Regenerative Hydraulic Circuit Question

[GF]

Has anyone built a regenerative hydraulic circuit to speed the process on a hydraulic ram extending until under load?  Curious as to what is required to accomplish this.

Thanks
Gary

[Brucer]

If you want to do it manually, you need a T, a 3-way valve, and 3 extra pieces of hose. I just posted about it somewhere recently ... DanG, where was that anyway?

I haven't figured out a quick and simple way to have it shift manually from fast mode to power mode, but it's probably do-able.

[IMERC]

try this...

http://www.hwhcorp.com/ml37939.pdf

[jamesamd]

A simple circuit for speeding up the return stroke of a log splitter is to add a spring loaded check valve.Rated for 3000# with a 1 to 1 poppet ratio (equal surface area on both sides of the valve).
Spring pressure about 65# to 125#



I would need a lot more info on what You are trying to accomplish,to give a better answer to Your question.

GPM of pump
type of pump (gear/piston)
PSI needed to extend with no external load
cylinder and rod diameter +stroke length
and is the return filter a tin screw on or a 3000# HP rated or no filter at all.

Jim

[GF]

Jim,
   The cylinder is a 5 X 24 with a 2 1/2" rod.  I do not currently have a pump, I am in the process of building a firewood processor (thread in the drying and processing board).

The cylinder has only 1/2" ports, when I purchased it they said it had 3/4" ports but is only had 1/2".  Thinking about having it modified with 1" ports.
I am trying to get the cycle speed at quick as possible.  I am looking at a 25GPM single stage pump.  Currently I do not have a return filter, still in the design phase. 

Gary