Bumper thickness - Pirate4x4.Com : 4x4 and Off-Road Forum

sanyi83 · 05-14-2002, 11:32 AM

.120 steel is thinner that 3/16th's right? how much thinner? I am thinking of buying this bumper but not sure if I want to spend the money on something that wimpy.

Jonathan M · 05-14-2002, 11:38 AM

3/16 = 0.1875.....................

cj8scrambld · 05-14-2002, 03:04 PM

.120 is slightly thinner than 1/8th inch. 1/8th inch would be .125..1/4 inch is .250. Hope that helps. That is kinda thin for a bumper IMHO. john

Sharp · 05-14-2002, 08:57 PM

3/16" is ideal, it's lighter then 1/4" which IMO would be overkill and is way stronger then 1/8" which is around .120.
i have built my bumpers and skids and most of them are 3/16" and it's real beefy, 1/8" will not cut it, and i made my rockers of 1/4" i wish i had gone with 3/16" cause they are too heavy and 3/16" would have been strong enough.

HTH

66CJdean · 05-14-2002, 09:08 PM

My bumpers and frame are all made of .120 and it works fine. You can dent in the .120 if you try hard enough so .188 would be just right. .250 is overkill and just extra weight to me.

64Trvlr · 05-14-2002, 09:17 PM

I'm building mine out of 3/16" tubing.

hy_desert_4wheeler · 05-15-2002, 05:26 AM

Quote:

Originally posted by 64Trvlr
I'm building mine out of 3/16" tubing.

Is that for your RC car/truck??and would that be copper-steel -or SS?? I used 3/8 SS for my fuel line and 1/4 SS for my return line..

YJ4RoX · 05-15-2002, 05:45 AM

.120 steel is 11 gauge. just a little thinner than 1/8"
IMHO 3/16 is ideal for bumpers and rockers. Although 1/4 is commonly used on rockers. Personally i used 7 GA plate for my rockers it measures .1793" Just a little lighter than 3/16 and it takes a hell of a beating.

For bumpers go 3/16"

64Trvlr · 05-15-2002, 07:27 AM

Quote:

Originally posted by hy_desert_4wheeler
Is that for your RC car/truck??and would that be copper-steel -or SS?? I used 3/8 SS for my fuel line and 1/4 SS for my return line..

This is for my Jeep. The 3/16" tubing I was talking about, is 3/16" wall 2"x4" mild steel tubing for the bumpers. The fuel line is 3/8" steel tubing as mine has a carb there is no return line.

sanyi83 · 05-15-2002, 05:35 PM

I would love to make my bumpers out of 3/16th but I don't have the time for it. And buying bumpers from Bulletproof is out of the question. They are way too expensive. I still might make bumpers. Something I am curious about is how to make the hinge for the rear carrier. and how to secure it so it dosen't rattle. Pics would be helpful.

arndog · 05-15-2002, 05:59 PM

also keep in mind the thickness of your frame. If your bumper is thicker then your frame what bends first?

arndog

sanyi83 · 05-15-2002, 06:07 PM

good point.
Also with the rear bumper how would I go about putting in a receiver hitch? Would I have to cut it out of the tubing and weld in a piece?

slowJEEP · 05-16-2002, 08:21 AM

Quote:

.120 steel is thinner that 3/16th's right? how much thinner?

To eliminate similar problems in the future I want to share w/ you a useful trick. Go find a calculator and hit 3 then / then 16. after you hit the = symbol you will get a number. This is the decimal value for the fraction. Subtract the two decimal values and you will find "how much thinner" the steel is.

The first lesson is free.

64Trvlr · 05-16-2002, 03:07 PM

Quote:

Originally posted by sanyi83
I would love to make my bumpers out of 3/16th but I don't have the time for it. I still might make bumpers.

If you might make bumpers, why don't you have time to make them out of 3/16" steel?

Also with the rear bumper how would I go about putting in a receiver hitch? Would I have to cut it out of the tubing and weld in a piece?

