Maybe someone knows the answer to my question (without needing to read the whole rulebook another time): Is there a rule that requires superchargers to be engine driven in some manner (mechanically or via exhaust energy)?
The rule book I have defines a 'blown' engine by describing what a supercharger or turbo charger is and does, 4.FF. The system with compressed air raises the intake pressures above atmospheric so would surely be captured as 'blown'.
If Nitrous oxide is considered in the rules to be worthy of installation as a 'fuel system', would the use of a compressed air bottle and system be the same? [After all it is only the percentage of O2 that differs]. If so, would the SCTA then be the first racing organisation to rule that the oxidant (air) sent into the internal combustion engine must be installed to the same standards as the fuel being delivered to the engine?
Why not run on Nitrous Oxide/fuel, rather than just air, throughout the run - less volume needed?