Acebeam x70

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BlueSwordM
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Thanks to you all for the answers.

The reason I thought forward voltage of an LED would go up is because of my experience in CPU and GPU over clocking.

See, when you up the voltage and frequency beyond its normal parameters, as you may already know, the additional power creates more resistance, and therefore more heat.

Then, what happens of this effect is that it accentuates electromigration since electrons have less incentive to stay inside of the silicon transistors, and if there is too much electromigration, boom! a crash even before speed ans temperature were a limit for the chip itself.

I had noticed this on my GPU, when I kept temperatures below 40°C, I could achieve massive frequencies and push voltage to its limit without any crashing.

Once I reached even 1°C above that threshold, it crashed. And observing the voltage and current behavior, I noticed that voltage slowly upped as the temperature went up, as well as current. Lowering the fan speed did this and if the voltage was not locked, this is what would happen.

Thanks for the explanation everyone again!

JasonWW
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Parametrek wrote:

On a related note I’m always kind of amazed that direct drive FET lights work at all. The wires and contacts and the battery itself form a positive coefficient that magically balances out against the LED that is trying to self destruct.

Oh it is trial and error for sure. Many emitters get burned up before finding the limits. You have to get everything matched just right. The xhp50.2 has a tendency to burn up on a pair of weak 18350 cells while the 70.2 can handle a pair of the best 26650 cells. You can also help control things by emitter wire size and length to add that extra bit of resistance. Sometimes you want to bypass the battery springs and sometimes you don’t. Too hot of a combo can be tamed by using a weaker battery, etc…

My Convoy L6 thread with XHP70.2, Texas Avenger FET driver, Narsil v1.2 ramping firmware (old), lighted side switch and cut down SMO reflector. Lots of amp draws on stock driver as well. 

My Supfire L5-S thread with XHP70.2, 26350 cells (4,100 lumen!), Texas Avenger FET driver, NarsilM v1.0 ramping firmware and lighted side switch. My mini L6! 

9 NarsilM user videos for BLF Q8, GT, GT Mini and ROT66

Texas_Ace BLF Calibrated Lumen tube

Maukka Calibration Lights for DIY Lumen Measuring Devices 

Review Jaxmnve M1 Stainless 10180 Keychain light

hehaw77
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interesting stuff… Now where’s that Acebeam X70 ?

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mortuus
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hehaw77 wrote:
interesting stuff… Now where’s that Acebeam X70 ?

Still testing it etc last i heard… they can take their sweet time too, not like anyone else have something at 40k lumens coming anytime soon unless Imalent pulls an 50k haha…

...where Frugal meets with Flashlight!

hehaw77
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true but there are modded light that are much higher… than 40K

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mortuus
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hehaw77 wrote:
true but there are modded light that are much higher… than 40K

yes true, but talking production lights nothing ive seen that comes close to the x70 yet..

...where Frugal meets with Flashlight!

hehaw77
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mortuus wrote:
hehaw77 wrote:
true but there are modded light that are much higher… than 40K

yes true, but talking production lights nothing ive seen that comes close to the x70 yet..

Not true DX80 32K lumen…

Pussycat pussycat where are you? What's up pussycat meow meow meow. "Tom Jones"

BlueSwordM
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Not sustainable, and quality control has been even worse than Haikelite lights sometimes.

hehaw77
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BlueSwordM wrote:
Not sustainable, and quality control has been even worse than Haikelite lights sometimes.

I own one… quite sustainable…. and quality is just fine… at this point in the cycle… most kinks are out of the light…

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mortuus
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hehaw77 wrote:
mortuus wrote:
hehaw77 wrote:
true but there are modded light that are much higher… than 40K

yes true, but talking production lights nothing ive seen that comes close to the x70 yet..

Not true DX80 32K lumen…

well yes but imalent has alot of quality issues imo its worse then olights x9 even tho more lumens the body cant handle that lumens from what ive seen. I wouldnt call that brand quality exactly acebeam and olight are on a whole different level.

