Bumper w/Fog Holes - Light Leakage - JKowners.com : Jeep Wrangler JK Forum
 
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post #1 of 19 Old 07-30-2014, 04:40 AM Thread Starter
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Bumper w/Fog Holes - Light Leakage

It's hard to put this into words, which I guess is why it's hard to find an answer when searching. I'm ready to get a front bumper and I'm down to a couple choices. The Poison Spyder Brawler Lite is one choice and I see that their fog light holes have tubes welded onto the back of the holes so the lights will flush mount onto the rear end of the tube. Theoretically, this will ensure all of the light exits the front of the hole instead of lighting up the back of the bumper.

Many bumpers simply add mount tabs behind the simple fog holes cut into the the front face of the bumper. Given most angular edges of bumpers, usually some parts of the light's circumference will sit fairly flush, while other parts will have a gap between the light and the bumper. Theoretically you might lose light out front and instead light up the area behind/under the bumper.

Is this a common issue? If so, how big of a deal is this? For comparison, the JCR Dagger Stubby would be another choice (and it doesn't have the mounting tubes).

Any reason to be concerned about this?

Thanks
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post #2 of 19 Old 07-31-2014, 06:16 AM Thread Starter
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Well crap! I guess I think about things a bit differently than most!

Hopefully this means that light loss in bumpers with recessed lights and only tab mounts isn't an issue.
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post #3 of 19 Old 07-31-2014, 07:15 AM
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Hmmmm ah yeah, light leakage huh?
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post #4 of 19 Old 07-31-2014, 10:26 AM Thread Starter
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Kinda sums me up I'd say! Well, I am an engineer after all.

But, after I thought about the possible issue, I did see that Poison Spyder addresses the concern on their site in their "design advantages" descriptions pertaining to that bumper . They note that this is why they added the tubes behind their fog light holes. So I can't be the first to think about this. Hmmmmm....
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post #5 of 19 Old 07-31-2014, 10:39 AM
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JK fog lights aren't effective enough for this to be a concern. I have the Dagger and hasn't been an issue.

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post #6 of 19 Old 07-31-2014, 11:42 AM
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JK fog lights aren't effective enough for this to be a concern. I have the Dagger and hasn't been an issue.
This is true, and then there's the fog light liquid level sensor problem that Jeep never fixed. At 35% liquid level the light back scatter refraction worsened which had an extreme adverse effect on the forward light progression angle and lessened the lumen intensity by 28%. The industry standard 37-1/2 degree bevel on the tube backside helped somewhat.

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post #7 of 19 Old 07-31-2014, 11:46 AM
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This is true, and then there's the fog light liquid level sensor problem that Jeep never fixed.
I keep a bottle of that fluid in my recovery bag next to the metric crescent wrench and the rotocoupler torque multiplier gauge.

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post #8 of 19 Old 07-31-2014, 11:55 AM
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I keep a bottle of that fluid in my recovery bag next to the metric crescent wrench and the rotocoupler torque multiplier gauge.
I keep a bottle as well, but it is the recently released medical grade which has been improved in clarity by the addition of common housefly eye liquid.

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post #9 of 19 Old 07-31-2014, 03:56 PM Thread Starter
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- Does the JK need DOT 3 or DOT 4?
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post #10 of 19 Old 07-31-2014, 04:03 PM
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*DOT9 is required, pssshh DOT4 is so 2010!
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post #11 of 19 Old 07-31-2014, 05:42 PM
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Honestly... I had the Brawler Lite with Fogs, pretty much no difference from the stock fog lights as faar as output even thoughh they are a little more recessed

I then swapped t a BFH and scrapped the fog lights, although once in a great while I will wish that I had some fogs mounted at bumper height I can count one one hand in two years where I said I wish I had some.

go with what bumer design is most appealing to you, and disregard and details regarding light leakage... pick the best bumper that has fog lights and be done with it

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post #12 of 19 Old 07-31-2014, 06:49 PM
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Ok Jerry, try this. Comes from a mustang forum, might give you an idea. Being that I'm married to an engineer turned wildlife biologist, I understand your angst. He turned his lightubes into coldair supply... DIY or a Rough Country hybrid bumper...a little over $300.
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post #13 of 19 Old 08-01-2014, 05:21 PM
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Quote:
Originally Posted by Jerry1 View Post
Kinda sums me up I'd say! Well, I am an engineer after all.

But, after I thought about the possible issue, I did see that Poison Spyder addresses the concern on their site in their "design advantages" descriptions pertaining to that bumper . They note that this is why they added the tubes behind their fog light holes. So I can't be the first to think about this. Hmmmmm....
Jerry, see if this calms your sleepless nights:

The light "leaking" was exiting the lamp housing at a near-useless angle, and probably would have ended up at a location and angle that did you no good if it had not leaked into your bumper (perhaps causing death wobble).

If you made a containment tube out of super-shiny unobtanium, the light exiting the lamp housing at a near-useless angle would bounce once or twice off said super-shiny unobtanium tube with zero light loss and probably still end up at a location and angle that does you no good.

While the light is now outside the bumper, there's a good chance you gain nothing from herding it through the gate if it's just gonna' sit in a corner of the pasture and lick its balls.

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Being that I'm married to an engineer turned wildlife biologist, I understand your angst. He turned his lightubes into coldair supply...
You're married to an engineer turned wildlife biologist, and he did this?

. . . I learn something new every day here
Not judging you - you geaux, girl!

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post #14 of 19 Old 08-01-2014, 05:44 PM
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He turned his lightubes into coldair supply...
And with this quote, all I could think of to bring this thread full circle was:

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post #15 of 19 Old 08-01-2014, 06:27 PM
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Typical fuckin' bullshit, nobody loves me as usual...

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Some folks are fine with being screwed over, perhaps finding confrontation to be more stressful than just living with whatever the problem is. These are excellent consumers, manufactured to the finest specifications.
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post #16 of 19 Old 08-01-2014, 07:24 PM
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Typical fuckin' bullshit, nobody loves me as usual...
We'll always have this:

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post #17 of 19 Old 08-02-2014, 07:31 AM
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Originally Posted by ExWrench View Post
Jerry, see if this calms your sleepless nights:

The light "leaking" was exiting the lamp housing at a near-useless angle, and probably would have ended up at a location and angle that did you no good if it had not leaked into your bumper (perhaps causing death wobble).

If you made a containment tube out of super-shiny unobtanium, the light exiting the lamp housing at a near-useless angle would bounce once or twice off said super-shiny unobtanium tube with zero light loss and probably still end up at a location and angle that does you no good.

While the light is now outside the bumper, there's a good chance you gain nothing from herding it through the gate if it's just gonna' sit in a corner of the pasture and lick its balls.


You're married to an engineer turned wildlife biologist, and he did this?

. . . I learn something new every day here
Not judging you - you geaux, girl!
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post #18 of 19 Old 08-02-2014, 07:43 AM
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Can the light leakage be transformed into rock lights ? Is the liquid from Colorado ?
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post #19 of 19 Old 08-02-2014, 07:46 AM
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OMG, well I guess it's out now and there's nothing I can say but yes......that's not a dick I have but a very large clit. Now if you don't mind I have some "Heauxin'" to go do. See if I can find some crybaby's.

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Cat killing would almost certainly decline if we were allowed to hunt liberals.
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Last edited by RubiCajun; 08-02-2014 at 05:44 PM.
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