I did some calculations based on stuff found on the
Massive List and pushed through a little program I wrote years ago... and here are the results:
2 stop push @ 20?C for 35mm
HC-110 (dil.B) =15 min 46 sec
FX-39 (1+9) = 17 min 27 sec
Rodinal (1+25) = approx 18 min 1 sec
Rodinal (1+50) = approx 38 min 16 sec
for 120 film
HC-110 (dil.B) =15 min 46 sec
FX-39 (1+9) = 27 min
Rodinal (1+25) = approx 18 min 1 sec
Rodinal (1+50) = approx 38 min 16 sec
These should put you in the ballpark... but I don't give any warranty on the results...