X6 Mod: Replacing a SST-90 with an XM-L

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ryansoh3
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X6 Mod: Replacing a SST-90 with an XM-L

Hey everyone, today I’ll be sharing a small mod I did.

I had a TrustFire X6 originally with a SST-90. It was severely underdriven at 6.5A. Sad

So I manned up and replaced the SST-90 with an XM-L.

The star of the show (pardon the pun) was a Noctigon MCPCB:

The LED was a XM-L U2 cool white tint from FastTech.

First, I tried to dedome it, but it wasn’t too neat and somehow I blew it inside the light.

It worked for a few seconds, and when I turned it on again… well it didn’t. :~

So I decided to leave the dedoming until later until I could safely get my hands on some gasoline.

Thankfully, I was able to use the screw down mounts with this star as well:

I used some Arctic MX-4 (overkill) between the star and the heatsink.

Soldiering the leads to the PCB was pretty difficult as the copper + heatsink absorbed the heat pretty quickly.

More pics:

Without the plastic insulator:

With:

Beam profile was not too shabby, but it did have a green ring around the corona:

I’ll add some beamshots tonight. Thanks for looking!

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MRsDNF
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Nice mod. Did you use the standard driver? You may be able to get rid off the ring by adjusting the height of the led in the reflector.

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

ryansoh3
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Yup, I used the standard driver. It’s not too bad, as it has a decent mode memory (actually works!) although the PWM frequency is distractingly low.

I’m pretty sure the LED is too low, so I need to add a copper piece under the PCB… I’m cutting a copper chunk out of an old CPU, I’ll let you know how that goes. Thanks!

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DARCANGEL
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Excellent mod,I know a member here used a reamer to open up the reflector's bottom(x7 I think)with good results.That would clean the beam up some and allow adjustment in the reflector.Great job and love to see the beamshots from this beast!

ImA4Wheelr
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Nice mod. Looking forward to watching it’s progression and results. If you don’t want to cut up the old cpu, you could pound out a pre-1984 US penny and then lap it flat. Don’t know if you have any of those.

ryansoh3
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Thanks for the kind words, I just finished up cutting the CPU (and cleaned up some copper dust out of my eye).

I’m not sure if I have those pre-1984 copper pennies, let a penny! Silly

Unfortunately Korea doesn’t use any copper coins anymore.

A 10 Won coin, equivalent to a penny, costs more to manufacture than it is worth. It’s now a copper color coin:

The middle is silver colored and is pretty darn light, almost weightless. Not quite sure of its actual composition though.

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ryansoh3
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Now the XM-L has died too. Epic fail. Sad

I guess I’ll be looking for a new driver. Party

I think there are current spikes when the driver if first turned on…

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panthervision23
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It’s well-placed. Good job. Wink

ryansoh3
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Thanks, the centering was tricky, as the reflector would shift to different places whenever I screwed the head in.

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bibihang
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ryansoh3 wrote:
Now the XM-L has died too. Epic fail. Sad

I guess I’ll be looking for a new driver. Party

I think there are current spikes when the driver if first turned on…


Replace it with XM-L2, I think they can handle the high current better.
ryansoh3
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Got it, I just ordered some XM-L2’s, so I’ll post my results in a week or two. Smile

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Slewflash
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Nice! Let us know if you dedome that bad boy.

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ryansoh3
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Slewflash wrote:
Nice! Let us know if you dedome that bad boy.

Will do.

Does anyone know how to get a safe amount of gasoline from a gas station?

I only need something like 200mL. Big Smile

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MRsDNF
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Do you know anyone with a petrol lawn mower or boat? Even two stroke fuel will do the same thing.

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

ryansoh3
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MRsDNF wrote:
Do you know anyone with a petrol lawn mower or boat? Even two stroke fuel will do the same thing.

No one around 20Km of here has lawns or boats unfortunately. Silly

Buildings after buildings… Big Smile

Thanks for the suggestion though!

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Ledsmoke
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What about someone with a moped/scooter/car? Ask someone to take a little in a jar or something for you. It´s no biggie for people who has to fill their tank every week. Thats what I´d do anyway. BTW: Diesel will also work.

~ Ledsmoke ~

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[quote=djozz]

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ryansoh3
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Ledsmoke wrote:

What about someone with a moped/scooter/car? Ask someone to take a little in a jar or something for you. It´s no biggie for people who has to fill their tank every week. Thats what I´d do anyway. BTW: Diesel will also work.

Thanks. Would they have to pump gasoline directly into the jar? Or siphon it out of their tanks?

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MRsDNF
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With a bike, if you can access the outlet tube on the on off tap you could drain it from there.

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

ryansoh3
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Interesting, I’ll try that out. I don’t think any of my friends own motorcycles though.

I’ll try asking a neighbor. Smile

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18sixfifty
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It should handle the current no problem as long as you have a very good thermal pathway and your emitter is correctly soldered onto the star. Make sure your pill is as flat as you can get it. There is a thread on here about lapping and that should help a lot. Also remember that less thermal compound the better, too much and it actually works as an insulator. You will get a much tighter hotspot if you drill out the hole in the reflector. I use a round file and do it by hand. You can drill out the base of the reflector completely if you want to. When you have it de-domed and the reflector drilled out and focused properly you are going to be flat out blown away by the results. Mine actually puts a large perfectly round hotspot on trees 500meters away. A full kilometer is what it can reach out to. 

 

Good luck and I can't wait to hear about your results. 

 

I’m a junky, I mod lights so I can sell lights so I can buy more light to mod so I can sell lights to buy more lights to mod.

ryansoh3
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Great mod, thanks for sharing.

I had some trouble insulating the + and the – soldering points, what are you using as an insulator?

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18sixfifty
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ryansoh3 wrote:
Great mod, thanks for sharing.

I had some trouble insulating the + and the – soldering points, what are you using as an insulator?

Thanks and you’re welcome.

It’s a round plastic piece that came with the one I bought, this is a Ultrafire T90 but I also did an X7 SST-50 a while back, same size reflector basically.

One of the tricks I use all the time is to just cut small pieces of electrical tape if I don’t have anything else available. I cut a small strip and then cut the corner off so it fits around it. Four of them usually works the best. They hold each other in place that way.

I’m a junky, I mod lights so I can sell lights so I can buy more light to mod so I can sell lights to buy more lights to mod.

ryansoh3
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Oh that’s right, mine did also come with a white plastic retaining ring but I seem to have lost it.

I’ll try the electrical tape method. Smile

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