Convoy S2/S2+ with very low modes feasible?

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strongest2004
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Convoy S2/S2+ with very low modes feasible?

I have been using my Convoy S2 with 3×7135 chips for more than a year now, mostly in its lowest setting. I got it from Simon together with a Convoy L4. Its gives decent amount of light on low with long runtimes on a 2600mAh Samsung Ii-Ion battery. I also love its shape and color (Grey). It’s on my person daily aside from my Quark Pro QPA.

I want to know if it’s feasible to have an S2/S2+ that can give the following output?

Moonlight: <= 1 lumen
Low: 5 lumens
Medium: 20-25 lumens
High: 100 lumens

Will reducing the number of 7135 chips to say 1 do it? Or are there other drivers that can do it easily and more efficiently?

(I have a Klarus ST11 and find it’s moonlight and low modes almost perfect but I really don’t like it’s cool white tint).

Low mode and long runtime lover…

pyro1son
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Indeed. Just one 7135 will give a bit over 100 lumens on high. If you wanted those modes exactly you could flash a modified firmware as well.

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power911
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learning to flash firmware would be better than removing chips imo

I mean I would prefer to have the lowest lows and the highest highs

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hank
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I’ve been happy using the mtnelectronics “moonlight driver” in a couple of Convoy hosts.

mattlward
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Or any of the FET + 1 7135 drivers. Learn to mod and flash basic code and you can go very low. I am a fan of the lowest lows and still having the highest highs.

Matt

EDC rotation:
Convoy S2+, 6*7135, XM-L2 3D, 10 degree TIR, PilotDog lighted tailcap.
Convoy S2+, H17F, XM-L2 4C, lighted tailcap
Zebralight SC52w-L2
Olight S1A
Olight S1R

Firelight2
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mattlward wrote:
Or any of the FET + 1 7135 drivers. Learn to mod and flash basic code and you can go very low. I am a fan of the lowest lows and still having the highest highs.

Matt

Since the original poster only wants 100 lumens at high, the easiest solution is to remove all but one of the 7135 chips. No need to learn to reprogram or spend money on a new driver.

A FET+1 driver would work, but the moonlight would be the same as simply removing all but one of the 7135 chips on the existing driver. Also the FET driver would then have to be reflashed with custom firmware to only give 100 lumens on high.

Removing 2 of the 7135 chips costs nothing and is very simple. Put the driver in a vise, hold the tip of a soldering iron to the central ground tab of the 7135 and lift off with tweezers.

mattlward
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Oops… missed the 100 lumen max. Not something normally asked for here.

EDC rotation:
Convoy S2+, 6*7135, XM-L2 3D, 10 degree TIR, PilotDog lighted tailcap.
Convoy S2+, H17F, XM-L2 4C, lighted tailcap
Zebralight SC52w-L2
Olight S1A
Olight S1R

1dash1
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strongest2004 wrote:
I have been using my Convoy S2 with 3×7135 chips for more than a year now, mostly in its lowest setting. . . .

Strongest2004:

I have an S2+ running at 8×7135 (2800mA). The lowest mode puts out around 20-30 lumens. I wanted something lower, so I just purchased today another S2+, this one running at 3×7135 (1050mA).

Can you tell me about how many lumens your flashlight puts out to give me an idea of what to expect? EDIT: I mean output of the lowest setting.

(I may end up what you’re doing here and modding the flashlight even lower.)

Rule 1-1 as it applies to life, take it as it comes.

pyro1son
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Your probably looking around the 400 lumen mark give or take

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hank
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Quote:
a fan of the lowest lows and still having the highest highs.

And welcome to Bipolar Light Forum (grin)

1dash1
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pyro1son wrote:
Your probably looking around the 400 lumen mark give or take

Sorry, I didn’t make myself clear. :Sp

About how many lumens is the lowest output setting on the S2 running 3×7135?
.
.
(Edited my earlier post to clarify the question.)

Rule 1-1 as it applies to life, take it as it comes.

strongest2004
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@pyro1son, power911, hank, Firelight2 and mattlward
Thanks guys for all your replies. I have several options to look at.

@1dash1
I don’t have any equipment to measure actual lumens. Offhand I’d say about 15-20 lumens. But I can do a comparison with known settings of my other flashlights. Will get back to you on that.

Low mode and long runtime lover…

1dash1
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Thank you for checking. Beer

Rule 1-1 as it applies to life, take it as it comes.

akhyar
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Having own the Convoy S2+ and also Zebralight SC600 and Olight S1, where the 2 lights have moonlight modes in sub-lumen (0.1 and 0.5 lumens respectively, from manufacturers’ specs), I do find thr S2+ lowest mode is still high, especially if you don’t want to disturb your night vision in the bedroom

jacktheclipper
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Try diffusing the output with some DC-fix . While it won't lower the lumens significantly , the softer beam might suit your needs better .

