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post #1 of (permalink) Old 03-14-2004, 01:37 AM Thread Starter
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Reinforcement of stock Sammy bumper tube

(I couldn't search for this topic...didn't know what key words to use.)

I'm fabbing a custom front bumper/grill guard...I have an after-market tow bar attachment bracket across the front of my Sammy's frame and a grill from 1967 Dodge Power Wagon. The grill looks like a heavy duty grill guard, and it's the EXACT same width as the tow bar bracket. I'm going to have uprights welded to the tow bar bracket to hold the grill guard, then put a piece of channel iron across the uprights for a bumper. My plan is to mount a Hi-Lift jack on the bumper, and a 2" hitch receiver to the top of the tow bar bracket.

My question is; what do I use to reinforce the stock bumper support tube...I've already cut the tube back to 1" from the front leaf spring mount/frame. Should I use galvinize pipe or structural tubing to go through the original bumper support tube? An earlier post mentioned driving some type of tubing through this bumper support, but it did not say what kind. Any guesses on the size? My original support tube is rusted through in some places, how do I get the rust out? I'd like to keep it from rusting again. Suggestions....
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post #2 of (permalink) Old 03-14-2004, 02:23 AM
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Re: Reinforcement of stock Sammy bumper tube

ummm little confused but id mount the bumper to the frame not the support tube bolt it weld it you name it . now if rust is your problem id cut the old suport out welded anohter 1 in out of atleast scheldule 40 tubing or even well pipe thats sum thick pipe put i would not use galvinsed
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post #3 of (permalink) Old 03-14-2004, 10:14 AM
 
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Re: Reinforcement of stock Sammy bumper tube

standard pipe fits thru the crossmembers (I dont recall the size ) just meashure the tube diameter and go by a steel distributer and tell them what size it needs to go inside of (pipe is meashured by the inside diameter so 1-1/4 pipe is 1-1/2 outside) I got what they called black pipe
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post #4 of (permalink) Old 03-14-2004, 10:37 AM
 
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Re: Reinforcement of stock Sammy bumper tube

I believe szki272 is right about 1-1/4" Sch 40 Black pipe being the right fit to go inside the existing tube.

</font><blockquote><font class="small">In reply to:</font><hr />
Should I use galvinize pipe or structural tubing

[/ QUOTE ]

NEVER use gavanize material if your going to be welding on it. It puts out very dangerous fumes.
If you must weld on galvanize, remove the galvanize, from both sides, before striking an arc.
You can grind it off or use Muratic acid (swimming pool acid) to rmove it. Save the acid, it converts
from muratic to zinc chloride, and is usefull as a soldering acid for copper and brass. Think
Radiators... When the acid stops reacting to a zinc product, its fully converted to zinc chloride,
and won't work for removing galvanize any more, but is perfect for soldering brass...


</font><blockquote><font class="small">In reply to:</font><hr />
My original support tube is rusted through in some places

[/ QUOTE ]

Doug is right, If the tub is in that bad of shape. cut it out and weld in some .120-.187 wall tubing,
probably 1-1/2 or 1-3/4" OD

Material sizes: Pipe is measured by the ID (Inside Dia), tubing by the outside, tubing comes in OD's
that are more predictable, pipe OD's are all over the map. Black pipe and gavanize pipe are the same
pipe, with and without galvanize.
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post #5 of (permalink) Old 03-14-2004, 10:47 AM
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Re: Reinforcement of stock Sammy bumper tube

outlawms wrote:
</font><blockquote><font class="small">In reply to:</font><hr />
I put out very dangerous fumes.


[/ QUOTE ]

remind me not to stand behind you, then.

[img]images/graemlins/shocked.gif[/img]

~daxe
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post #6 of (permalink) Old 03-14-2004, 10:51 AM
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Re: Reinforcement of stock Sammy bumper tube

Daxe, you AND YT slay me!!!!!!!! [img]images/graemlins/grin.gif[/img]
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post #7 of (permalink) Old 03-14-2004, 11:55 AM
 
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Re: Reinforcement of stock Sammy bumper tube

Misquote! Misquote! I never said that! manipulation of the press! [img]images/graemlins/cussing.gif[/img]

[img]images/graemlins/chairfall.gif[/img] [img]images/graemlins/chairfall.gif[/img] [img]images/graemlins/chairfall.gif[/img]

Don't worry Daxe, I don't get mad, I get even! [img]images/graemlins/spank.gif[/img] LOL

[img]images/graemlins/goodpost.gif[/img]

You even made me look to see If I typo'd [img]images/graemlins/thud.gif[/img]


[img]images/graemlins/40BEER.gif[/img]
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post #8 of (permalink) Old 03-14-2004, 01:14 PM
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Re: Reinforcement of stock Sammy bumper tube

I didnt say that. It was my 2nd mouth talking.



~daxe
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post #9 of (permalink) Old 03-14-2004, 10:45 PM
 
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Re: Reinforcement of stock Sammy bumper tube

Doesn't that get a bit messy when your drinking beer? [img]images/graemlins/shocked.gif[/img] Espesially when you've had a few? [img]images/graemlins/40BEER.gif[/img]
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post #10 of (permalink) Old 03-15-2004, 02:46 AM
 
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Re: Reinforcement of stock Sammy bumper tube

BigElecCat,
The original tube size is 48.6mm O/D by 44mm I/D giving you a 2.3 wall thickness. I've replaced mine (well my mates one that he breaks then I fix it [img]images/graemlins/confused.gif[/img]) with some 48.5mm O/D by 37.7 I/D increasing the wall to 5.2 all so I have put crush spacers into the Frame and plated each side with 10mm plate bored around the tube to allow the new bumper to fix to when I get around to making it.
If you want an clean easy way to remove the existing tube, grind it flush with the frame until you can just see the "fracture" line between the tube and frame (see red arrow) then after you have done both sides of the frame hit it with a chisel where the green arrow is. It will scroll up like a snail shell and leave a nice round hole to feed a new one into.

Shane
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