BLF GT w/ SFT40 !!

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Scallywag
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Tom E wrote:

I used the driver from the BLF GT90 conversion kit and the biggest 5050 MCPCB I could find:



Took the original XHP35-HI centering piece and opened up the hole:




Tested amps using the long leads I did for reducing voltage/amps:



Pushing the limits:




 


1. I think I have the same reamer but in blue
2. Why haven’t the SBT90.2 conversions I’ve seen used the reaming technique for a centering ring?
Tom E
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Dunno - maybe because it's a lot of material to ream to convert it. Actually all the stock black centering pieces had holes too big. The one I reamed for the SFT-40 was the best fit one by far. The good thing about the stock piece is it seems to center nicely aligned to the screws. The screws actually down hold anything down. I probably should have put a little dab of silicon glue on the threads to hold them in place.

Scallywag
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Tom E wrote:

Dunno – maybe because it’s a lot of material to ream to convert it. Actually all the stock black centering pieces had holes too big. The one I reamed for the SFT-40 was the best fit one by far. The good thing about the stock piece is it seems to center nicely aligned to the screws. The screws actually down hold anything down. I probably should have put a little dab of silicon glue on the threads to hold them in place.


Just there to prevent rotation?
Tom E
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Yea, stop rotation and center alignment.

ArtieT59
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Third day of rain today. The universe is making me wait to do these beam shots. I almost did it last night but the mist was too much.

[FLF] Five Light Friday https://budgetlightforum.com/node/78749

Check out some of my new lights (picture heavy) and quick first impressions of them here: https://budgetlightforum.com/node/77180

My Sft40 beamshots / comparison thread: https://budgetlightforum.com/node/78100

The BLF GT with SFT40 (2300lm, 2700m+ @ 30 seconds!)
https://budgetlightforum.com/node/79561

chops728
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I’m wondering if Tom would put one of these LEDs in an older Supbeam K40 or a TN31

Tom E
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Actually I got both - A K40, resistor tweaked w/dedomed XM-L2 and a TN31, think resistor tweaked, with a stock domed XM-L2. I think the TN31 is under-performing even for a dome XM-L2, but the K40 does ok but never does as well as a TN31. The thing is I'm thinking I'm not going to be able to get more amps out of those lights, and not sure what amps they put out right now. I'd have to carefully test the amps before even attempting an SFT-40, since they are sensitive, as I'm finding out. Burnt 2 of them out yesterday in a modded 3X221A.

 All depends on the amps. If I can get only 6 to 7 amps, then results would be so-so. If those lights can do 8-9 amps, now we are talk'n, but 10+ amps -- watch out! I'm hoping the way the modded driver works, the amps will be the same disregarding the LED Vf, but maybe that's not true - maybe I'll get more amps with a SFT-40 running at a lower Vf. Not sure how it works.

 All depends if the amps are the same, how a dedomed XM-L2 compares with a SFT-40.

chops728
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The 2 I want Modded are stock — I have a K40 modded by Vinh with dedomed XM-L2 (Fiat Lux pdtn led —it was his version of a perfect neutral tint after dedoming) It’s actually my favorite thrower —perfect beam — If I remember correctly (I’m old ) I tested it at 412 k throw — the thing about these two lights they’re fully regulated and heat is no issue

Let me know if you figure something out with the K40 — I’d be interest in a Tom E version — what tint is the SFT 40

Tom E
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Just tested my K40 at 341 kcd, on low qual batteries, modded in 2013. I'm thinking the resistor mod is light.  The SFT-40's are only 6500K for now.

You are right about the regulation - low amps back in the day, but love the mag ring to set the output level on these lights!

 

Again, same K40 on 30Q BT's: 349 kcd, little better, didn't expect much because of the driver's regulation.

chops728
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I don’t know exactly what vinh did — he definitely resistor modded it —- my measurement might be on the high side also

Tom E
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It's probably accurate - he experiments a lot with both resistor values/amps, plus focusing because he can invest the time, then turn around and get 10-20+ orders instantly, so can crank out a whole batch on only one effort of experimenting.

He does, or did, the same things we were doing, just on a larger scale.

chops728
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In the beginning I bought some of his lights before I started doing my own — I bought this K40 I guess 7-8 yrs ago with the intention of putting a special LED in it — My focusing skills leave a lot to be desired — sometimes I get lucky — most of the time on smaller lights —plus now days if a company is not making it , wait a while they will

JaredM
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I updated my TN31 to an SFT40 recently. Old days had shorted sense resistors and a good early days 3A tint XML2 from LED-DNA dedomed running 8A or so. I tried newer emitters over the years included XPL HIs and never matched the performance of the original mod. I was getting 343kcd with that setup.

