Bumper CAD design in progress - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 General Tech Q&A > Off-Road

Off-Road For suspension, wheel, and tire questions DIRECTLY related to Off-Roading.

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  #1  
Old 05-25-2007, 04:12 PM
the roadie's Avatar
the roadie the roadie is offline
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2004 GMC Envoy SLT "Roadiemobile"
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Bumper CAD design in progress

Let's see if the mods smack me for using a suspension subforum for this. After all, this forum is the clubhouse for my offroad buddies.

Anyway, after weeks of working on other stuff besides mine, my designer/fabricator Al just started sending me CAD files for review. After I approve something close, he'll print out the pieces on paper, tape them to cardboard, and we'll assemble the test article.

Not sure if this will happen tonight, or early next week, but here is the CAD at its current state. My comments are in yellow, mostly to get the lower edge raised up to get more approach angle right in front of the tires. The 2" receiver will be centered to carry my Warn Multimate winch carrier - so I won't have to carry it around all the time. Might save 0.1 MPG.

Please comment, even though these are early renderings and the frame mounting plates aren't designed yet.

My first ever hand-drawn concept, from almost exactly one year ago:


Front:


Rear:




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  #2  
Old 05-25-2007, 05:13 PM
VsToy VsToy is offline
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2003 Chevy TrailBlazer LS
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Looking good!!! What about this line instead? May give you a better approach to larger rocks. Just an idea... Have a good weekend!

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Old 05-25-2007, 05:19 PM
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Quote:
Originally Posted by VsToy View Post
Looking good!!! What about this line instead? May give you a better approach to larger rocks.
Good question. Even if I could approach and climb onto larger rocks, where do they go after you get the wheel onto them? Onto the rock sliders, which are 14" or so off the ground. I'd rather hit the bumper as a clue if I didn't get out to spot such a large rock anyway.

Second, I need some vertical structure there to add back in the Envoy cornering lghts. TBs don't have those, I don't think. Lots of custom bumpers have fog or driving lights built-in. I might be the first to have cornering lights.



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  #4  
Old 05-25-2007, 05:26 PM
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ieatglue ieatglue is offline
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It looks too squarish I was thinking something like that with a fiberglass cover But it's your project
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  #5  
Old 05-25-2007, 07:56 PM
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JamesDub JamesDub is offline
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Looking good Roadie .
I believe you had said another buddy of yours with a TB was also having one fabbed up correct ?

James
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  #6  
Old 05-25-2007, 08:36 PM
the roadie's Avatar
the roadie the roadie is offline
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Teebes is possibly Al's second customer. But Al is a slow son of a gun, and just took off for the weekend with the family for a holiday without finishing the CAD, so we can't start the cardboard. Darn families. They get in the way of a lot of good modding.

BTW - how's the bionic elbow?!?!?!?!



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  #7  
Old 05-25-2007, 09:32 PM
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unkljon unkljon is offline
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looks good roadie, I'm sure your looking forward to using the front TOW points....

I just ordered my new, and oh yes larger tires.

MAXXIS BIGHORN's 32"s

Shipped out today!!

And yes, I will post some pics next weekend... next weekend
will be fun with mounting and balancing these new 32"s, installing my new sway bar end links, stabilizer bar bushings, and some minor cleanup work...

Roadie, if you ever talk to your rock slider guy in the somewhat near future, put in a good word for me and getting a set
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  #8  
Old 05-26-2007, 12:56 AM
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LawBlazer LawBlazer is offline
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Looks good Roadie. I like the design and I like your edit to give you a better approach angle.

Unkljon, you get those Bighorn's off ebay? I was thinking about getting a set before. Let us know how they turn out.
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  #9  
Old 05-26-2007, 01:15 AM
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chrisbar chrisbar is offline
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Quote:
Originally Posted by the roadie View Post

Front:
Are you adding a grille guard on top of the bumper or does that just represent your existing grille?

BTW: me likey alot!!
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  #10  
Old 05-26-2007, 08:57 AM
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Zibby Zibby is offline
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Great Job and keep us updated.. I usally fab my own bumpers...but only because I can never find everything one with everyting I want. Add no-one makes good bumpers for these things.

Yours looks perfect!
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