Re: Re: Re: Re: Re: Re: A question of physics


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Posted by Rick Denney on February 25, 2003 at 13:52:59:

In Reply to: Re: Re: Re: Re: Re: A question of physics posted by Chuck(G) on February 24, 2003 at 20:01:11:

Putting them on the stop arm allows the rotation of the valve to be controlled downstream of the several sloppy clevis hinges that made up many tradition linkages. From a mechanical standpoint, it's best to limit motions (where such limitations are needed) as close as possible to the reason for the limitation. In this case, it's the alignment of the valve ports that dicates the need for the limitation, so the stops should be as close to that as possible.

This also allows you to service and modify the linkages and finger buttons without having to worry about valve adjustment.

The value is doing it as you suggest is that by moving the stop as close as possible to the applied force, you avoid the wear caused by that force on the linkages. And, as you say, adjustment mechanisms would be much easier to execute.

Rick "who agrees with the objective of adjusting rotary valve stops with something other than a razor blade" Denney


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