diy flow bench

[Greg Hermann]

>Does anybody know if anybody has built a diy flowbench ? I had an idea
>that you could use an electric motor with an air pump on it and measure
>the current drawn by the motor. You could use it uncalibrated in just a
>good, better mode or maybe you could calibrate it by flowing known
>items. It would be easy to hook up a PC and have a proffesional looking
>display. The bench part would be easy to build and you could mount the
>motor/pump underneath. Any thoughts?
>

A shop vac, a box and a manometer should get you close. an ammeter on the
vac would add a little more info on what is going on. A bolt to push on a
rocker arm, and a dial indicator to measure valve opening, and you can get
truly useful data--like where the "knee" in a port's flow is with
increasing valve lift--so you can make informed decisions as to how much
valve lift is enough.

Regards, Greg
>--
>
>Matt Boland                                     m.boland at cat.csiro.au
>CSIRO Division of Exploration and Mining        Phone: +61 7 3212-4482
>PO Box 883  Kenmore                             Fax:   +61 7 3212-4455
>QLD 4069 Australia