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Constructive Criticism on Tubular Rear Bumper
- Thread starter SHAGGY101
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- Thread starter
- #2
The "plating in" would be like the side panels on our baja car here (not glamorous but it is the best picture that I have).
I like it. If it were me, I would plate in the sides.
While plating the sides may give it a more solid look, it also creates crevices on the back side for mud/water to sit in and corrode.
I'm sure I'm missing something here, but why go through the trouble of creating a unique tube design and then fill it all in with plate?
- Thread starter
- #6
That is a great point, I did not think about that.
I like the tube design. If you don't have a dark/black colored truck then I would paint the areas black that would show through the tubes. Ever see metal tech tube bumpers or Stan's (ncfj) bumpers? They're both really nice. Nice design
On the side wing tube supports, i would weld a triangular support from the plate down to the tube to strengthen the support.
- Thread starter
- #10
Thanks, I have a white truck but from the trim down is covered in a graphite color line x (the bumper will also be this color). Right not I do not have the rear bumper on and I think it looks fine, just need the extra protection. After what TM said, I don't think plating it in would be a great idea.
Are you saying weld in another member on the bottom from the frame mount to the node at which the front most member wraps up around the back of the wheel well? Hope that makes sense...
The front tube bumpers I've seen look good in that functional / badass sort of way. Worst case, you could add the plates as-needed to dress it up later.
Great work so far. One thing that concerns me is the area I marked in red. I would imagine that spot takes a lot of abuse when slamming the back end of the truck onto something. Granted, your design is tucked very well but on my non-high clearance bumper, the structural member running to the frame from the side is much larger square tubing. Maybe add some gussets?
Think the plate is a good idea for side. If you move plate from front to back side of tube frame then "crevices" are exposed and easily cleaned. Think you want the extra protection when rear end slides around near pointy rocks. I like the tube triangulation in rear, but wonder if it will be easy to get mud out.
- Thread starter
- #14
Those triangulated gussets are a great idea. I will definatly put those in the final design. As far as mud is concearned, it should nt make it any more of an issue that it already is.
Shaggy, what pfran drew is what i was talking about with the triangular portions. Just to give some added strength in the wing support.
+1 ... i do not like tubes only on the sides, plating in some fashion would look better imho,
i think you should do some calc's on the tubing on the side where the additional support has been pointed out by others as this would be a critical spot if it was impacted and having the tubes so close to the body. (On the side, how close to the body are the tubes?)
- Thread starter
- #17
As of right now, the tube is .25" away from the body on the sides, however, I may need to increase this as well as using some 1.5" x .25" DOM that I have for the bent member that attaches to the frame mounts. As far as calcs go, this would be a pretty complex problem as it occurs in 3 dimensions. I could use solidworks to do a simple static simulation of a force being applied at the worst possible point on the side wing (the node in the top left portion of the wing in picture 1 of my first post) to check its deflection. But I need to find the time as my computer would take a s*** and then roll around in it if I tried this.
Ill take a copy of those plans 
with dimensions!!! haha
with dimensions!!! haha
Will you be able to maintain the spare tire in factory location?
I might suggest the tube on the bottom of the wings be pushed to the outside of the body. They appear to curve in toward the frame rails, letting the corners of the body be in the opening. See pic #3 post 1. lower corners look exposed.
I might suggest the tube on the bottom of the wings be pushed to the outside of the body. They appear to curve in toward the frame rails, letting the corners of the body be in the opening. See pic #3 post 1. lower corners look exposed.