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**Fan Railer**the stated tractive effort is 80,000 lbs,

but according to the formula for tractive effort, with a coefficient of .85 is 84,981 lbs

but a locomotive with roller bearings equipted should have a coefficient of 1, which would yield a max tractive effort of 99,977 lbs.

maybe that's why it was so slippery back when it was operational...

oh, the formula is

T = cPd(squared)s / D

t is tractive effort

c is a constant representing losses in pressure and friction; normally 0.85 is used (1 is used when roller bearings are specified)

P is the boiler pressure

d is the piston diameter (bore) (this is squared)

s is the piston stroke

D is the driving wheel diameter

but according to the formula for tractive effort, with a coefficient of .85 is 84,981 lbs

but a locomotive with roller bearings equipted should have a coefficient of 1, which would yield a max tractive effort of 99,977 lbs.

maybe that's why it was so slippery back when it was operational...

oh, the formula is

T = cPd(squared)s / D

t is tractive effort

c is a constant representing losses in pressure and friction; normally 0.85 is used (1 is used when roller bearings are specified)

P is the boiler pressure

d is the piston diameter (bore) (this is squared)

s is the piston stroke

D is the driving wheel diameter

Last edited by Fan Railer on Thu Nov 19, 2009 12:38 am, edited 1 time in total.