Slide valve timings

Live steam buffs .... which of the two following slide valve settings will
give the better performance in full gear on a compound HP/LP cylinder:
Advance at 122 degrees (or 32 degrees before the 90)
figures in percentage:
Admission 0.17 0.31
Cut-off 59.3 75.58
Exhaust 93.35 96.48
Compression 12.77 22.93
Lead 0.015 0.015
Advance at 131 degrees
Admission 1.28 2.39
Cut-off 53.18 69.07
Exhaust 88.15 93.4
Compression 17.87 29.63
Lead 0.04 0.04
Alan
Reply to
Alan Marshall
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