Tried a 5000K SST40 domed and 7.0A got 261kcd, sliced it and only bumped it to 312kcd. Lovely tint and beam though when sliced.

Next I went to a CSLPM1 from hank and detuned the driver to 7.0A, made 565kcd. Good beam, but rectangular die caused asymmetric corona.

Now I have an SFT40 in from Simon, and have not verified the amps, but thinking its around 9A. I added another sense resistor to the stack that’s in there, but haven’t pulled it out completely to measure with a clamp meter. Perfect beam and 526kcd. Mode 5/6 hits 348kcd Just if it could be 5000K..

I will say that I kept popping tail-board mosfets with the latest setup. Actually went through my whole supply of 5 first stacking 2, then 3. Still blew ‘em. Must be some crazy in rush current or something. Now I have an old DPAK 70N02 fet tombstoned in there and it’s rocking out. Gotta say I like this light more than the WT90 to the point I would sell the Wildtrail first.

I keep attempting to take beamshots but photo quality is garbage IMO, I am too ocd to post crap pictures. I’ve been too cheeeep to buy the camera I’ve been wanting, but once I do. I’ll post everything I have.

Last thought I’ll add is that the round YinDing 5050 emitters say they’ve shipped. I’m going test those in this light too. Fingers crossed!

https://fundrazr.com/osturaband

No affiliation, just a fan.

Tom E
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Cool, thanks JaredM for all that info! Same here with the shipped YinDing's, Order with 3 reached the airline shipping status as of today.

https://www.aliexpress.com/item/1005003246180028.html?spm=a2g0s.12269583.0.0.4a5bf481hvxaID

We'll see how they look at 5000K.

 

tactical_grizzly
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With Anduril 2?! Incredible!

pennzy
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Won’t be getting any beam shots tonight. Fricken monsoon.

ArtieT59
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pennzy wrote:
Won't be getting any beam shots tonight. Fricken monsoon.

 

I know Pennzy... it sucks, I wanted to show off the insanity of this thing a little lol. Hopefully I'll be able to by this weekend. I Have a great state park to take photos at but it a half hour away, so not going to do the drive unless it a crisp "fog less" night. Hopefully soon LOL going to do the k75, wt90, ft03 sft40 and this BEAST.

[FLF] Five Light Friday https://budgetlightforum.com/node/78749

Check out some of my new lights (picture heavy) and quick first impressions of them here: https://budgetlightforum.com/node/77180

My Sft40 beamshots / comparison thread: https://budgetlightforum.com/node/78100

The BLF GT with SFT40 (2300lm, 2700m+ @ 30 seconds!)
https://budgetlightforum.com/node/79561

pennzy
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ArtieT59 wrote:

pennzy wrote:
Won’t be getting any beam shots tonight. Fricken monsoon.

 


I know Pennzy… it sucks, I wanted to show off the insanity of this thing a little lol. Hopefully I’ll be able to by this weekend. I Have a great state park to take photos at but it a half hour away, so not going to do the drive unless it a crisp “fog less” night. Hopefully soon LOL going to do the k75, wt90, ft03 sft40 and this BEAST.


Tonight’s the night. Rain again tomorrow.
ArtieT59
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I took some quick ones around the house last night  ! I'll try tonight too LOL will share the last nights ones now just for a "intro"

[FLF] Five Light Friday https://budgetlightforum.com/node/78749

Check out some of my new lights (picture heavy) and quick first impressions of them here: https://budgetlightforum.com/node/77180

My Sft40 beamshots / comparison thread: https://budgetlightforum.com/node/78100

The BLF GT with SFT40 (2300lm, 2700m+ @ 30 seconds!)
https://budgetlightforum.com/node/79561

ArtieT59
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Some beam shots 

https://imgur.com/a/f1x8qrS

 

the 5th picture down is almost laughable it's so awesome. 

