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External Hydraulic Pack


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The ones I was involved with, had a gas powered motor running the hydraulic pump and ram.

It was a substantial sized ram to get the cutting power, even using mechanical advantages with leverage. The cutter was custom made shear that could cut 6-8". Worked well even though it was on the heavy side.


I'll browse around and see what I can find


If you're buidling an actual tree topper and if you'd consider it, you should look into a servo actuated electric saw (chainsaw perhaps), I can see an immediate weight savings as well as simplicity in that.

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Not building an actual tree topper no but thanks for the info. I realize I am not showing all my cards here so it is tough.


We have a gas powered hydraulic pump right now too and I am trying to eliminate it from our project. Too many moving parts and too heavy. My plan was to use something like a snow plow hydraulic pack (but in 24v of course).


Princess auto has most of the parts I need, just gotta find a solid 24VDC power pack. I think I have found a few online though.

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How about using pressurized air from the compressor?


It's been a few years, but I used to work for a company that had a grapple and a cone harvester which used an "hydraulic" ram which operated on air pressure.


A C20B makes about 90 psi at 100% torque. Run an airline down the longline, a little accumulator with a checkvalve and you are in business.


Of course, that was in the days when STCs were optional. :)

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