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Plumcrazy 12-22-2008 04:39:43 75.100.206.76 2856 Report to Moderator	I put 15in. racks on my 18ft trailer, so I can haul dirt, bark, etc. But I also use it to haul equipment. With the racks on, I can't use the stake pockets for anchor points. Harbor Frieght has 1/2 inch D rings with a 10,000 lb capacity that mount on the deck. Would these hold a 5000 lb tractor chained to them? [Reply]   [No Email]
Jerry/MT 01-09-2009 16:16:13 206.183.116.129 2948 Report to Moderator	Re: D rings in reply to Plumcrazy, 12-22-2008 04:39:43   Those rings are only as good as what you attach them to and what you attach them with. Unless you're going to hang your tractor up on them, the main loads that they will see is the the tension you put on them with chain binders, the fraction of weight that they pick up whe you go up and down hill and the acceleration and deceleration loads plus any manuever loads that are imposed especially in an emergency situation. Without doing a detailed structural analysis, it's hard to know whether your existing trailer is capable enough as is to handle the loads. Maneuver loads are probably the largest and also the hardest to figure. If you bolt them on, use large (1/2 "?)grade 8 bolts and make sure that what you bolt them too is really beefy and watch th edge margins on the holes. If you weld it, weld it on to heavy structure, reinforcing it if necessary. If you don't know what you are doing have a professional welder make the modification for you. He'll most likely over build it but that's OK. It ain't the Space Shuttle.   [Reply]   [No Email]
caterpillar guy 12-27-2008 19:06:54 64.12.117.195 2876 Report to Moderator	Re: D rings in reply to Plumcrazy, 12-22-2008 04:39:43   they are heavy enough for that size tractor after all they are only holding half of that weight in theory. If you go look at the in floor holddowns in semi trailers they just bolt them to a little cheesey 4" cross member then rate them for 5,000 each. If you look in a steel book the cross members are listed as junior beams and they sure are juniors too light as well you know. If they mount them on the 3" channel they should be fine. if they are 12" on center the wood will tie them together as well as the side rail.   [Reply]   [Send Email]
T_Bone 12-28-2008 04:53:13 4.240.39.183 2879 Report to Moderator	Re: D rings in reply to caterpillar guy, 12-27-2008 19:06:54   What cat guy, you think I just pull those numbers out of my a$$ like someone else does? Had you been a engineer you would have seen the errors in your post! I will stand with my original assessment of the problem. T_Bone<----Retired Engineer   [Reply]   [No Email]
T_Bone 12-24-2008 09:00:18 4.254.161.66 2867 Report to Moderator	Re: D rings in reply to Plumcrazy, 12-22-2008 04:39:43   Hi Pc, Even if your frame had 3"channel cross members, attaching a "D" ring to a single cross member would NOT have the structural strength needed for a 5000# tractor that is 4 pointed tied down. You would need too attach too two 3" cross members with a intersecting 3" channel between the cross members for "D" ring attachment. Just guessing here as I've never seen your trailer but just wanted to make you aware that you will most likely be underrated on the "D" rings, more probable than not, for a 5000# tractor. T_Bone   [Reply]   [No Email]
jd plowboy 01-01-2009 17:02:06 98.134.84.191 2904 Report to Moderator	Re: D rings in reply to T_Bone, 12-24-2008 09:00:18   i dont think i would anchor them in wood but if they are anchored solid i dont think it would be a problem. i have the tiedown anchors on my trailer from tsc and i havent had any problems. have been using them for 5 years now. has anyone ever looked under some of these so called factory built trailers. the ones i looked at are only welded on 2 sides of the braces and some places only one side. the trailers i built are welded on all for sides of everypiece of metal and that is probably why they weigh so much but i dont think mine would come apart.   [Reply]   [No Email]
jd plowboy 12-22-2008 12:21:46 98.134.28.161 2861 Report to Moderator	Re: D rings in reply to Plumcrazy, 12-22-2008 04:39:43   i have 2 trailers i built. one is a 35 ft deckover and the other is a 32 ft x 7 ft wide. i used the 11,000lb suface mount anchor ring on the 35 ft one every 2 ft apart. on the 32 ft trailer i used the 3/8 welded ring that is 5000lb capacity every 2 ft apart and when we haul our tractor we strap them with 4 straps each and we havent had any problems with them or anything else we hauled moving. the rings are welded to the trailer every 2 ft apart.   [Reply]   [No Email]
john in la 12-22-2008 08:30:12 72.150.16.117 2859 Report to Moderator	Re: D rings in reply to Plumcrazy, 12-22-2008 04:39:43   I agree with the bracing. The D rings will not be a problem but what you have them mounted to will determine the weight they will hold.   [Reply]   [No Email]
Plumcrazy 12-22-2008 10:38:49 75.100.206.76 2860 Report to Moderator	Re: D rings in reply to john in la, 12-22-2008 08:30:12   It has a wood deck, so I will definetly have to bolt the anchors through crossmembers. Good idea about useing a better quality anchor. I see T.S.C. has some heavy ones. Thank's guy's.   [Reply]   [No Email]
Orangefever 12-22-2008 06:56:24 64.53.88.82 2858 Report to Moderator	Re: D rings in reply to Plumcrazy, 12-22-2008 04:39:43   if possible you might try to pick up a cross member under the deck this would give you a little more security when mounting your tie downs. one good pot hole is no match for 5000lbs and a board holding it   [Reply]   [No Email]
rhettcale 12-22-2008 05:00:20 76.240.203.156 2857 Report to Moderator	Re: D rings in reply to Plumcrazy, 12-22-2008 04:39:43   for something like that i dont like harbour freight. mainly because i dont know who they get them from an the quality of the forging process. i dont think you would go wrong getting them from a local trailer supplier/dealer, Tractor Supply Co or from an online source like Buyers, or Waymire. but realative to size 1/2 inch should be good. and go with no less that 4 one for each corner   [Reply]   [No Email]