[Steam-engine] Lead on slide valve.

[Richard Strobel]

  Howdy all;
   Wachs engine is now up and running but has obnoxious knock on both 
centers.  Crankshaft, connecting rod, crosshead and slides, piston rod and 
piston clearances all seem within normal operating range.

  Now we've been told knock may be due to improper valve timing.  i.e. "Lead 
and Cushion" are important.

  Please keep in mind, the eccentric is keyed to the crankshaft although 
some evidence of tinkering is obvious.  This engine does not have a 
reverser.

  Can anyone sic me on a site or explain "proper timing methods?"

  Here's some before and after pictures of our 3 year project:

http://home-and-garden.webshots.com/album/188300547wpVzDE

  Hope ya enjoy...constructive comments are always welcome!!

  RickinMt.