Found this website. Very technical information and "how to".
MODELRAILROAD TECHNICAL INFORMATION
http://www.geocities.com/budb3/
Sample features:
*Do your trains look like the prototype or toys? See CLOSE COUPLING:
http://www.geocities.com/budb3/arts/tech/cupcls.html
*Replacing a motor? For the unbiased truth about parameters,
see STALL TORQUE AND NOLOAD DATA.
http://www.geocities.com/budb3/arts/motor/stltrq.html
*REPOWERING LOCOMOTIVES +REMOTOR +REGEAR
*CURVES & GRADES
.........and many more
MODELRAILROAD TECHNICAL INFORMATION
http://www.geocities.com/budb3/
Sample features:
*Do your trains look like the prototype or toys? See CLOSE COUPLING:
http://www.geocities.com/budb3/arts/tech/cupcls.html
*Replacing a motor? For the unbiased truth about parameters,
see STALL TORQUE AND NOLOAD DATA.
http://www.geocities.com/budb3/arts/motor/stltrq.html
*REPOWERING LOCOMOTIVES +REMOTOR +REGEAR
*CURVES & GRADES
.........and many more