The There Are No Stupid Questions Thread

Is shelf better at heat transfer than pill design?
How thick is the S3 shelf?

Sorry, I misread your question. :man_facepalming: The link I gave is for the older style S2+ pills.

I think the only place you can get the newer rectangular ones is directly from Simon (Convoy). You could ask him about it. Maybe he would be willing to add them to his website, like he did with the thin retaining ring: thinner retaining ring for S2+

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What’s a good place to buy kapton tape? No brick and mortar hardware stores seem to have them where I live. I’m concerned about fakes from amazon/ebay/aliX. Any good sites to buy them from? I live in the US if that info is helpful. Main intended purpose is to secure button top adapters onto flat top batteries.

What is a fake for you? All tape I got from AE works as expected.

Kapton tape doesn’t work for this. It’s too stiff. You need thin PVC heat shrink tubing.

No idea, so I asked. And thanks, I’ll look into that

Can aluminum be anodized with GITD pigment?
Maybe we should set a group buy for S2+ host

What is going in this category? About the Other Types of Lights category
It didn’t display a new post in the general forum page. And no one has posted since it was created until now.

Machinist and lathe enthusiasts explain why this isn`t doable?


Imagine the possibilities with this kind of pill* for Convoy L and M series
(head to body tube ratio 3:1 :laughing: )
These could be used mostly for emergency cases where 50%+ is needed to run till the battery dies.

Was the SpaceX Starship landing (08-26-25) a success?
I’m not sure I understand what happened. It seems the Starship had a controlled landing into the Indian Ocean which kinda destroyed the ship? It’s getting harder to figure out what is accurate news…

Has anyone cut an S3 and rethread the head for the bezel to make a short mule?

manufacturers should use plumbing dimensions so we can easier get different material pills

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something like this could hold turbo for a decent amount of time
The fins could be longer towards the front and smooth into the head/bezel
Someone should make these as replacement pills for C8, LX type of flashlight where the head is wider than the body

There should be a factory built flashlight with fins as wide as the head

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There is also an idea of using gallium-aluminium alloy adjustable melting point - and the huge amount of latent heat required - to cool the emitter before reaching the steady state. There are papers on it, but I don’t know of a practical implementation.

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If you had to pick one of these, which one is more likely to happen?

We will say a single cell 18650 light. VTC5D versus GA 10 amp.

We will say it’s a modified light that needs 30 amps to push it to its limit. Highest output.

Which one of these batteries will make the LIGHT hotter?

A 10 amp GA battery that cannot deliver the 30 Amps OR The 30/35A VTC5D that can meet the required Amps to push the light to its limit?

Maybe the 10 amp battery because it’s going to try and try to meet the required amps but it can’t do it?

Maybe the 35 amp because it’s pushing all that power all that output, thus creating more heat?

Remember you have to pick one or the other.

Which one is more likely to make the flashlight hotter?

A mystery wrapped in a riddle, wrapped in an enigma, then wrapped in something indecipherable!

If I was at all curious about this, I would measure the two configurations and find out rather than speculating… but that is just me.

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Sure. A thermal measurement. That’s cheating. LOL.

I want to know if someone on here knew a General rule of Thumb based on battery chemistry, ability / inability to push amps and how that’s related to heat buildup?

I’ll have to find a scientist.:zany_face:

Eve 50PL 21700 125 Amp tabless.

What kind of device will require that many amps?

I saw a guy who tested it and it was close to 120 amps.

I don’t believe any of my flashlights would benefit from that. I have a few modified ones that may draw 40 or 50 amps?

A 2-second search describes…that it’s perfect for high-performance Electric BIKES & Scooters (for rapid acceleration and sustained output), FPV Drones & RC Models (provides continuous and burst power for competitive racing), Industrial Power Tools (HD grinders, saws, and impact tools ), Robotics & Automation (supports reliable high-current draw for motors and actuators), Custom Battery Packs (top-tier option for high-performance pack assembly, and other custom energy-dense, high-current projects).

The production version is actually 50A max CDR.
But also a cell with very high current rating means it has lower DCIR and there will be lower losses and heat generated at high current in general, even if not used at max CDR or pulse ratings, so it’s still very good.

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