Another "myth to kill"??.....what makes it go???

   / Another "myth to kill"??.....what makes it go??? #1  

AKKAMAAN

Veteran Member
Joined
Apr 12, 2009
Messages
1,029
Location
Port Angeles WA
Here is another "challenge" to all of you....
Have you ever heard about "flow makes it go"??
IS IT A MYTH??
Can you guys tell me your "take" on this one??
 
   / Another "myth to kill"??.....what makes it go??? #2  
Make what go?:confused:
 
   / Another "myth to kill"??.....what makes it go???
  • Thread Starter
#3  
Make what go?:confused:



Oh sorry Transit....this is obvious when you have once come across this saying "flow makes it go"....

You are a lucky guy if you never heard about it.....:D


It relates to the hydraulic cylinder, motor or what ever hydraulic actuator there is to move....
 
   / Another "myth to kill"??.....what makes it go??? #5  
Pressure makes the flow make it go.

Bruce
 
   / Another "myth to kill"??.....what makes it go??? #6  
gpm gives you speed and psi gives you power. Of course a lot of other factors must be considered, but as a general rule thats the case.
 
   / Another "myth to kill"??.....what makes it go??? #7  
differential pressure causes it to move ... moving allows flow
 
   / Another "myth to kill"??.....what makes it go???
  • Thread Starter
#8  
Hint...
Newton's first law of motion.....
"Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it."
 
   / Another "myth to kill"??.....what makes it go??? #9  
gpm gives you speed and psi gives you power. Of course a lot of other factors must be considered, but as a general rule thats the case.

:thumbsup:....
 
   / Another "myth to kill"??.....what makes it go??? #10  
Having had to troubleshoot many hydraulic problems over the years, flow by itself won't do any work. It is the ability to make flow under pressure that does the work. I have tested many hydraulic pumps with a flowmeter that would make the recommended flow with no pressure, but as soon as you introduce a restriction, that flow it would drop to nothing. Most pumps are rated with a static flow at a given RPM and are expected to still flow at least 80% of that, up to the system relief pressure. Which also shows that pressure alone won't do any work, considering with the same flowmeter I can stop the flow and still have pressure.

Brian
 

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