icentropy wrote:Howdy, this is a quick post just to warn anyone with an ibistek 78" light bar that the stock brackets (two sheet metal ones that attach to the windshield) are not able to handle even moderate off-road use.
I just got back from a weekend trip out to the desert. The lighbar snapped off the windshield on the third day! Since the day I mounted it I noticed the whole bar would move side-to-side quite a bit but never gave it too much thought. I figured I'd get around to securing it better some day. Well apparently it couldn't wait because on a dirt road last sunday, the right side of the lightbar itself snapped off. upon inspection the other side had stress cracks as well as both support brackets. You all might know aluminum does not fatigue well so a month of pavement driving and a few days of desert off-roading were all this thing could take before it gave way. I plan on making new brackets out of .25" tempered Aluminum that should keep the entire structure steady enough to avoid this problem, but since the light bar itself broke i'll not how to fix that as well.
So if any of you have an ibistek that is moving side-to-side i would suggest removing it ASAP and strengthing up those brackets before you break the bar itself. Wish i had.
On the other hand, the light coming out of the bar was awesome. the 6 HIDs worked perfectly, no issues at all and i was very happy with the lighting at night. I am still happy i bought and upgraded it, just wish i had upgraded the brackets before it caused damage.
axemann wrote:What about rubber mounting them like they do with off road racing lights to cut back on the vibration?
actionpaintball wrote:Standard rule of thumb [very generic] is that steel is 3X heavier, and 3X stronger (tensile) over aluminum.
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