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Th558
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You can get 2 DX80s for the price of one of these…Was expecting at least 50k at this price. I think they can push out more lumens but they’ll do it after a competitor releases something brighter.

BlueSwordM
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Umm, that would be extremely hard to do even with 8 cells.

With with 8 30Qs, you would need to push above 500W! At a max of 70W per cell, that would mean a max of 560W! At 50k lumens, we are at the limits of 8 cell packs unless we go bigger.

Also, even with active cooling, how are you going to get rid of 500W in an LED flashlight? You would need to push an absolutely massive heatsink with a vapor chamber and some monster fans, or watercooling, which is not doable in a flashlight.

JasonWW
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Th558 wrote:
You can get 2 DX80s for the price of one of these…Was expecting at least 50k at this price. I think they can push out more lumens but they’ll do it after a competitor releases something brighter.

The DX80 can only do 7k lumen continous. The X70 should do much more. 20k, 30k, maybe even 40k continous. For those that need this massive continous output, there is nothing even close.

My Convoy L6 thread with XHP70.2, Texas Avenger FET driver, Narsil v1.2 ramping firmware (old), lighted side switch and cut down SMO reflector. Lots of amp draws on stock driver as well. 

My Supfire L5-S thread with XHP70.2, 26350 cells (4,100 lumen!), Texas Avenger FET driver, NarsilM v1.0 ramping firmware and lighted side switch. My mini L6! 

9 NarsilM user videos for BLF Q8, GT, GT Mini and ROT66

Texas_Ace BLF Calibrated Lumen tube

Maukka Calibration Lights for DIY Lumen Measuring Devices 

Review Jaxmnve M1 Stainless 10180 Keychain light

hehaw77
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JasonWW wrote:
Th558 wrote:
You can get 2 DX80s for the price of one of these…Was expecting at least 50k at this price. I think they can push out more lumens but they’ll do it after a competitor releases something brighter.
The DX80 can only do 7k lumen continous. The X70 should do much more. 20k, 30k, maybe even 40k continous. For those that need this massive continous output, there is nothing even close.

That’s a lot of assumptions…. as for the DX80 let’s define continuous… eg… maintains without issue?

Because I can sure fire it up at 32K lumen and keep it there for a while with mine… its still ok to hold as long as you hold it via the battery tube…

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BlueSwordM
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@hehaw77, first off, many reviews have noted that the light can’t actually output 32 000 lumens, but more like 28000 lumens. So less heat is produced there.

Second, can it hold that brightness for more than 3 min? Well, time it. See how long you can hold it before it either goes down to 7000 lumens because of the timer, or because it thermal throttles.

It has been noted that the DX80 under sustained load, gets very hot until the thermal sensor kicks it and thermal throttles it down.

hehaw77
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mortuus wrote:
hehaw77 wrote:
mortuus wrote:
hehaw77 wrote:
true but there are modded light that are much higher… than 40K

yes true, but talking production lights nothing ive seen that comes close to the x70 yet..

Not true DX80 32K lumen…

well yes but imalent has alot of quality issues imo its worse then olights x9 even tho more lumens the body cant handle that lumens from what ive seen. I wouldnt call that brand quality exactly acebeam and olight are on a whole different level.

I just finished telling you the quality issues with this light are pretty much fixed… your living in the past… if you buy the 2nd gen ones they are just fine..or by now 3rd or 4th gen…. if you owned one you would know.. not just hearing whiners…

Well yes the Olight is a high quality light … their factory and their processes for making a light are quite impressive.
But again your “paying” for it….

Can’t speak for all of you but I’m grateful to Imalent for pushing the boundaries with their light. No one “to date” in a production environment has topped it yet.

While I’m waiting for the release of the Acebeam x70 its obvious they are having issues controlling the heat/ max output combo.

I just hope they don’t pull an “Olightened” moment and take 2 years to release the light similar to Olight announcing theirs 2 years ago but just releasing it now…

Putting pricing on your website which by the way is now 649 ; don’t think they received a good reception @ 749 lol…

Doesn’t mean anything till they release the light; otherwise its just hogwash….

