[Steam-engine] Timing/adjusting the slide "D" valve

[Andre' Blanchard]

At 08:33 AM 7/14/2005, you wrote:
>   Howdy all from warm Montana;
>   Well the final painting is almost done on the Wachs vertical and assembly
>will start soon, but we have no guidelines on how to time the slide valve.
>The eccentric is on the crankshaft and it is keyed so that's a no brainer.
>Any help from there on up would greatly be appreciated!!
>
>Pix's at:
>
>http://community.webshots.com/album/188300547wpVzDE
>
>TIA
>Rick and Cork in "The Big Sky"
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>http://www.stationary-engine.com/mailman/listinfo/steam-engine

If the eccentric can only go on in one orientation the timing is done.  You 
just need to center up the valve its travel, on my engine this was done 
with nuts on the valve rod.  Find the piston top and bottom centers, when 
the piston is at each center the steam port for that end of the cylinder 
should be just starting to open stick a thin wood wedge in and when it goes 
in the same distance on each end you are good enough.

Make sure you center up the piston in its travel as depending on how the 
bearing adjustments are done on the connecting rod the piston can slowly 
move to one end of the cylinder or the other as bearing wear is taken up if 
it is let go too long the piston can hit the cylinder head.

__________
Andre' B.  Clear Lake, Wi.