[chbot] Test Tubes for Stirling Engine

[Charles Manning]

On Tuesday 30 November 2010 20:19:47 Chris Hellyar wrote:
> Are beakers not very slightly tapered?  Would they be blown into / onto
> a mould and so need to be tapered to aid in releasing em?

Surely no more than for test tubes?

A slight taper does not really matter for the purpose I intended. Simple 
Stirling engines often have two "cylinders". One is the power cylinder which 
needs a tight fit. The other is the chamber for the displacer. There is a gap 
between the displacer and the chamber so a slight taper would not matter.



> ( Knowing nothing about the process used to make a beaker! :-) )
>
> On Tue, 2010-11-30 at 09:27 +1300, Charles Manning wrote:
> > I have two stirling engines (from kit) which I should bring to a meeting
> > as there are some interested folk.
> >
> > I have bought stuff from lab warehouse in the past and they provided good
> > service. I considered using a beaker as a cylinder to give a big
> > see-through chamber.
>
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