vinegar

[cyclops@mindlink.bc.ca (cyclops)]

From: quk@isham-research.demon.co.uk (Phil Payne)
Subject: interference fit

In message <E0xwBLb-00030a-00@dewey.mindlink.net> cyclops@mindlink.bc.ca
(cyclops) writes:
> you seem to be describing the piston motion as following a square-wave
> motion.

Anyone achieving square-wave motion of a non-zero mass should seek out their 
nearest physicist and ask then to sit down before describing their achievement.


gee, what happened phil? too much vinegar on your chips? the graphical
representation of distance plotted against time has nothing to do with the
laws of physics or the properties of matter. my response in the context of
the early threads concerning piston motion was to help illustrate the
difference by a small example. several more knowledgeable listers have since
confirmed that the graphical representation of the piston travel would be
sinusoidal and not just up and down ie  a square wave. since all that is
being discussed is piston travel, as viewed by a casual observation and
visualization, it lends itself to graphical representation. by selecting
appropriate parameters for the graph and the piston travel, piston motion
could actually be shown graphically as a square wave but is not in the
context of what was being discussed. for example- if the vertical plane is
used for piston travel, with a base line equal to 1/2 the distance travelled
(or 90deg/270deg crank position) and the horizontal axis equal to time
measured in one second increments. the crank is then hand turned, with a
time of .5 seconds to travel between tdc and bdc. at tdc and bdc i choose to
pause for 10 seconds before continuing the next travel of .5 seconds etc etc
etc. the waveform graphically represented by this action is a square wave.
certainly not in the context of the thread and merely a graphical
representation of piston travel over time under prescribed conditions. i
guess just as irrelevant as your physicist comment.
you need to drive your urq and get some fun back in your life.
mike