Ok, finally got caught up on the MT09R mods for the day and had some time to mess with some other things. I think I figured out a way to make lumen spheres to sell much easier and better. I already made one today that is within 1% of my sphere. I am thinking about selling them if there is interest.
The real fun though are the GT’s. I have now modded both of my XHP70.2 GT’s with the new TA drivers, installed the M4 80cri 4000k XHP70.2’s in both of them, 1 with dome on and the other with dome off.
I also got some readings. Keep in mind that I just sent my good meter to another member on here last week as part of a trade and I am needing to order a replacement. So I am just using my cheapo HS1010A that I know reads lower then my Dr lumens meter the old readings were from.
So these readings are with the lower reading meter, only taking readings at 7m, and the 4mm tall centering ring (higher numbers can be had with the shorter ones but you get a dark spot in the beam as you go shorter) I am now getting:
Dome on XHP70.2 M4 80cri 4000k - 520kcd for a whopping 1450m of throw!
Sliced dome XHP70.2 M4 80cri 4000k - 725Kcd for an even more impressive 1700m of throw!
Edit: For comparison I took a measurement with the stock GT to see what it would do on this meter. I know with the Dr meter this GT got over 1mcd on a low humidity day.
Stock XHP35 HI 4000k GT on this cheap meter - ~850Kcd - ~1850m of throw
So this means that the XHP70.2 with dedome is somehow reaching ~80-85% of the xhp35 hi throw levels!
I am pretty sure the dr lumen meter was reading about 10-20% higher then this one but did not compare them before sending it off.
I also held a small reflector over the LED to get some lumen readings in my sphere and it read well over 9k lumens! It was so powerful it started to melt my diffusing layer, which is why I set about making a replacement sphere to have on hand in case this one ever was damaged enough to change the readings.
Now far as the beam goes, the dome on version has a very nice beam, very close to the stock tint with a tad more yellow that is inherent with the xhp70.2.
The dedomed XHP70.2 does tint shift quite a bit warmer, between 3500-4000k if I had to guess. It is not bad but not for everyone.
I also stress tested the driver and light setup by cooking it with thermal control turned off and 8 30q cells until the LVP kicked in. It got up over 190f degrees but everything is still working great and these numbers are after that abuse. So I think I can say that the driver is stable at this point!
I am busy with the MT09R modding right now but if there is enough interest to sell ~20-25 drivers I can order the components and build a batch.