet backed with 0.039” wire pans, one at the rear of the “H”-center-guide section, and two at the rear of the inner wire side pans.
Winner - IRRA GT Coupe, GRRR, Viper Pit (Engelman), 3/27/10