Tandem axle wagon build

[aczlan]

Mark, I have been looking at that pump also. I was wondering if the reservoir is big enough for a 4"x24"cyl. I also wondered how slow it would raise. I the calculators I used are correct it would take 60 sec. to raise and 40sec to lower. That is awfully slow.
Bill

If you are using a double acting 4"x24" cylinder with a 2" rod connected to a double acting pump you will need a tank that holds .326 gallons.

Formula: V = pi (r)2 x depth
Calculation: Volume of rod = 3.14*(1x1)*24 = 75.36 Cubic Inches.
75.36 Cubic Inches / 231 = 0.32623376623376623376623376623377 gallons

If you are using a single acting 4"x24" cylinder connected to a double acting pump you will need a tank that holds 1.3 gallons.

Formula: V = pi (r)2 x depth
Calculation: Volume of rod = 3.14*(2x2)*24 = 301.44 Cubic Inches.
301.44 Cubic Inches / 231 = 1.3049350649350649350649350649351 gallons

Being as the linked pump comes with a 2 gallon tank there would be more than enough tank capacity. As for speed, it should take slightly less than a minute to raise the trailer being as you need 1.3 gallons to fill the lower section and the pump puts out 1.4gpm@2500PSI. The only dump trailer I have run took at least 40 seconds to dump a load of wood chips, so that wouldnt be horribly slow.

Down time would depend on the flow backwards through port A.

Aaron Z

 

[Hooked_on_HP]

I had a change in my hoist set up. Powerstroke444e mentioned it in his post but I guess I didn't fully understand what he was talking about. I now have the rear of my cyl. mounted about in the center of the tandem pointing toward the front of the trailer.The front of the cyl. is mounted about 2' back from the front crossmember.This means it is lifting 29" further forward than my first setup. As the cyl. extends and the box raises the cyl comes up in an ark . When the cyl is fully extended I have 58" of lift from a 24" stroke cyl. It also takes less air pressure to raise the box than the other set up.Thanks for the idea Powerstroke.
Bill

 

[leveller]

Looks like a good idea. I'm not sure why, but I had it in my head that the cylinder had to push to the rear. I like the fact that you are lifting the load closer to the front of the trailer with this set up. I am too far along with my trailer to change now, but this looks like a better way to do it. How are the ribs feeling? Greg

 

[Hooked_on_HP]

Over the weekend I took off the box frame and turned it upside down and finished welding the bottom. I also finished the lower cyl.mount. After that I figured while the box was off I would prime the bottom. Tonight I put the box frame back on and hooked up the cyl and gave it a try. Every thing worked! Then I started making some guide plates. There will be 3 on each side. These will make sure the box comes down centered on the frame.
Bill

 

[powerstroke444e]

Looking good and glad I could point you in a direction that could help you get it to lift more. I like how you reinforced the cyl mount. Hope it all works out and sorry I couldn't get a photo of mine but I was to lazy to move everything infront of it. I will get one once it warms up. I used the 2way pump that hooked on HP listed and it works great, if you need I think they will put a bigger resivor on it for a small amount.

 

[Hooked_on_HP]

How long does it take to dump your trailer. Using the calculator on SC's sit it will take almost a min. to dump. Or does the pump pump at a higher rate when less pressure is required.
Bill

 

[powerstroke444e]

I have a smaller cylinder on mine dump but I have seen same pump on a 1ton pickup and a large 16' gooseneck dump and it don't seem to be to much differant than the pto pump on the dump truck @ the farm. On my mine if its empty or light material it does go up much faster than with wet dirt.

 

[Hooked_on_HP]

Tonight I started working on the sides. I decided since the trailer ended being 70" wide insted of the 60" I originally planed on I would make the sides 12" tall. I will still be able to over load it and if I am loading any thing by hand I can easily go over the side. I need to figure out how long to make the tongue. The tractor is 5' wide and the trailer is 70" wide. I am going to have 1 tube come strait out from the center and one from each corner to the center tube. If it warms up this weekend I am going to roll everything out of the shop and do some cleaning. My shop is usually clean. Here are some more pics. The last pic is for those of you that enjoy raw power or that need something to show the wife that is more expensive to play with than tractors.
Bill

 

[Hooked_on_HP]

Tonight I got the tongue done. I made it 4' long. The angle braces were a pain to make. Then I capped the ends of the tubes that I needed to. Hopefully tomorrow I can finish the last few welds and finish priming what needs it. I ordered a 12V double acting hyd. pump today. I figured this would be easier than hooking and unhooking hyd hoses every load. If every thing works out I may get everything but the tongue painted this weekend. I am going to build a box on the tongue for the hyd. pump.
Bill

 

[dcyrilc]

Tonight I got the tongue done. I made it 4' long. The angle braces were a pain to make. Then I capped the ends of the tubes that I needed to. Hopefully tomorrow I can finish the last few welds and finish priming what needs it. I ordered a 12V double acting hyd. pump today. I figured this would be easier than hooking and unhooking hyd hoses every load. If every thing works out I may get everything but the tongue painted this weekend. I am going to build a box on the tongue for the hyd. pump.
Bill

What's your plan for a tailgate? Are you going to have one?