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Need some urgent help in Hydraulics!!

I want to participate in a Robowar tournament in IIT, India. For the weapon I am planning to use Hydraulic claw just like Razor from Robotwars. Could someone please tell me what are parts needed for the hydraulics?    

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Hydraulics need high pressure pumps, pressure bypass valves, oil reservoirs and double acting hydraulic valves for the ram.

They can be VERY dangerous to play with.
steveastrouk could you please give a brief explanation about double acting hydraulic valves for the ram.
Hydraulic cylinders usually use two ports, one to push the rod out, and one to push the rod in, the valve needs to operate in both directions. When the end stops are reached, the pressure bypass in the pump kicks in, and oil flows in the pump/reservoir circuit
Re-design5 years ago
THis is going to be expensive. Google "12 volt hydraulic pump" . THen look for a cylinder, valves. lines and a tank to see what I mean.
Yup, using hydraulics is expensive, what do you reckon about pneumatic?
Re-design5 years ago
I'll bet it uses an air piston with a valve and storage tank.
iceng Re-design5 years ago
+1
onrust iceng5 years ago
Air? Could CO2 be used? The small tanks from a pint ball gun would be sweet.
iceng onrust5 years ago
Or N2
Jayvis Vineet Gonsalves (author)  iceng5 years ago
The Razor uses hydraulics
http://en.wikipedia.org/wiki/Razer_(robot)
Here is a video of it in action
http://www.youtube.com/watch?v=_e4cHWS2758

Could someone please tell me the parts required for this hydraulic system?