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1310-D (left) & 1310f-Ca (right)
1310-D: 4.5" wheelbase Ret-Ro Stocker modification of 1310-Ca design (designed to fit Outisight OS-601 '68 Dodge Charger body).
1310f-Ca: 3.0" wide modification of 1310-Ca design designed to fit TrueScale TSR-11 Ferarri 330 P4 body (and meet Ret-Ro GT Coupe class).
Both chassis using two construction methods (“hybrid-build” technique); all-wire frame with “damper” main rails; separate torsional center-guide section attached to motor box built to be as narrow as possible using only four side-by-side pieces of 0.047” wire, with torsional flanking pans made of 0.010” brass sheet backed with 0.039” wire (wire version of “double-V” cut); separate left-right torsional rails attached to motor box for front axle uprights; torsional 0.010” brass sheet backed with 0.039” wire inner side pans and perimeter wire outer side “pans”; angled motor bracket.
Both chassis subsequently refitted with variable spring-wire tension system between center-guide section / front-axle uprights for "chassis tuning".