Buy some from Boaz .

1dash1
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Firelight2 wrote:
. . A FET+1 driver would work, but the moonlight would be the same as simply removing all but one of the 7135 chips on the existing driver. . .

Firelight2:

I understand that cutting the power by 2/3 will result in a high of 100 to 150 lumens. However, I don’t understand how doing so will achieve a low in the moonlight range.

Assuming, the low mode with 3×7135 drives the light to 15-20 lumens, then wouldn’t 1×7135 drive the low mode to 5-7 lumens? (The luminous flux vs. current chart appears to be almost linear at these levels.) To me, “moonlight” would be somewhere closer to 1 lumen.

(Side note: It’s funny how discussions of moonlight modes always seem to devolve around lumens, when really we should be talking about lux!)
.
.
.
And if, indeed, we need to do something with the UI or firmware to achieve a true moonlight mode, then wouldn’t it be easier for the OP to switch out his (unpleasant) cool white LED on his Klarus ST11 that already has the desired modes?

Rule 1-1 as it applies to life, take it as it comes.

1dash1
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jacktheclipper wrote:

Try diffusing the output with some DC-fix . While it won’t lower the lumens significantly , the softer beam might suit your needs better .

Buy some from Boaz .

That’s a good idea! A 2-sided application should cut the output by 6% and the highly diffused beam should be much mellower. Smile

Rule 1-1 as it applies to life, take it as it comes.

strongest2004
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@jacktheclipper
Will do that using something similar to a DC-Fix. Thanks.

@1dash1
Unfortunately, I don’t have the tools and the means (more on the means Oops ) to change LEDs/modify my fls. And from where I am based (Philippines) I don’t know anyone who can do it for me. So my only recourse is to buy what is available…

BTW, I also asked the same Q in the Blue Convoy S2+ thread ang got some good inputs also.

Low mode and long runtime lover…

strongest2004
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Got a reply from Simon.
He can do a 1×7135, 4C, 5%-30%-100%! On top of that, I get 15% discount.

Will be placing my order in a while. Thanks everyone for your inputs.

@Simon
Thanks for the excellent service!

Low mode and long runtime lover…

1dash1
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Hey! That’s great!

Wish I had known that information before I placed my order.

Still… I’m hoping for good results using the DC-Fix. I’m not aiming for moonlight low, just a very mellow low. H)

Rule 1-1 as it applies to life, take it as it comes.

strongest2004
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1dash1 Thanks. I hope that 1x7135 5% low will give about 5-7 lumens. BTW I compared the output of my S2 with my Quark QPA and the low of my S2 is roughly 50% brighter “visually” than the low (@25lumens) of my Quark.

Just thinking if 1 pc is enough for me (as an EDC) or should I get 1 more for home or GHB use.

EDIT.
I just tested the S2 with my SWM D40A and both lights roughly have the same brightness on low. Per specs, the 40A gives out 30 lumens on low mode.

Low mode and long runtime lover…

Halo...
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What is you budget? RMM / mtnelectronics.com does custom builds as well, besides selling drivers. You could have him build you a light with exactly the modes you’d like.
Moonlight: <= 1 lumen
Low: 5 lumens
Medium: 20-25 lumens
High: 100 lumens

Just checked, he has S2, S2+, S2+ blue, S2+ red hosts. Select the build service. Add a driver (Nanjg AK-47A 7135*3) specify remove 2 7135 chips. I’d recommend an “off-time” firmware. Then add an led to your chart as well, maybe an XP-G2 on aluminum mcpcb. Or you could go for a nice nichia and ask him to stick it on aluminum to save a couple dollars (with only 1×7135 you don’t really need copper). RMM has a sales thread here on BLF if you have any questions for him.

Going full out (S2+ blue, nichia 90+cri, customized Nanjg AK-47A driver) it’s about $27 for the light. Less if you go for a plain S2/S2+ and XP-G2. Looks like shipping to Philippines is $15.

Cousin Elmer
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Everything you gain by reducing the driver to 1×7135, you loose by choosing a driver with a minimum mode as high as 5%. The guppydrv from RMM has two modes lower than 5% — 2% and ML.

I just took 3 flashlights for a short walk. A Zebralight SC600 spec’d at 3.8 lumens and two Convoy S2+ lights with 8×7135 and the guppydrv. One Convoy has a triple XP-G2 and the other has an XP-L. The XP-L with the small S2+ reflector has a much larger hotspot than the SC600 and the triple XP-G2 is extremely floody.