Yes...........................

05-14-2002, 11:32 AM	#1 (permalink)
sanyi83 Registered User Join Date: May 2001 Member # 4897 Location: San Jose, CA Posts: 290	Bumper thickness .120 steel is thinner that 3/16th's right? how much thinner? I am thinking of buying this bumper but not sure if I want to spend the money on something that wimpy.

05-14-2002, 11:38 AM	#2 (permalink)
Jonathan M Registered User Join Date: Jun 2001 Member # 5393 Location: Canada Posts: 137	3/16 = 0.1875..................... __________________ 89 YJ in pieces............42's w/ rockstomper beadlocks, CJ front clip & dash, 60/14, 350 with GM TBI, RV cam, and 305 heads 700R4, dana 300, F-150 springs on all 4 corners and 105" wheelbase......

05-14-2002, 08:57 PM	#4 (permalink)
Sharp Registered User Join Date: Nov 2001 Member # 7980 Location: Edmonton AB Canada Posts: 1,064	3/16" is ideal, it's lighter then 1/4" which IMO would be overkill and is way stronger then 1/8" which is around .120. i have built my bumpers and skids and most of them are 3/16" and it's real beefy, 1/8" will not cut it, and i made my rockers of 1/4" i wish i had gone with 3/16" cause they are too heavy and 3/16" would have been strong enough. HTH __________________ '00 TJ Built, locked, lifted and armored

05-14-2002, 09:08 PM	#5 (permalink)
66CJdean Pirate4x4 Addict! Join Date: May 2000 Member # 940 Location: Lincoln, Ca Posts: 6,398	My bumpers and frame are all made of .120 and it works fine. You can dent in the .120 if you try hard enough so .188 would be just right. .250 is overkill and just extra weight to me. __________________ WWW.PCRYO.COM Deep Cryogenic Tempering Service Find all my products at www.KICKASSOFFROAD.COM 916-434-6978 Custom Axles built to order. Got 40 spline? I have the hubs, spindles, and axles you need to kickass! Custom Hummer wheels and centers Axle Resplining

05-15-2002, 05:59 PM	#11 (permalink)
arndog Rock God Join Date: May 2000 Member # 764 Location: Seattle, WA Posts: 2,213	also keep in mind the thickness of your frame. If your bumper is thicker then your frame what bends first? arndog __________________ 1966 FJ40 cruiser page

05-14-2002, 03:04 PM	#3 (permalink)
cj8scrambld Rock God Join Date: Mar 2000 Member # 343 Location: Conway, MA US Posts: 1,949	.120 is slightly thinner than 1/8th inch. 1/8th inch would be .125..1/4 inch is .250. Hope that helps. That is kinda thin for a bumper IMHO. john

05-15-2002, 05:45 AM	#8 (permalink)
YJ4RoX Registered User Join Date: Oct 2000 Member # 1930 Location: Leon, WV Posts: 3,260	.120 steel is 11 gauge. just a little thinner than 1/8" IMHO 3/16 is ideal for bumpers and rockers. Although 1/4 is commonly used on rockers. Personally i used 7 GA plate for my rockers it measures .1793" Just a little lighter than 3/16 and it takes a hell of a beating. For bumpers go 3/16"

05-15-2002, 05:35 PM	#10 (permalink)
sanyi83 Registered User Join Date: May 2001 Member # 4897 Location: San Jose, CA Posts: 290	I would love to make my bumpers out of 3/16th but I don't have the time for it. And buying bumpers from Bulletproof is out of the question. They are way too expensive. I still might make bumpers. Something I am curious about is how to make the hinge for the rear carrier. and how to secure it so it dosen't rattle. Pics would be helpful.

05-15-2002, 06:07 PM	#12 (permalink)
sanyi83 Registered User Join Date: May 2001 Member # 4897 Location: San Jose, CA Posts: 290	good point. Also with the rear bumper how would I go about putting in a receiver hitch? Would I have to cut it out of the tubing and weld in a piece?

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