is this normal?- trailer slight sag..

Discussion in 'Trucks and Trailers' started by mowisme, Mar 17, 2010.

  1. mowisme

    mowisme LawnSite Senior Member
    Messages: 910

    I bought a used tandem axle trailer recently. I'm in process of re-burnishing it. While I had it propped up in air I removed all the boards to clean frame up. While the axles were suspended in air I noticed the sides of frame dipped in center slightly from the weight of axles hanging there. (keep in mind all boards are off) that it is back on the appears to sag slightly down at rear (oppisite it did suspended) But..The frame is 2"x 3" (3/16") rectangular tubing. Would not that be as strong as 5" or 6" angle iron frame? Is this because the boards aren't on there to help support the weight of the metal? There isn't a ramp on it yet- seems that will add to the sag? trailer is 14ft long. Note: no side rails added yet either- will be thou..their made, but not welded on yet.
  2. doubleedge

    doubleedge LawnSite Senior Member
    from ND
    Messages: 911

    It will probably be fine when the boards are back in place.
  3. South Florida Lawns

    South Florida Lawns LawnSite Platinum Member
    from usa
    Messages: 4,784

    Thats normal. Trailers especially the light duty 7k like yours flex like that all the time.
  4. MikeKle

    MikeKle LawnSite Platinum Member
    Messages: 4,253

    You will be amazed how much stability the boards add to a trailer.
  5. mowisme

    mowisme LawnSite Senior Member
    Messages: 910

    Thanks- I thought that things were ok..It does appear to be a factory trailer..but then I have yet to see any numbers stamped in it- but I feel confident things will stiffen up once I add boards and the rail all around now that you guys responded. Geno

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