That innovation was killed by article 5.1.5 of FIA:
"Only reciprocating poppet valves are permitted"
Seems a bit arbitrary.
Though I have heard it the BRV was killed by the limit of certain metals seen as poisonous -- also dubious considering the danger is in the manufacture, not racing.
I'd like to think some of the immense amount of research and development that went into the Bishop Rotary Valve for Mercedes F1 has not gone to waste.
That innovation was killed by article 5.1.5 of FIA: Seems a bit arbitrary. Though I have heard it the BRV was killed by the limit of certain metals seen as poisonous -- also dubious considering the danger is in the manufacture, not racing.