[FLF] Five Light Friday https://budgetlightforum.com/node/78749

Check out some of my new lights (picture heavy) and quick first impressions of them here: https://budgetlightforum.com/node/77180

My Sft40 beamshots / comparison thread: https://budgetlightforum.com/node/78100

The BLF GT with SFT40 (2300lm, 2700m+ @ 30 seconds!)
https://budgetlightforum.com/node/79561

pennzy
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Nice, that ought to make the neighbor happy. Big Smile

Tom E
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It's a remarkably nice looking beam, compared to my other SFT-40 mods - the TK-35 (313 kcd, nice bump from SST-40 at 141 kcd), the BOSS1 (991 kcd, did about 700 kcd on a dedomed XPL), the FandyFire SP03 triple (552 kcd, up from 264 kcd on SST-40 6500K's).

ArtieT59
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pennzy wrote:
Nice, that ought to make the neighbor happy. :D

haha you remembered!

[FLF] Five Light Friday https://budgetlightforum.com/node/78749

Check out some of my new lights (picture heavy) and quick first impressions of them here: https://budgetlightforum.com/node/77180

My Sft40 beamshots / comparison thread: https://budgetlightforum.com/node/78100

The BLF GT with SFT40 (2300lm, 2700m+ @ 30 seconds!)
https://budgetlightforum.com/node/79561

ArtieT59
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Tom E wrote:

It's a remarkably nice looking beam, compared to my other SFT-40 mods - the TK-35 (313 kcd, nice bump from SST-40 at 141 kcd), the BOSS1 (991 kcd, did about 700 kcd on a dedomed XPL), the FandyFire SP03 triple (552 kcd, up from 264 kcd on SST-40 6500K's).

 

the beam looks AMAZING. It's a combo of pencil beam and large bright hotspot Spill. It's confusing in a great way. 

[FLF] Five Light Friday https://budgetlightforum.com/node/78749

Check out some of my new lights (picture heavy) and quick first impressions of them here: https://budgetlightforum.com/node/77180

My Sft40 beamshots / comparison thread: https://budgetlightforum.com/node/78100

The BLF GT with SFT40 (2300lm, 2700m+ @ 30 seconds!)
https://budgetlightforum.com/node/79561

Tom E
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JaredM wrote:
... Last thought I'll add is that the round YinDing 5050 emitters say they've shipped. I'm going test those in this light too. Fingers crossed!

Did yours come in yet? Mine are stuck somewhere since Oct 29th - no updates since. Last update was: "Arrival at the Destination"

JaredM
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Tom E wrote:

JaredM wrote:
… Last thought I’ll add is that the round YinDing 5050 emitters say they’ve shipped. I’m going test those in this light too. Fingers crossed!

Did yours come in yet? Mine are stuck somewhere since Oct 29th – no updates since. Last update was: “Arrival at the Destination”

Exactly the same for me. Bummed

https://fundrazr.com/osturaband

No affiliation, just a fan.

maxchaos92
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What the frick,that’s why I can’t find SFT40 for sale Evil Evil Cash Cash
Big likes for this light,the last photo it’s dunno…Stranger Things Shocked Never seen an hotspot inside the hotspot Crazy

ArtieT59
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maxchaos92 wrote:
What the frick,that's why I can't find SFT40 for sale Evil Evil Cash Cash Big likes for this light,the last photo it's dunno...Stranger Things Shocked Never seen an hotspot inside the hotspot }D

 

i think it's actually the corona and the hotspot, but because at 40m (the distance of the barn in the photo), it looks like the hotspot. The 5th photo in the linked photos, the corona (I think it is called that?) is actually

Lighting up the entire width of the street+ which is approximately 15m+ wide, at a distance of about 200m from the camera. I don't own ANYTHING else that lights like this thing, and I don't have anything to compare it to lol.

[FLF] Five Light Friday https://budgetlightforum.com/node/78749

Check out some of my new lights (picture heavy) and quick first impressions of them here: https://budgetlightforum.com/node/77180

My Sft40 beamshots / comparison thread: https://budgetlightforum.com/node/78100

The BLF GT with SFT40 (2300lm, 2700m+ @ 30 seconds!)
https://budgetlightforum.com/node/79561

no222
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should have chose the xhp99 or xhp160, jk. nice collection

ArtieT59
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I thought i added Real Beamshots here?! 

 

I will find them, or make more, and add them Even if just for my own recollection Smile

 

This light doesn't get used enough, i need a desert for it LOL.

[FLF] Five Light Friday https://budgetlightforum.com/node/78749

Check out some of my new lights (picture heavy) and quick first impressions of them here: https://budgetlightforum.com/node/77180

My Sft40 beamshots / comparison thread: https://budgetlightforum.com/node/78100

The BLF GT with SFT40 (2300lm, 2700m+ @ 30 seconds!)
https://budgetlightforum.com/node/79561

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