On the guppydrv ML mode the single emitter Convoy is less intense than the 3.8 lumen SC600, and the triple emitter Convoy is much less intense than the 3.8 lumen SC600 — even with 8×7135.

RMM is very accessible and could make further recommendations.

chuckhov
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I think that the OP is primarily looking for long run-time, but what you say about RMM is certainly correct.

If anyone can give you what you want, it’s Richard, (RMM) but you gotta wait – probably for about a month…. To shipment time.

Isn’t that the way that the line forms for all things that are exceptional? – Did you ever see a line for things that suck?

Look for the line… and buy there, if you want the best…

Get in Line! – You Will get what you want from Richard/RMM!

-Chuck

strongest2004
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@Halo, gypofles5000 and chucknov
Wow, thank you for the very detailed suggestions. Looks like I have to think about RMM’s offerings as an option before I pull the trigger on this light. I don’t mind falling in line and the long wait. I also believe you get what you pay for.

What makes this hard for me to decide is, like most BLF members, I don’t really have a specific need for a new light. I have multiple lights that cover my needs (or wants) from Moonlight to Turbo. But the Blue Convoy S2+ looks so good, I gotta have 1, or maybe 2 … Oops

Low mode and long runtime lover…

Gunga
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Why don’t you just buy a programmable driver from Dr Jones aand swap it out.

Halo...
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Do you have any high cri lights?

If not, since you don’t have a specific need I’d say get a nichia 90+ cri (presuming it fits your budget). That way, you get a light that is more different then your current lights. Easier to justify the light to yourself! Big Smile

strongest2004
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@Gunga
It’s not an option for me since my skills are not up to par. Thanks for your suggestion though.

@Halo.
Thanks again for the input. I have three- an L10, a modded 501b and C8, both overdriven and made by 18sixfifty. The 501b is single LED, the C8 is a triple LED. Love them all. Sadly, the C8 is not working. Don’t know how to troubleshoot it which requires dismantling the head Sad

Yup, I am seriously considering a nichia version for my next light.

Low mode and long runtime lover…

1dash1
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strongest2004 wrote:
1dash1 Thanks. I hope that 1x7135 5% low will give about 5-7 lumens. BTW I compared the output of my S2 with my Quark QPA and the low of my S2 is roughly 50% brighter “visually” than the low (@25lumens) of my Quark.

Just thinking if 1 pc is enough for me (as an EDC) or should I get 1 more for home or GHB use.

EDIT.
I just tested the S2 with my SWM D40A and both lights roughly have the same brightness on low. Per specs, the 40A gives out 30 lumens on low mode.

30 lumens would be too high for me.

And probably too high for you, too. 30 lumens on the 3×7135 setup translates to about 10 lumens on low for the 1×7135 setup.

Rule 1-1 as it applies to life, take it as it comes.

1dash1
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Halo… wrote:
What is you budget? RMM / mtnelectronics.com does custom builds as well, besides selling drivers. You could have him build you a light with exactly the modes you’d like.
Moonlight: <= 1 lumen
Low: 5 lumens
Medium: 20-25 lumens
High: 100 lumens

Just checked, he has S2, S2+, S2+ blue, S2+ red hosts. Select the build service. Add a driver (Nanjg AK-47A 7135*3) specify remove 2 7135 chips. I’d recommend an “off-time” firmware. Then add an led to your chart as well, maybe an XP-G2 on aluminum mcpcb. Or you could go for a nice nichia and ask him to stick it on aluminum to save a couple dollars (with only 1×7135 you don’t really need copper). RMM has a sales thread here on BLF if you have any questions for him.

Going full out (S2+ blue, nichia 90+cri, customized Nanjg AK-47A driver) it’s about $27 for the light. Less if you go for a plain S2/S2+ and XP-G2. Looks like shipping to Philippines is $15.

Thanks for the tip!

Wish I had known that Richard did this before ordering my second S2+, but usually isn’t that the case in life? You don’t know what you don’t know until after you learn about it!

Not a complete loss though. I really love my Blue S2+ 4C. Best tint in my collection. I wanted to pick up another one, anyway. And there’s always the option of removing one or two of the 7135 chips, if I’m really not satisfied with the 3×7135 setup.

Rule 1-1 as it applies to life, take it as it comes.

strongest2004
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Agree 1dash1.
I still love my S2 but for times that I want to bring only 1 multi-role EDC, I hope the new S2+ will fill that role.

Low mode and long runtime lover…

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