Author	[Modern View]
Puddles 03-21-2013 04:07:45 24.113.77.208 Report to Moderator	You better start thinking of how your going to build a truss to go on top of the gooseneck! When I built my gooseneck adapter I used 12x19 beams. It is only a 14,000-lb trailer. [Reply]   [No Email]
jon f mn 03-21-2013 05:53:00 70.195.64.195 Report to Moderator	Re: I made a dump trailer (pics) in reply to Puddles, 03-21-2013 04:07:45   I think that with the 1/4 wall tube that part will be fine. He has the axle nearly centered so there won.t be a lot of tonge weight, and he has it gussetted right to take the pull. If there is a problem it will be that he needs a cross member or two in the gooseneck to keep them from flexing from side pull. If he gets one of those wheels in a hole or in the mud he could flex those tubes sideways enough to be a problem. They could also start to wobble from road vibration without the stiffeners too. But over all a very well done rig. [Reply]  [No Email]
Justin SE IOWA 03-21-2013 17:39:08 166.181.83.223 Report to Moderator	Re: I made a dump trailer (pics) in reply to jon f mn, 03-21-2013 05:53:00   Quoting Removed, click Modern View to see You are right! When it is loaded there isn't a lot of tounge weight. If the top beams bend then I have done something bad wrong and I deserve for them to bend! Thanks for all your kind words! [Reply]  [No Email]
jon f mn 03-21-2013 19:10:42 70.196.33.8 Report to Moderator	Re: I made a dump trailer (pics) in reply to Justin SE IOWA, 03-21-2013 17:39:08   I do see a couple of minor flaws that could lead to trouble. If you are interested in talking about them send me an email. mine's open. [Reply]  [No Email]
Justin SE IOWA 03-22-2013 20:01:58 166.181.80.29 Report to Moderator	Re: I made a dump trailer (pics) in reply to jon f mn, 03-21-2013 19:10:42   Quoting Removed, click Modern View to see Please tell on here! I rarely get on my email and am not very good at email anyway! I always take constructive criticism as I always want to learn. So what is it that I could do a little differently? [Reply]  [No Email]
jon f mn 03-23-2013 05:46:44 70.196.33.9 Report to Moderator	Re: I made a dump trailer (pics) in reply to Justin SE IOWA, 03-22-2013 20:01:58   Well the biggest problem is the jack. 4" of weld on the bottom is not going to cut it if you dolly down with a load on a hill. That part is almost certain to fail. But the cure for that will help another weakness that isn't as bad and that is you need more suport on your gooseneck. On the upright part there should be some gussets to hold it square from side to side. So I would put another cross member of 2x4 or 4x4 across at the top of the jack. You can weld the jack to it eliminating that issue and then a gusset at each end takes care of the other problem too. For gussets I would use the same size you used on the lower frame, put it so the long edge goes up and down and points to the center at the cross member. I would also like to see 2 cross members in the upper gooseneck deviding that span into 1/3's. Those don't need to be heavy just anything 4" tall. And just for your info and I'm not sure I would change it here, I hate to see you do too much damage to a real nice looking trailer, but on the large gussets at the top rear of the gooseneck they should always be welded like the front or lower ones. When you weld in the center of the tube there is the potential to stretch the center out and that could lead to failure. If it's welded to the corner or side it can't stretch and deform the tube. [Reply]  [No Email]
Puddles 03-21-2013 07:25:05 24.113.77.208 Report to Moderator	Re: I made a dump trailer (pics) in reply to jon f mn, 03-21-2013 05:53:00   Here is a uniform load chart for 2”x4” with 3/8” wall rectangular tube. Remember now these are static loads, I have no idea what dynamic loads would be! These are also in kips. So lets say he has an 8-feet span, take the lower number of 6.4. Generally with these uniform load charts you divide in half for point loads, which that is what we have here. So now we have 3.2. But we have two pieces of rectangular tube, so we are back up to 6.4. So that is six thousand 400 pounds of static load. Anybody want to calculate for a dynamic load? [Reply]  [No Email]
dennis min 03-21-2013 17:35:16 71.48.126.93 Report to Moderator	Re: I made a dump trailer (pics) in reply to Puddles, 03-21-2013 07:25:05   Without a smarty tone, Thnaks for providing the load information. D. [Reply]  [No Email]
jon f mn 03-21-2013 07:46:17 70.195.64.195 Report to Moderator	Re: I made a dump trailer (pics) in reply to Puddles, 03-21-2013 07:25:05   Here's a trailer I built with 2x4x1/4 tube. It's still in use after about 18 years. [Reply]  [No Email]