CK5
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Deuling's 1985 K5. "Restart thread on post #8415"

Well you were going for old school desert truck.

The truss the bumper and the fact that's its an 80d Blazer knocks that one outta the park.

Very old school racerish looking.

I like the overall look it's getting too

Honestly, I have been waiting on comments from you on my purposed dead node on the bumper bars connected at the engine hoop....
 
Honestly, I have been waiting on comments from you on my purposed dead node on the bumper bars connected at the engine hoop....


Well you have reasoning behind your design.

Dumb reasoning, but reasoning nonetheless
 
Well you have reasoning behind your design.

Dumb reasoning, but reasoning nonetheless

I want your full opinion.

My thought was, if I tie it into the shock mounts, it is going to transfer a hard hit directly into me and my passengers through the cage (aka Shannon), and that could be bad. Don't care so much about me, but more her.

If I have a dead node, it will hopefully be absorbed by the engine bar that can easily be cut off and replaced.

I'm not really thinking about if I rear end someone or hit a deer. It's more I get stupid and out of control and run into a tree or something significant that will not move or break.
 
If it is a terrible design or idea, I can always add some bracing, I just thought a failure point would be a good idea on a bumper.

Even my dad who is a mechanical engineer looked at my design and called out a "designed fail point" before I even told him why I did it...
 
How the engine cross bar sits, the only casualty will be the air cleaner. I have it tucked in far enough it would avoid the master cylinder.
 
So crash forces are hard to understand. Hitting a tree 18" wide is very different than hitting a granite wall twice the width of your truck.

In my mind your creating an upward bending motion on the frame in the event of a serious head on type of collision.

The problem I see with that is the possible relocation of the drivetrain. Bend the frame far enough and in a split second your engine is moving on its own.

The importance of crash safety was not super high when the square body Blazer came out. I don't think there is much you can do to mitigate forces enough to prevent some level of injury.

But there is alot you can do to prevent deflection of the basic structure surrounding you and your passenger. If the structure surrounding you collapses your liveable space contracts.

Now beyond all of that in the much more likely event you nosedive over something hard due to misjudging a jump or incorrect brake or throttle application while in the air, put that bumper into its digging mode I can see it bending and moving around. In that situation you have increased the chance of bending your engine bar.

So in a nutshell I just don't think there is any injury mitigation due to that bar bending. So many other things will be bending the force will still be transferred.

Tighten up the belts. You know like take a deep breath, let it out, then pull them belts tight.
 
Makes sense. Hope I never have to test it.


Just an FYI, the back of the shock mounts have a tube running down to the A pillar frame mount tie ins. Which are .188 wall, and welded to frame and then fish plated over and welded again.
 
Makes sense. Hope I never have to test it.


Just an FYI, the back of the shock mounts have a tube running down to the A pillar frame mount tie ins. Which are .188 wall, and welded to frame and then fish plated over and welded again.

When your talking about serious crash forces I'm not sure my knowledge goes to far that direction.

I hope you never have to test your idea either

As long as everything is working together to stiffen up the truck all will be good
 
Tow points are genius... I was dreading hearing the flack from my wife when I ordered mine but she will be really happy when I build ones like you did. I think waaaaaay too hard sometimes.
 
That bumper turned out awesome and fits your blazer. Everytime I see it looks even better. Hopefully you never need something that stout but looks killer. Something you dont see very much of.
 
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