I got a few more orders in yesterday. The first one is from Krash610. He sent me 2 xhp35 lights.
One of these was just going to get a driver but he decided to try some E4 bin XHP35 HD LED’s, so I have to wait for those to show up.
The other I just got finished with, he wanted the 80cri 4500k LED’s with the TA driver.
Interestingly this light is doing much better then the last one I built with these LED’s and I have no idea why. I even pulled out my old meter to compare but it said the same thing. It is possible the last light I did the lumen test with low batteries.
This light is doing just under 7000 lumens which is very impressive indeed for an 80cri LED. Once again the tint is fantastic. I so love 4500k.
I also got an MT07 in for modding, I was not aware that it was wired in 4S so it was a lot more work then I figured it would be to mod but just waiting on the LED now to finish it up.
I read here 22k Lumen and 80 CRI, I am looking on all the websites I bought parts and LEDs and find only M4 bins in CRI80, but those should not get that many output
I think the last one was mine measured at 5700 lumens. Can you check it again with full batteries? I would be willing to pay for another set of emitters if it is really that much lower.
Also tracking says my three MT03 is out for delivery today to your address.
Well I just checked, rechecked and swapped batteries, battery tubes was even about to switch the drivers when I think I might of figured out what is going on.
The tints on them are very close, seen separately it is hard to tell a difference unless looking for it. But when held side by side (I just used 1 set of cells at first to keep things consistent) you can see that SVK’s light is slightly warmer / rosier. At first I wondered if they somehow sent me the wrong LED’s as it clearly says on the label these are C4 80cri 4500k LED’s.
Then I remembered that SVK’s light used a mixed tint 4000k/4500k setup, which perfectly explains the difference in tint I was seeing.
The C2 bin 4000k LED’s must just be much lower output then the 4500k then the 1 bin lower would suggest. Everything else between the lights is exactly the same. With fresh cells the 4500k is doing just under 7000 lumens every time and the 4000k/4500k is doing just under 6000 lumens every time I measure them on both spheres.
Admittedly that is a pretty extreme difference in output but I even hooked them up to my bench power supply and verified that they are being driven to the max, I could not get more then ~100 extra lumens on either light using the power supply vs the cells like normal.
So it is up to you SVK, I can swap in some 4500k emitters, or you can stick with what you have. If you like rosy tints, that is exactly what yours has now, a nice rosy high cri tint. If you would prefer more output I can swap them, just let me know.
I got a package in a little bit ago, that is most likely your MT03’s.
hoping we can find out the lumen gain on an MT03 after adding the TA driver only. I thought I had read somewhere to was like 3000 lumens on the MT09R? Anybody recall?
Yep, The last MT03 I modded did around there, if you dig back through the thread it should be posted at some point. They have all been between 21k-23k at this point I am pretty sure.
I think the NW should be doing more than that. My 4000k stock without DC-Fix was getting just 13k lumens which is consistent with your measurements for my light but my stock 5000k measures 32.3% more, which equates to 17+k lumens. Both my friend and I can tell that the 5000k is noticeably brighter than the 4000k. Shouldn’t your driver bump the stock NW emitters to over 20k lumens? Or did I just get lucky and got cream of the crop emitters for the NW.
The NW have been inconsistent for me thus far. Some of them have been pushing 18-19k lumens and some of then only ~16k. Seeing as I have no idea what the LED’s are or if they are even the same LED’s I just picked a number in the middle.
The more I see of these lights, the more I am convinced there were at least 2 separate batches made. I have seen at least 3 driver revisions in these lights and there are 2 very slightly different machining batches. You can not swap the battery tubes between them apparently as it will not quite make contact (the earlier test with your XHP35 lights was like that, 1 tube worked on both, the other would only work on the light it came from).
So with this in mind it also makes sense that the LED’s could be different as well, which would explain the different numbers I have been getting from light to light with stock LED’s.
That is the only explanation I have been able to come up with anyways. It is a lot of extra work to swap the driver with the stock LED’s and then remove it again so I only did that a few times.
This is the light where early versions used 2S2P and later versions used 4S. I think there was a time you could choose which version you wanted. My memory is fuzzy on it. Maybe Terry can give the whole story.
Both MT03 and MT07 are Haikelite’s first two lights offered for the groupbuy (organised by Haikelite). Both were available in 2S2P and 4S. Most of the driver issues occurred with the 4S variant, so Haikelite continued with just the 2S2P variant.
The more recent offering, the MT07S went back to 4S. Without announcement, the original MT07 went back to 4S as well. It was just a few days ago I was talking to a member who measured the voltage of his new MT07 and confirmed it was indeed 4S to my surprise. On Haikelite’s site it also says 4S, but I have no idea when the switch was made.
hIKARInoob is right about the first GB done by Haike, and the 4S driver killer and those lights even came with what I thought was a green shoe lace, turned out it was supposed to be the braided lanyard ha ha. what was really amazing was how calm 90% of the BLF members were, it was a massive disaster GB that’s for sure.
