Hi Phil /pete/mick
The decision on the multi union is fine
The situation with the other cars is becoming somewhat surreal
Pete .The reason why the porsche is banned is because in the time limit that these rules encompass ie pre 1960 the porsche was only ever a Formula 2 car ,not a Grand prix car whereas the cooper t51 /t53 and the lotus 18 were all full 2.5 litre GP cars
The voiturette situation is more murky
For sure when the ERAs were raced in the 30s they were voiturettes however after WW2 when the formula for f1 changed to 1.1/2 litre S/c and 4.1/2 litre unsupercharged then all those 1930s voiturettes became full F1 cars
So if you are going to let alfa 158s ,maserati 4cls run then logically you should let ERAs run
after all they actually took part in the 1950 monaco GP.
The alfa 512 in addition to being a rear engined car
it too was designed as a Voiturette but since it never raced at all it must forever remain a voiturette ,not having had the chance to make the big time and take part in the F! races .
Incidentally phil i have no axe to grind one way or the other on this as I dont have ERAs or any other voiturettes for this event
Cheers tony