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Question for welder/metal fab person

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by scavenger, Apr 23, 2001.

  1. scavenger

    scavenger 1/2 ton status

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    Hi,

    This is not Blazer related, but does have to do with a Chevy C50 dump truck. I just bought a skid loader and trailer that have a combined weight of 8500 pounds. I have to make up a hitch that will be attached to the rear frame of the dump truck, and be capable of handling this weight. I have 7 inches of bare frame at the end where the hitch would be fastened to, and there is 34 inches between the frame rails. I will have to drop the hitch approx 10 inches below the frame. I guess I really need to know what type of material / metal I should use, and any ideas for mounting and bracing. Also I will be welding a 2 inch receiver tube to this hitch which will enable me to use a pintle hook adapter plate. Thanks for any info you can provide
     
  2. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    I would use a dedicated pintle hitch for that. We used to box the entire rear of the frame and then gusset the sides up to the frame as well. Looks like a 3 sided box from above. We used to use T-1 for that but it was for hauling a transfer trailer behind a full sized Dump truck. The material thickness we used was 3/4". We also used 3/4"x3" flat bar stiffeners near the bolts for the pintle hitch on the inside of the plate to reduce flex in the plate...

    I wish i had pics...


    Rene

    [​IMG]<A target="_blank" HREF=http://jules.coloradok5.com>http://jules.coloradok5.com</A>
     
  3. Butch

    Butch 1/2 ton status

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    Rusty gave you good info, but I would suggest bolting it to the frame if you can and welding all the other parts. Welding to a frame when vibration is a big factor will cause the welds to crack and that is not good. Plus you are always better off if you dont have to weld on a frame at all.

    I thought I was wrong once,
    but I was mistaken
     
  4. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    We welded it, but at the rear of the frame behind the suspension it really isn't an issue. These were heat treated frames too...of course if you're not comfortable doing that then just bolt it. Use grade 8's though!

    Rene

    [​IMG]<A target="_blank" HREF=http://jules.coloradok5.com>http://jules.coloradok5.com</A>
     
  5. scavenger

    scavenger 1/2 ton status

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    Thanks for the info. Now I just need to round up the materials and go at it. Does anyone have any idea what size, and how may bolts I should use to fasten the dropped hitch to the frame.....Thanks
     

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