SOLD - Torchlite SVD7 w/ MTG2 - Update (lux and current measurements)

Buy / Sell Want to Sell
1

edit: SOLD

I’m doing this a little different, I hope that doesn’t bother anyone or break any forum rules…

If you’re interested in owning this light, please make an offer by Private Message

Buyer will pay the cost of shipping in addition to their offer.

FYI, my cost for components = $90 (host, driver, emitter, sinkpad, screws, insulator, driver spring, epoxy/alumina, so that’s the ‘reserve’ price…

Previous build thread - Torchlite SVD7, De-domed MT-G2, 9A driver

CHANGES:
>removed dielectric layer from sinkpad mtg2 pcb (to prevent screws from shorting to contacts).
>filed bottom edge of sinkpad until the recess was gone, then lapped to 2500 grit
>changed leads (from where they exit the potting) to 20ga(+) and 24ga(-) teflon insulated wire
>soldered leads directly to emitter
>changed screws to steel, 4x40, ultra low profile head

Here are some pictures…

First, two scratches in the anodizing (this is how I received the host) :_( . Other than these, the finish and machining are very good.

updated pill photos

The insulator had to be cut to fit, so the hole isn’t perfectly symmetrical - but the emitter is very well centered.

driver potting….note I change from silicon to teflon wires - simply because they are stiffer and easier to solder to emitter

*Potted top board of driver (devcon 2 ton epoxy and alumina)

*potted bottom board of driver

*applied release agent to inside of pill and potted entire driver inside it

*soldered driver to pill

size comparison with Crelant 7g5v2.
The neoprene holster is included - the Crelant is NOT :slight_smile:

Latest beamshots (a fair bit dimmer than what my eyes see…I still need to figure out my camera)

High (strike a pose, Ozzy)

Medium

Low

High

Update - measurements

cells - 2xMNKE IMR 26650, 4.21V
Current - High, Medium, Low

I have not measured at the emitter with this driver. I would guess driver efficiency at 80. I doubt it is any higher, but I wouldn’t be surprised if it is lower. 80 would = 38 watts to emitter…so it is getting 5 to 6 amps at turn on.

As the light heats up, and the emitter Vf goes down, current settles in at ~5.8A on high.

Lux - the range on the meter is set to x100 and the lens is 1 meter from the sensor (+/- 2cm).

These measurements are when the light is first turned on (the hotspot looks off center on the sensor, but it is an illusion due to camera angle)

High = 37300 lux

Medium = 16900 lux

Low = 5300 lux

I ran the light for 3 minutes on high, with it bezel down on a table (nothing touching the light body) to check tail current and see if the temperature protection would kick in (it did not).

At that point, wrapping your hand around where the pill is and holding it becomes uncomfortable after several seconds.

Immediately after the 3 minute run, I replaced the tailcap and took these lux measurements.

High = 31300 lux

Medium = 14200 lux

Low = 4300 lux

Starting from room temperature, and holding the light by the battery tube, I can run it for 5 minutes before I get concerned - the battery tube is warm but not at all uncomfortable to hold. The heatsink and head are pretty hot.

I run a modded Trustfire D1 w/ xml at 4.3A until it gets much hotter…but I don’t feel like pushing my luck any further w/ this expensive emitter lol

Imagine what this light would do w/ a copper pcb J)

2

What voltage and amperage are you getting to the LED? I blew a MTG2 on direct drive with a pair of 18350’s. If yours is stable I’m in for a bid.

3

Just wanna say "nice pose Ozzy" :) Would love this light, but it's out of my price range.

-Garry

4

It is stable :slight_smile:

I updated the first post w/ answers/photos.

One thing I forgot to mention in the description - I took this sinkpad pcb, glued a dremel rubber sanding drum to it and spun it inside the pill w/ 1200 grit lapping compound between them. Then I polished it out w/ sandpaper - 1500/2000/2500, and also scrubbed out the pill w/ 1500 sandpaper.

Don’t try driving an MTG2 this hard w/o doing this AND screwing it down. Ask me how I know :Sp

yeah, I didn’t notice him until I came back inside and was ready to post the photos lol

thanks. it is a beast. I can’t really afford it either, but I will be keeping one anyway :party:

5

Congrats on the sale of this light. I came over to bump this thread in the interest of this light getting a good home. The purchaser is getting a great light. I followed your build of it and have a sense of how much time and effort you put into it.

