Dump bed hydraulics

   / Dump bed hydraulics #31  
Is that a motor that makes it follow or do you do that by hand?

I've had a torch for years but haven't bothered to refill the gas as it's always such a pain to clean up the pieces. I just might have to dig it out now.
 
   / Dump bed hydraulics
  • Thread Starter
#32  
Yes, its a gear motor with a dash light dimmer switch out of an '86 RX7 to control the speed. The motor shaft had too much run out after I added the aluminum adapter that holds the magnet and arbor so I put that inside the bearing on top.
 
   / Dump bed hydraulics
  • Thread Starter
#33  
Made the cylinder mount in the bed from 3/8" steel, 3" tall 6" wide. Then ran 2" box tube braces back to where the hinges are in the rear.

Used compressed air to see how far it would tilt as I didn't get a hydraulic hose made yet. It only makes it around 40 degrees, I have an old sheet of 10 ga that I might put on the floor if the dirt doesn't want to slide out.
 

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   / Dump bed hydraulics #34  
Looks good :thumbsup:

Shouldouda work :D

Give us an update and pictures with dirt.
 
   / Dump bed hydraulics #35  
A lot will depend on the type of soil you are trying to dump. Our sandy gravel has no problem dumping at 45deg but our clay won't move at 60deg....
 
   / Dump bed hydraulics
  • Thread Starter
#36  
It will be the dirt and grass bits swept up from a grass yard.
 
   / Dump bed hydraulics #37  
Looking real good.

I don't recall if you plan on using this with a tractor or not, but if you do, either use a rigid drawbar, or if you use one hooked to the 3ph, make sure to do something to prevent upward travel of the hitch. Otherwise you may get more than 40 degrees dump very suddenly.
 
   / Dump bed hydraulics
  • Thread Starter
#38  
The last part of this project is the hydraulics. The pump I have to use, only has a 1.5qt tank. It was already set up on top for a line that returns the other end of the cylinder, I assume to catch a spill if the seals leaked and a vent.

It does not have the capicity to fully extend the cylinder I am using.


My idea is to swap out the original fitting with one I modified that runs to the bottom of the tank as a pickup tube.

The idea is to fill the tank and lift the cylinder and add fluid as it goes up. Then as you let it down the lower pickup tube acts as a plunger to extract the extra fluid and draw it into the opposite end of the ram, for storage. Might take a few cycles to bleed everything of air. At that point the tank only needs to hold the extra 42ci that the 1.5" ram takes up.

Then as it extends, there will be plenty of fluid to operate and it works like a two way syringe.

The only problem I see is if the system "levels" itself and the pump/tank over flow, if they are lower than the cylinder.

Any thoughts on the idea?

Edit, the pump is power up and gravity down only.
 

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   / Dump bed hydraulics #39  
I would either get a bigger reservoir, or figure out a way to but a 2 way valve in that system and make it power down. That is one of the things I wished I did when I built my dump bed, because it took forever to come down.... And if you can find a solution to make it DA, then your volume is sufficient cause you only have to replace the amount of fluid that the rod occupies.
 
   / Dump bed hydraulics #40  
Have you checked on line for a larger resivoir? This might be the easy, cheap fix.

Dave
 

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