Re: Steam HP Vs. Otto Cycle HP
Posted by:
Ben (IP Logged)
Date: July 19, 2006 12:18AM
I can't recall at the moment,,But the Stanley HP was a rating,,at standard pressure and RPM,,, a standard for rating steam engines,,having nothing to do with ALAM or other gas car people,,,[ I cant recall what these were,] I think near 300rpm /100PSI,,,, Maybee Dave or George will remember,,,I recall seeing it somewhere,,,,,,,,,,, Gas cars:: most of these HP were taken from the ALAM horsepower FORUMLA , based on piston area ,, and piston speed,,[NOT RPM],,,details on this in all [?] Dykes book,,These ratings have little to do with developed HP ,, as the engines developed at a different rate from formula change,, The following is subject to checking,,1908 Packard so called ''30'' developed this at 650rpm and 84 hp at around 1250 ,,, 1925 Packard 8 developed [max] 84 hp at around 2600 ,,,The old car was faster,,, 1915 Pierce 66 hp model developed 66hp around 700rpm and 150 around 1500rpm,,,max rpm was 1800,,so says the handbook,,haha,,,Most of these engines had 4:1 compresson,, One of the old timers claimed the 10hp Stanley could put out 90 hp,,,and the 20 hp was 150,,,Hopefully George may comment on this,,,,later as time permits,, Cheers Ben