Did any of you see Olights initial release of the x9r? With the fan you would slot it in on the side of the head etc…?
It’s obvious why they abandoned it…. easier to just restrict max lumen to 3min and have the user cycle in and out of it , than have a user stay in that mode say for 10-20 min….

Pussycat pussycat where are you? What's up pussycat meow meow meow. "Tom Jones"

hehaw77
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BlueSwordM wrote:
@hehaw77, first off, many reviews have noted that the light can’t actually output 32 000 lumens, but more like 28000 lumens. So less heat is produced there.

Second, can it hold that brightness for more than 3 min? Well, time it. See how long you can hold it before it either goes down to 7000 lumens because of the timer, or because it thermal throttles.

It has been noted that the DX80 under sustained load, gets very hot until the thermal sensor kicks it and thermal throttles it down.

Again I own one do you? Have you held one in your hand and used it? It does output 32K lumen and over time yes it will go down… as will all lights putting out that much power….

Now to set things right here… I’m not 100% sure of the time 20 min or something like that… one user took it up north in -20 weather and was able to keep max lumen for a long period of time can’t recall the exact time 15 min 20 min I can’t remember… obviously the weather played a role.

Now I’m not an Imalent fanboy but for people that don’t actually have one and just read old posts … that don’t carry a lot of weight now… its time to take a different look at the DX80 … still for the price… can’t go wrong….

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seery
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Even the newest DX80’s will only hold max output [~25k lumens] for 2-3 minutes. And as others noted, it’ll only do 7k lumens continuous.

The QC and overall build quality is poor compared to the lights that Fenix, Thrunite and Acebeam are putting out.

My wife took the DX80 with her one night up to the barn, when she got back to the house she said this things like those $2 flashlights in the grocery store checkout lines…only bigger.

hehaw77
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lol…. spare me seery… I don’t know what DX you have but mine holds for quite a while… and to compare it to a grocery store flashlight is ridiculous and I own acebeams, Olights, etc.. eagletec… and there isn’t that much of a disparity like your making it sound

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hehaw77
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seery wrote:
Even the newest DX80’s will only hold max output [~25k lumens] for 2-3 minutes. And as others noted, it’ll only do 7k lumens continuous.

The QC and overall build quality is poor compared to the lights that Fenix, Thrunite and Acebeam are putting out.

My wife took the DX80 with her one night up to the barn, when she got back to the house she said this things like those $2 flashlights in the grocery store checkout lines…only bigger.

hmm.. ok sell me yours then… I’ll gladly take it from you since its only grocery quality say 20 bucks should cover it? Just send me your email and I“ll paypal you the money…

Pussycat pussycat where are you? What's up pussycat meow meow meow. "Tom Jones"

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no internal fans ?

external fan in a handle ?

????

find all available items in this list

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find a short description about my idea here

 

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wow thats weird, must say it looks very clumsy and ugly that design even for an acebeam i expected more…. so that thing is gonna suck out all the hot air somehow or?

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seery
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Interesting.

A removable fan that doubles as a carry handle and runs off a single 18650.

My guess is it’ll work far better at actually cooling than any built it fan. And it would allow the light to remain waterproof.

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M4D M4X wrote:


no internal fans ?


external fan in a handle ?

????

Wait is this a joke? Big Smile

JasonWW
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mortuus wrote:
so that thing is gonna suck out all the hot air somehow or?

That’s a squirrel cage fan, it’s blowing air in (or at the side of it).
seery wrote:

My guess is it’ll work far better at actually cooling than any built it fan. And it would allow the light to remain waterproof.

Being waterproof was never a problem, it was just the fans getting wet that could be an issue over time. The fan will still get wet, but here it looks like it’s easy to replace.

I’m not sure it would work better at cooling or not. It would have to route the cooling air through the center of the flashlight, of course. If it just blows air onto the exterior of the light, the cooling will be inferior.

My Convoy L6 thread with XHP70.2, Texas Avenger FET driver, Narsil v1.2 ramping firmware (old), lighted side switch and cut down SMO reflector. Lots of amp draws on stock driver as well. 

