| Photos from the final driver work being performed at the Tennessee Valley Railway Museum in Chattanooga, TN. |
|
TVRM General Foreman George Walker and David Pugh turn journals on #2 driver.
photo credit Scott Lindsay, Steam Operations Corp. |
|
#3 driver set up for quartering. The new wheel center is at the back of the pair.
In locomotive practice, with the usual two-cylinder arrangement
(each cylinder in reality an engine),
the main crank pin on one side leads the main crank pin on the other side
by an angle of 90 degrees, the valve motion being adjusted accordingly.
Thus, when the engine on one side is on the dead center, the engine on
the other side is on the quarter - in position to furnish power
for movement. |
|
New wheel center L3 with crank pin located and quartered.
photo credit Scott Lindsay, Steam Operations Corp. |
This page updated on December 22, 1999