Experiment MOD: Small Sun ZY-T13 with MT-G2 (now with beamshots and various measurements)

I say Push It, Push It Real Good. Sorry, for some reason that stupid song came to mind. I don’t know the answer, but I hope a lot. It’s just such a convenient mod. Well maybe not. I imagine that reflector is hard to clear. Do you have a build thread for copper xml2 mod?

Normally I would push it real good, but this is a driver circuit that I would prefer not to destroy due to not having any good replacement that seems to be on level with the stock driver (in terms of UI). Or maybe someone know of some good options in case I should mess it up if aiming for 4 amps?

Here is a little post about the XM-L2 change. Nothing special. It does not show the plastic insulator I cut and used over the wires though.
At the moment, Im just using kapton tape under the reflector where there is a risk that the wires could touch. Its thinner than the plastic insulator stuff so I often use that instead.

Are those amps emitter or tail cap?

I have ~2.3 amps tail cap on mine to an XP-G2

Nice mod!
Pushing 3A into an MT-G2 will get you close to 1500 lumens OTF, I’d guess. Based on my results with the ZY-T08. That’s a nice mod, and someone (garrybunk I think) was just asking about this host/emitter combo.

Not a huge difference between emitter and tail though when using the MT-G2.

Thanks for the info! :slight_smile:
If you have 2,3 on the tail, then you have modded it for roughly 4,6A to the emitter when using an XP-G2. If so, that is the furthest I have read someone have pushed the stock driver circuit (you have modded the stock driver circuit right?), and way higher than Im at now.
If so, I have a feeling it should be able to do that current to an MT-G2 as well then… 0:)

Hi,

I was wondering - will the stock ZY-T13 driver output 6V (for the MT-G2) then?

yupp!

Very nice, thanks for sharing!

The MT-G2 looks like a nice fresh egg yolk. :slight_smile:

Thanks R86. I totally understand. That driver would be hard to replace. Best wishes on your endeavor.

I have not measured led current, so I am guessing 4 amps max after losses. Or less.

Nice mod RaceR86. Is the reflector in this light identical to the HD2010. From memory the internal reflector measurement is 53mm. The reflector in the Small Sun ZY-T621 is identical to the HD2010 and one day I was planning om modding it to MTG-2. Just got to much other stuff on.

Very cool! I want to do this (some day)! Will that trimpot work FTP adjust to 4.0A output?

-Garry

Looking at this post in the other thread:

he just shorted the outer resistor and got 4.8 amps.

So, how would this work if you just took a stock light, replaced the emitter with an MT-G2, and shorted that one resistor? Would that be ok?

I’m pretty sure that the HD2010 and ZY-T08/T13 reflectors are different. I’m going off memory. I have a particularly painful one of grinding through into the finished side when trying to clear wires in the HD2010. The beam profile is a little different too. The HD2010 has a bigger hotspot and more friendly to use in midrange.

Im not sure how far the trimpot will let it go in terms of output. Ill get back to you if I find out… Could always use resistors though. I normally use resistors.

Based on what I have seen with this driver and an XM-L it seems like LED current are pretty equal to tail cap current x 2.
But if you are seeing 2,3A at the tail with and XP-G2, then that seems promising in terms of what the driver can handle.
Ill take beamshots with the setup I have right now (MT-G2 at 3,29A), then I might be tempted crank up the lumens! J)

Of all the cheap drivers I have looked at, the T13 driver seams built to stand the most current. I need to try driving one with a dedomed XML2……

Crank it up man! Gotta at least push 4A through it! And definitely report back on heat management. (I just noticed "FTP" in my last post - stupid iPhone autocorrections even though the word was typed correctly!)

-Garry

Bumping my own post (sorry), but doesn anyone know the answer to the above?

Ohoya, I can not answer your question direcly, maybe others will, but you may find my various measurements with this driver interesting.
Lots of info have been added to the OP! Various beamshots too! :slight_smile:

Hi,

Ok, thanks, I understand. FYI, the reason for my question is that I’m interested in trying this light and the MT-G2 but with increasing the current, but don’t have a trimpot, so was trying to take the “easy way out”.