My Supfire L5-S thread with XHP70.2, 26350 cells (4,100 lumen!), Texas Avenger FET driver, NarsilM v1.0 ramping firmware and lighted side switch. My mini L6! 

9 NarsilM user videos for BLF Q8, GT, GT Mini and ROT66

Texas_Ace BLF Calibrated Lumen tube

Maukka Calibration Lights for DIY Lumen Measuring Devices 

Review Jaxmnve M1 Stainless 10180 Keychain light

JasonWW
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LichtAn wrote:

Wait is this a joke? Big Smile


That looks like a new Acebeam model and there is no trace of the old fan setup. Seems kind of real.

It’s like when we were joking about making an active cooled flashlight by strapping a fan to the outside of a regular flashlight. It looks like they actually did that. That was supposed to be a joke. Facepalm

My Convoy L6 thread with XHP70.2, Texas Avenger FET driver, Narsil v1.2 ramping firmware (old), lighted side switch and cut down SMO reflector. Lots of amp draws on stock driver as well. 

My Supfire L5-S thread with XHP70.2, 26350 cells (4,100 lumen!), Texas Avenger FET driver, NarsilM v1.0 ramping firmware and lighted side switch. My mini L6! 

9 NarsilM user videos for BLF Q8, GT, GT Mini and ROT66

Texas_Ace BLF Calibrated Lumen tube

Maukka Calibration Lights for DIY Lumen Measuring Devices 

Review Jaxmnve M1 Stainless 10180 Keychain light

seery
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JasonWW wrote:

That’s a squirrel cage fan, it’s blowing air in.

I’m not sure it would work better at cooling or not.

Doesn’t the [handle mounted] fan housing look to be much larger than what would have been feasible with built in fans?

mortuus
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Jason how is that gonna help suck air in ? i dont get it u want hot air go out from that light no?

also i see on that pic no more steel bezel, the proto with 3 fans had that..

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JasonWW
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seery wrote:
JasonWW wrote:

That’s a squirrel cage fan, it’s blowing air in.

I’m not sure it would work better at cooling or not.

Doesn’t the [handle mounted] fan housing look to be much larger than what would have been feasible with built in fans?


Larger, yes, but cooling efficiency is going to be affected by the surface area the air flows over. If it’s just blowing air over the exterior then it’s not going to be very efficient at all compared to the old design.

My Convoy L6 thread with XHP70.2, Texas Avenger FET driver, Narsil v1.2 ramping firmware (old), lighted side switch and cut down SMO reflector. Lots of amp draws on stock driver as well. 

My Supfire L5-S thread with XHP70.2, 26350 cells (4,100 lumen!), Texas Avenger FET driver, NarsilM v1.0 ramping firmware and lighted side switch. My mini L6! 

9 NarsilM user videos for BLF Q8, GT, GT Mini and ROT66

Texas_Ace BLF Calibrated Lumen tube

Maukka Calibration Lights for DIY Lumen Measuring Devices 

Review Jaxmnve M1 Stainless 10180 Keychain light

JasonWW
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mortuus wrote:
Jason how is that gonna help suck air in ? i dont get it u want hot air go out from that light no?

That style of fan sucks the air in from the side and blows it out directly onto the light. The air makes a 90-degree turn with this style of fan. So it’s not going to be sucking any air out of the light. It’s strictly going to be blowing air.

My Convoy L6 thread with XHP70.2, Texas Avenger FET driver, Narsil v1.2 ramping firmware (old), lighted side switch and cut down SMO reflector. Lots of amp draws on stock driver as well. 

My Supfire L5-S thread with XHP70.2, 26350 cells (4,100 lumen!), Texas Avenger FET driver, NarsilM v1.0 ramping firmware and lighted side switch. My mini L6! 

9 NarsilM user videos for BLF Q8, GT, GT Mini and ROT66

Texas_Ace BLF Calibrated Lumen tube

Maukka Calibration Lights for DIY Lumen Measuring Devices 

Review Jaxmnve M1 Stainless 10180 Keychain light

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