Sofirn C01S SST-20 4.000K 95CRI / Low-High version available again!

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MoreLumens
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Unheard wrote:
There was a question which inexpensive honeycomb TIRs would fit:


Left: Original optics, right: ‘AE’ optics

https://aliexpress.com/item/32989679045.html

$1.18 incl. s&h, 5 pcs.

It is not the quality of those TIRs someone found in Bulgaria (artifacts at the white wall), but you’ll see no artifacts in real situations. Much, much better than the original optics with its rings. Can recommend them.

Nice find and good pics! (Cleaned your link a bit so it won’t mess up language settings.)
What degree optic that is? 60 or 90? My C01R has waited something like this.

Unheard
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45°

Smile, you cannot kill them all.

Agro
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Maybe these Yajiamei lenses would work as well?

Cemoi
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@Unheard: how did you manage to open the head and hence swap the optics?

It seemed to me it was glued and therefore impossible to open.

Ultrafire C3 2AA / Akoray K-106 / Nitecore LR10 / Manker E03H / Fenix HL10 / Zebralight H501R + H51W + H53c / DQG Hobi / Astrolux M01 / CooYoo Quantum Ti (lost) / BlackWater Kite Al / Emisar D4v2 (Nichia E21A) / Sofirn C01S / Skilhunt E3A

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Cemoi wrote:

@Unheard: how did you manage to open the head and hence swap the optics?


It seemed to me it was glued and therefore impossible to open.


There’s red threadlock. Brute force and maybe heat helps.

Smile, you cannot kill them all.

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Unheard wrote:
Cemoi wrote:

@Unheard: how did you manage to open the head and hence swap the optics?


It seemed to me it was glued and therefore impossible to open.


There’s red threadlock. Brute force and maybe heat helps.

Disappointing. Sad
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Agro wrote:
Disappointing. Sad

It’s very little threadlock. Sofirn just made sure the pill won’t stuck in the battery tube when loosen the head. This problem has been reported a few times.

Smile, you cannot kill them all.

Cemoi
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The pill doesn't seem to be screwed in the head, but force fit (judging from the two notches).

So you need to pull it out with a tiny screwdriver tip, correct?

Pictures of the process would be helpful wink

Ultrafire C3 2AA / Akoray K-106 / Nitecore LR10 / Manker E03H / Fenix HL10 / Zebralight H501R + H51W + H53c / DQG Hobi / Astrolux M01 / CooYoo Quantum Ti (lost) / BlackWater Kite Al / Emisar D4v2 (Nichia E21A) / Sofirn C01S / Skilhunt E3A

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Cemoi wrote:

The pill doesn’t seem to be screwed in the head, but force fit (judging from the two notches).


So you need to pull it out with a tiny screwdriver tip, correct?


Pictures of the process would be helpful wink


What you see in the picture is the shell which holds and protects the optic. You have to grab the head at the threads and then unscrew the bezel.
Unheard
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Cemoi wrote:

The pill doesn’t seem to be screwed in the head, but force fit (judging from the two notches).


So you need to pull it out with a tiny screwdriver tip, correct?


No, it is screwed.

Don’t touch the PCB. The threaded part is actually part of the pill.

Smile, you cannot kill them all.

Cemoi
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Thanks SammyHP and Unheard, it's clearer to me now. So the way to go is to:

  1. Remove the O-ring,
  2. Gently heat with a hairdryer (hot enough?) or a cigarette lighter (not too close),
  3. Grab the thread with plyers, inserting e.g. a rubber sheet to protect them,
  4. Same for the bezel.

Correct?

Ultrafire C3 2AA / Akoray K-106 / Nitecore LR10 / Manker E03H / Fenix HL10 / Zebralight H501R + H51W + H53c / DQG Hobi / Astrolux M01 / CooYoo Quantum Ti (lost) / BlackWater Kite Al / Emisar D4v2 (Nichia E21A) / Sofirn C01S / Skilhunt E3A

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Yes. Before applying heat, see if you get it loose without. A lighter is very hot, not recommended.

Smile, you cannot kill them all.

Sari33
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Unheard wrote:
There was a question which inexpensive honeycomb TIRs would fit:


Left: Original optics, right: ‘AE’ optics

https://de.aliexpress.com/item/32989679045.html?spm=a2g0s.9042311.0.0.41...

$1.18 incl. s&h, 5 pcs.

It is not the quality of those TIRs someone found in Bulgaria (artifacts at the white wall), but you’ll see no artifacts in real situations. Much, much better than the original optics with its rings. Can recommend them.


We talked about these 45° Lens,glad you like them.
The Beam is larger but also dimmed than stock lens. For outdoor I’ll try 20° or frosted 25° white holder that need be removed https://m.aliexpress.com/item/32982811233.html
Unheard
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For outdoor, maybe the original optics will do. It gives a lot of throw. I recommend using a 219C at 4000K, that gives a nice beam and a larger hotspot. This is my only C01S still with original optics.

Smile, you cannot kill them all.

Sari33
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Thought the Led die size on TIR lens had no effect for the hotspot width. Good to know it does Thumbs Up
Also,maybe in real there is small difference betwin frosted 25° and 45 ° lens

MoreLumens
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Yes, ordered those optics + some 20 mm ones too. Total was only 0.6 € with coupon.

Also ordered GREEN C01S from Sofirn. Innocent

Cemoi
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Unheard wrote:
Before applying heat, see if you get it loose without.
I had to apply moderate heat, using a hair dryer, then unscrew very hard using two pliers.

Once opened, I replaced the stock optic with a 20° Shamian (frosted) from Yajiamei Optics, like I did to successfully improve the beam of my Skilhunt E3A.

No more rings, but although I don't have a way to measure it, I notice a noticeable decrease in brightness WRT the original optic, both in direct lighting and in a ceiling bounce test.

A piece of DC film on the original optic gives as good a result on the beam, without any noticeable brightness loss.

Strangely I had not noticed such a dimming effect on the E3A with the Yajiamei optic, but maybe I did not compare both options carefully enough.

Ultrafire C3 2AA / Akoray K-106 / Nitecore LR10 / Manker E03H / Fenix HL10 / Zebralight H501R + H51W + H53c / DQG Hobi / Astrolux M01 / CooYoo Quantum Ti (lost) / BlackWater Kite Al / Emisar D4v2 (Nichia E21A) / Sofirn C01S / Skilhunt E3A

MoreLumens
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Remember that also boiling water works pretty nicely to get glue loose. Did that when I swapped 219b into my Fenix MC11. Probably trying same trick with C01R when optics arrive if that is also glued. Min or two in boiling water and glue seems to soften and off goes the bezel.

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