I don't recall off-hand but on the direct drive F1 cars the hex is much bigger and deeper than a TC hex. The 3Racing F109 uses a TC sized hex.
Correction...I meant the FGX uses a TC sized hex. The F109 is just like the Tamiya and other F1 cars.
Last edited by InspGadgt; 02-27-2015 at 11:58 AM.