6

Thanks!

I couldn’t bring myself to sell it if I didn’t have two others in the pipeline :slight_smile:

I’m excited for someone else to get to see the output. I bet it will stomp a SRK…but I dont’ have one.

The only disappointing things is the lack of a coated lens, and the scratches (that came on each of them).

I’ll probably file/polish the leading edge of head/tail on the one I keep….and get a lens….

7

Happy to see this light get a good home.

If they made red mtg2’s I would’ve been all over it.

8

if it had a wider reflector I’d stick a pt-54 in there. I’ve got 2 on hand, maybe I should see what kind of throw it gets - although, it’d be kind of heavy mounted to a weapon…

9

That’s a solid light! For me, all beam shots from high, medium and low settings did very well.

10

the low is sooo useful. there’s a lot of light coming out (like 600 lumen), but it is spread out enough not to be too bright for close up work, even though it clearly reach the back fence - and runtime is probably 5 hours…

11

Excellent Build! I have to pass for budget reasons, but you have given me so many ideas for future mods. I didn’t know there were MT-G2 SinkPads. I was ready to make my own!

12

and you can get them for free if you fill out their survey :wink:

but…they’re aluminum, and they are THICK…

13

Are you sure the driver is not pulling 12A (since it's from 2 cells) and outputs 9A, maybe efficiency even lower than 75%? I don't know just asking.

14

Oh my gosh, the SRK really has no chance against the light you built for the following reasons:

  • Heat Sinking - I modded my SRK to get the heat from the LED’s better and the light gets uncomfortable to hold very fast and unbearable to hold shortly after that. I feel like I’m cooking LED’s when I try extended use with my SRK
  • Color Rendering - I modded my SRK to render color better, but it is still not nearly as good as the MG-T2 emitter you used.
  • Modes - The SRK really needs a good low mode.
  • Beam Profile - Sure, the SRK puts out an impressive “wall” of light. But good luck trying to spot something beyond that wall. I haven’t seen your light in person, but I have the same host and have looked at your beam shots. I’m pretty sure your light gradually intensifies to the center of the beam and that you can see many times the distance out beyond the SRK’s territory.
  • Looks. The Torchlite SVD7 is a very nice looking light in my opinion.

To me, your light is many, many times more useful than a SRK. If I had to chose between having 3 SRK’s and your one light, the one would win.

15

thanks.

in the seller’s thread for the SVD7, richie did some beamshots of his vs. SRK and the SRK won in throw and overall output, but it was pretty close.

That was using the 3-18V 5A driver, and this driver is pushing another 1 to 2 amps to the emitter :party:

I’m quite sure this light has more mass and surface area….of course that means it is also not as compact and lightweight… we can’t have it all I guess…

16

Good info. Maybe I don’t have my SRK setup right. I think I’m pulling shy of 6 amps, but that is enough for me with the heat issue. It could be that my SRK throws better than I realize, but I just can’t see it due to all the near-field light.

17

could be

I saw reviews saying ~22k lux, which is what this SVD7 was doing (after it warmed up) before I lapped the pdb and screwed it down tight (to improve heatsinking and focus).

18

In your light build you said “changed leads (from where they exit the potting) to 20ga(+) and 24ga(-) teflon insulated wire” Why did you change the wires? I’m starting to get a little braver in building lights. I’ve not yet run over 3 amps yet so these extreme heat issues haven’t hit me yet. I’m still at the P60 dropin pill level, still trying to learn all I can. Potting and epoxy still scares the #$%^ out of me. Looking forward to the triple MTG2 builds down the road from someone out there.

19

Just got the light in the mail today. It makes a great mule head too. Very bright, well spaced 3 modes and I’ve blinded myself already twice.

20

wow, that was fast shipping (sent saturday before noon, maryland to texas).

It does make a great mule, and tailstands even better w/o that heavy head attached.

I bet you’re itching for nightfall!

Feel free to expound your opinion, good and bad….and enjoy :slight_smile: