Cothran PowerHouse Valve and TP.

[Voltar1]

Started on a test fixture  last night. While redrawing the parts I had an epiphany lol
Reduced to simplest elements it is a chamber with a central guide rod. Then a piston with an internal and external sealing oring fits into fitting
It now is easy to understand that the force generated will  be due to the EFFECTIVE area! Man I missed that somehow!
So my apologies for my pigheadedness :-)
The valve as made by Cothran is pure genius!
Will finish the test fixture and perhaps Bob will help me post pics on here.
Brain is starting to calm down now!
Cheers

[rsterne]

Cheers.... 
Email me the pic and I'll put it in my photobucket account.... bob at mozey-on-inn dot com

Bob

[rsterne]

Here is the sketch of Walter's test rig....



Bob

[Voltar1]

Thank you Bob

Built the test rig. Made the large piston 0.650" and the small 0.460"
With the full diameter pumped to 150 psi the scale read 40 pounds.
With the annulus sensing the 150 psi the scale read 19 pounds.
So fun was had and the brain is able to relax a bit :-)
Now to discover more ways to use this neat idea.............
Walter

[rsterne]

Walter's Test Rig....









Bob

[Voltar1]

Thank you Bob. Thinking of uses for this biased valve idear :-)