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More arb questions.
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Posted 4/5/2007 4:04 PM
KERR

Date registered: Dec 1899
Location:
Vehicle(s):
More arb questions.

So I lifted some pictures and measurements from the other forums...

while they talk about height and approach angles I cant find one single post that says how far the arb stick out. Any of you that can measure please let me know. My stock bumper in the stock location is 6.5 inches wide INCLUDING brush guard. From the grill to the out side of the bush guard its 7.7 inches...


I also measure from the rubber trim line in the photos and mine is 41 inches where as in the picture it's 38 inches.

So my question is with these other measurements it steams I could run a ARB bumper and not be far off if any from where I am now and if I do loose some approach angles I would still be better off than when it was stock.

Also by looking at these pictures could you not trim some of this bumper and regain the degrease of approach that you lost?




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#69167
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Posted 4/5/2007 4:35 PM
4x4abc



Date registered: Apr 2006
Location: La Paz, Baja California, Mexico
Vehicle(s): 02 G500
5000
RE: More arb questions.

brush guards

If you want them for looks - cool, I like them.
If you want them to push cows off the road - you'll be in trouble with PETA.
If you want them to fight brush - you'll be in trouble with the Sierra Club.

In terms of funtionality - all of them reduce the approach angle. Bad. All of them add weight. Bad.
#69175 - in reply to #69167
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Posted 4/5/2007 4:58 PM
hipine



Date registered: Jul 2006
Location: US, CO, Bailey
Vehicle(s): 460 1980 280GE w. 617A
5000
RE: More arb questions.

You can get "close enough for government work" by scaling between the two trucks in the first photo.  Your stock bumper is like the one on the left.  On my CRT, it sticks out about 1cm from the grille (with a little fudging for the camera angle).  On my CRT, the ARB sticks out about 2cm from the grille to the front of the roller fairlead.  So where yours is about 7" from the grille, the ARB will be about 14".

I've never been one for "bench racing" numbers like degrees of aproach angle, etc.  The bottom line is "does it do what you want?"  But just knowing a little about geometry and having worked with Q on this project pictured as well as other ARB installs, expect installing an ARB as done here to reduce your aproach angle by 5 or 6 degrees from what it is now.  If that ends up still being more than the 39 degree stock angle shown here, and that's important to you, cool, if not, or if it's not, hey, you make your own decisions.

-Dave G.

#69178 - in reply to #69167
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Posted 4/6/2007 1:33 PM
KERR

Date registered: Dec 1899
Location:
Vehicle(s):
Re: More arb questions.

Thanks dave...

I need to get a winch just dont want to shell out the money for the ORC bumper.. its currently about $1K more than a ARB before shipping and import taxes.

#69262 - in reply to #69167
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Posted 4/6/2007 2:05 PM
ThorThorThor
Member




Date registered: Feb 2007
Location: Highlands Ranch (Denver Metro), Colorado
Vehicle(s): 1992 Range Rover size L, 1995 Range Rover size M
Posts: 15

Re: More arb questions.

approach angles like RTI scores are interesting indicators but there is so much else going on. So unless you like to drive up the cement retaining walls under the highway underpass they are not the be all end all measurement. I prefer to also measure how much clearance the bumper has (vertically) in front of the wheel to see how big a rock can be swallowed or step can be mounted. This number should also be close to the silll clearance and the rear bumper clearance for maximum effect.

There are driving techniques to enhance your chances of making progress on tough parts of trails that can be learned that are much more important. Bill Burke in South West Colorado (near Moab!) does a nice job in training people who need to get places off the beaten path.

In the end get an ARB for the winch mount if you choose to run one. But It looks like you may be exposing your fender flares to some damage at the leading edge where the stock bumper protected them a bit. I have seen some twisted ARB bumpers from moderate hits on slickrock. I hope thier build quality has stayed good.

Good Luck!

Edited by ThorThorThor 4/6/2007 2:07 PM
#69264 - in reply to #69167
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