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  1. #1
    Join Date
    Nov 2007
    Location
    Appleton WI
    Posts
    59

    Default RV bumper reinforcement.

    I can post some pics later, but I just wanna toss this idea out before I run out the door to work. Our bike rack has caused a weld to crack on our camper. While repairing the cracked weld won't be a problem, I want to reinforce the bumper to prevent this from happening in the future. My initial thoughts were either making a brace from the rack to the frame, and/or 2 1/4" thick gussets on each side of the bumper to frame joint. I'm lookin for some ideas. I don't want to make the brace if I don't have to. The bumper is 4x4x1/8" I believe. Also is there a way to reinforce the section of bumper where the rack is clamped to the bumper. It's crushed just a bitfrom the twisting caused by the bouncing of the rack. Thanks.

  2. #2
    Join Date
    Sep 2005
    Location
    Salem ,Ohio
    Posts
    3,896

    Cool

    I just did one for a bike rack and had i not went back a few crossmembers with some tubing the whole works prob would be on the ground. Those 4x4 bumpers are just there to hold the sewer hose and not much more. So check it out real good underneath and brace and weld where needed. Some of them are just welded with some little short beads too...Bob
    Bob Wright, Grandson of Tee Nee Boat Trailer Founder
    Metal Master Fab Salem, Oh 44460
    Birthplace of the Silver & Deming Drill
    1999 MM185 w/185 Spoolgun,1986 Thunderbolt AC/DC
    Spool Gun conversion. How To Do It. Below.
    http://www.millerwelds.com/resources...php?albumid=48

  3. #3
    Join Date
    Nov 2007
    Location
    Appleton WI
    Posts
    59

    Default

    Did you reinforce the 4x4 tubing or make entirely separate carrier? Also did you attach to the crossmembers or the framerails themselves.? And hopefully last question, what size tubing did you use?

  4. #4
    Join Date
    Apr 2009
    Location
    Cleveland, GA
    Posts
    8

    Default

    Subscribing also...

    I need to rig something up on the back of my camper to hold a rack also.
    Miller 180AS
    Standard Cart
    80 cu Ft Argon/ CO2
    Makita Chop Saw
    B&D 4 1/2 angle grinder

  5. #5
    Join Date
    Aug 2004
    Location
    Milan Michigan
    Posts
    1,684

    Default

    Those bumpers are usually only 14 Ga. I do a ton of these.

    #1 Thing is to drill an additional hole in the 2" reciever tube with a nut welded to the tube on the bottom so you can tighten the bolt to take the rocking motion out of the bike rack.

    Then weld a plate or a gusset from the frame to the bottom and top of the bumper.

    There have been some situations where I install a new 4 x 4 x 1/8 tube bumper.

    Its not usually the weight of the bikes that cause the problem, Its the rocking back & forth that fatigue the metal.

    There are a few different ways that I fix these, some times I add an additional cross member 6" up and attach the reciever tube to both members.

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