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Old 06-22-2017, 11:08 AM   #166
djmossm42
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Thanks for your orders! All bulbs are enroute and we expect to start shipping next week. All orders are shipped priority mail with signature service.

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Old 06-23-2017, 08:50 AM   #167
bmwman91
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Very neat. I have a few technical questions for ya.

1) At 4800LM/bulb, how does that compare to a typical 4300K 35W HID bulb's output?
2) Do you have a plot of the output spectrum? I'd like to see where these come in as compared to a Halogen (very good spectrum, lousy output) and Xenon (lousy-to-OK spectrum, good output).
3) What sore of free-air requirements are there for the heat sink loops? I have the stock plastic shields in place behind my headlights.
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Old 06-23-2017, 01:00 PM   #168
djmossm42
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Quote:
Originally Posted by bmwman91 View Post
Very neat. I have a few technical questions for ya.

1) At 4800LM/bulb, how does that compare to a typical 4300K 35W HID bulb's output?
2) Do you have a plot of the output spectrum? I'd like to see where these come in as compared to a Halogen (very good spectrum, lousy output) and Xenon (lousy-to-OK spectrum, good output).
3) What sore of free-air requirements are there for the heat sink loops? I have the stock plastic shields in place behind my headlights.

Hi thanks for the questions. I will answer to the best of my knowledge.

1. The R4 is rated at 4800LM and the R6 is rated @ 5800LM. The R4 in terms of raw bulb brightness is very close to a 35W HID setup and the R6 is right between the 35W and 55W. Of course there are other variables like the condition and quality of the reflectors in the housing etc.

2. Regarding the spectrum, if your are referring to the color spectrum, it is narrow at a tolerance +/- 500LM for the bulbs we offer. The color output is static and does not fluctuate. LEDs are designed to the desired specs. So if the the spec calls for 5000K and x lumens per watt, that is what they are designed to meet and are sorted out based on tolerances set by the customer. The phosphor (yellow coating) is how they achieve the color output. The thicker the coating the more yellow is introduced to the raw light color which is typically blue to violet. You will not see reds or greens emitted from the chip itself as with HID.

If you are referring to the spectrum as in width and coverage there are a lot of variables that can change how it is perceived. But in general LEDs are more directional and the peak output will be in the 110 degree range. The R4 bulbs are rated a bit higher over 150 degrees. The R6 is special because it fills the space where the least efficient light is with another bank of LEDs so there is light emitted every 90 degrees plus you have some overlap. As mentioned before, the actual output through the optics can enhance or diminish the light source depending on their condition and that applies to all bulbs.

3. Based on ongoing testing the requirements are loose. Plenty of air comes through the E30 grill so you definitely won't have any trouble. For reference, I installed a set of H8 R4 bulbs in my wife's E92 halos. The halos are enclosed and the N51 gets hot on its own and Im sure there isn't much cool air getting into the headlight housing. They have been installed for just about a year and have been through 100+ degree temps and still shine as bright as day 1. I think the braids are more of insurance and the metal base handles most of the work.

Proof of this will be seen in the upcoming T5 which we will be testing soon. It ditches the braid for what is labeled as a turbine and is not much bigger than a standard bulb. I'm skeptical of fans turbines whatever you want to call them, but one thing I can say is that the led options are only getting better. So Im going to test them with optimism. I'll be reporting my findings here in the coming weeks.

Sorry for the thesis but we also want to educate people and provide as many facts and personal experience as possible so you can make your own decision. Everything we offer is a product we use and has proven to be a reasonable alternative that we want to share.

Best Regards,
B




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