[SEL] OT. Brake fluids

[Rob Skinner]

On May 18, 2009, at 6:42 PM, Jim Hardman wrote:

> Rob, are these fluids really compressible?  No entrained gas  
> bubblets?  Not
> many liquids really compress.  The whole world of hydraulics relies  
> on near
> incompressibility and brake systems are a good example.


In ultra high performance systems, it's an issue.  But you are  
absolutely correct about dissolved gasses, which are an even bigger  
issue.  You can pull a vacuum on brake fluid, right out of the  
container, and get a shocking amount of air.  It's not a big problem  
for grocery-getters, but for high-performance, it's critical.


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