Cheap 72w Light Bar Teardown - surprise it's not 72w

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Bought this LED light bar to benchmark it and use as part of a proof-of-concept for a system I am designing.
Royalty Free / Creative Commons music was credited. Other music is licensed by Mega Mechatronics for non-exclusive worldwide perpetual use.
*This video is for educational purposes only, Mega Mechatronics cannot be held liable for damaged parts, loss of equipment, and personal injury or death, related to the information contained in this video and the scope of information expressed.

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Опубликовано:

1 апр 2016

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Комментарии : 34

@jacobhauenstein Год назад

Awesome video, exactly what i was looking for. I wasn't expecting the design to have as much thought about heat dissipation as it actually did. Still a pretty crude product, but they are usually sold extremely cheaply.

@mikesimpson6757 7 лет назад

They are still putting better light than my stock light does. all for 30 bucks with fuse protection.

@oceanhouse8080 6 лет назад

nice review, this is the exact kinda of tests, I do with every light bar I come across and surprise surprise if you divide the power consumed by the number of chips you always end up with a very small fraction of what is claimed typically .5 watts per chip with the current generation of cheap light bars at the $20 to $50 price point, though it was not always like that, some of the early light bars actual where in the 1 to 1.5 watt per chip range, i miss those old bars lol .... These days i will not buy a light bar if they fail disclose the power consumption in amps at both 12 and 24 volts......... only a few companies do this tuffstuff is one of them... i plan to get one of there bars and test there ratings....

@neilcrompton3488 2 года назад

On some light bars the tiny screws hold down (pinch) the gaskets that seal the clear lens,this one didnt have gaskets or they were removed by someone else.

@MegaMechatronics 2 года назад

The gaskets shrunk after disassembly, manufacture must stretch them a bit when torqueing those bolts, probably saves them 20% in material costs.

@WR_CTorch 6 лет назад

Can you please tell me who/where you ordered the 1/8” Santoprene Rubber Rods from? Thanks!

@MegaMechatronics 5 лет назад

McMaster-Carr

@1SGBob1 4 года назад

While watching this, a thought occurred. Is it possible to interpolate the torque used to put something together by somehow measuring the release torque?

@MegaMechatronics 4 года назад

Yes, I was involved in a few different benchmarking projects for automotive components at work and we measured break away torque using a digital torque wrench for every fastener. The torque readings should be slightly higher than the tightening torque, to be accurate you'd need to study the friction of the interface materials and any plating or thread locker to more accurately estimate reverse engineer it.

@nathan00campbell 6 лет назад

can i get a link to that gasket material you used. ive got the same issue with the lense gaskets not being reusable

@MegaMechatronics 5 лет назад

McMaster-Carr silicone

@timramich 7 лет назад

You'd think it would be cheaper for them to use the boards from the small 6-LED lights and just wire them up together inside the unit, instead of one giant board. That would make it easier to mod for a separate flood and spot selection.

@timramich 7 лет назад

Eh, maybe not, since then there would be a bunch of converter circuits, instead of one.

@MaXimus666789 7 лет назад

Is this generic or actually Auxbeam? I'm making 18650 battery pack and trying to work out the Amp Draw / ah.

@jasonmorehouse3756 6 лет назад

auxbeam is a cheap generic

@Mitch_Bierma 6 лет назад

I’m doing the same thing. Did you find a resolution to your issue? Would love some insight. I’m using nearly this same light bar

@PowerlineRider 7 лет назад

hey cool you use inventor also i use it in engineering class

@hmata3 8 лет назад

I think you could've removed the five screws on each side of the bar. These would allow you to remove the metal strips that hold down the clear front shield.

@MegaMechatronics 8 лет назад

+hmata3 At 2:18 I pause the end view, please note those 'metal strips' are actually part of the extrusion. The ends of each screw actually bottom out on the lens, horrible design as it does not spread out the load.

@Francois_Dupont 5 лет назад

i bought a 126W~ one, its actually 40watt~ for those interested i installed it on my car, because the stock headlight were garbage and now that the plastic is fading its even worst. i couldn't even see the line on the road when i bought the car and feared to drive faster than 50km/h as it was too dangerous. i added the 142W light bar on the high beams. so i can turn them ON/OFF not to blind other drivers.

@juliogonzo2718 5 лет назад

That's how I wired mine in my work truck. High beam fuses were only hot with high beams on, so I used a "add a circuit" fuse block tap to fire a relay. I also have a switch on the dash to "arm" the light. That way I can also use high beams without led to signal other drivers

@MaxCaissie 6 лет назад

Link? Or name and price?

@pauljensen5284 3 года назад

Silicone sealants and grease are not compatible with polycarbonate plastic. It will cause the plastic to craze and crack. Look for leak failures in the future.

@naveedraja4654 6 лет назад

China lights are very good and affordable

@maxwell6774 3 года назад

JUNK, and take jobs from our own peole, mine is buzzing like crazy, is 30 inch and 150W, but my 55w halogen shine way brighter.

@misterfreeze8444 8 лет назад

any chance this could be made into a 3-wire setup? Isolating the 12 LEDs that are supposed to be spot beams would be awesome.

@MegaMechatronics 8 лет назад

I think you could get some custom boards made and reverse engineer the locations of the new LEDs to match the reflectors. This way you could probably do anything you want with the LEDs. Good idea Mr. Freeze.

@misterfreeze8444 8 лет назад

It was easy and works well. I was able to isolate the LED's by severing grounds on the printed board. I now have high and low beam for my motorcycle

@mrnobody329-kevin6 6 лет назад

most light bars say 10 - 30 volts. more volts more watts.

@goofygal27 6 лет назад

No. Watts remain the same. As voltage increases, amps decrease. A lightbar @ 12v will draw 2x as many amps as the same bar on 24V...

@mrnobody329-kevin6 6 лет назад

I just finished testing my light bar. 1st 12 volt. 2nd 24 volt. the light got twice as bright on 24 volts. more volts more power...

@goofygal27 6 лет назад

Mr Nobody329 that's not how it all how it works. If it's getting brighter because you put 24 volts to it, then it's either not a multi volt light bar or the integrated regulation circuit is shit.

@MaxCaissie 6 лет назад

Mr Nobody329 ur a fucking idiot

@matthewfiedler2787 2 года назад

Well Ive seen some lights get brighter on more volts as well and why I don't know but with my limited but still more than average knowledge I don't think it should do so. It should only use less amps. It doesn't increase the wattage but even if this was possible to do so your LEDs are rated at a certain wattage and you will burn em out way faster running more than it's max rated wattage. So why in the fuck would you want to do this? I like my stuff to last as long as possible while working properly at the same time. But hey the state of Texas says the last grade I successfully completed was the 7th grade but I went to high school somehow ended up with a GED and an associates degree so don't listen to me with a 7th grade education🤣