Re: Hydraulic Expert

Garry Whitman ( (no email) )
Thu, 27 Aug 98 09:00:55 PDT

You Wrote

>Hey Garry,
>re: your rules of thumb

>I would be interested in finding a set of the "Rules of Thumb" of which you
>spoke.

They were in a handbook of mechanical design, the hydraulic section, and
applied to hydraulic oil only.

>I don't have the answer to your question; but it got me wondering, what are
>you dealing with in the way of the fluid that is passing through your
>pipes? I could see that the velocity for distilled water would be constant

This post was in reference to the Clem Engine so the working fluid will of
course be Mazola Corn Oil. The engine supposedly ran at 300 degrees. Mine
will be similar.

>enough to have a standard velocity, at which it ceased to have laminar
>flow; however, anything else with higher viscosity would theoretically be
>constantly changing, (moreso than water) from the 'turbulence induced'
heat.

>This presupposes a recirculating fluid base, without 100% dissipation of
>heat, which may not be the case in what you are doing. Is the temperature
>and pressure of the fluid always going to be constant? If so, my questions
>are irrelevant, but temperature, and viscosity would still be factors to
>consider, in calculating the proper velocity would it not?

>Just thinking.

Hopefully Mazola at 300 Degrees is similar in viscosity to hydraulic oil.
Only a couple of hydraulic experts replied but I had no hope of a Mazola
expert. This whole machine is a shot in the dark but a couple of starting
points won't hurt.

I need all the help I can get. Thanks

>Stephen Brummitt
>dev@icx.net

Garry Whitman
whitman@kskc.net