Any rumors as to when we will see a fenix mc-e or p7 light?

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Please don't say JB are lying when they're doingh the exact opposite.

First of all I openly admit that I am not an expert; secondly I never said they were lying. I said they were trying to deceive people. The following is taken directly from their website.


"M1X
Model: M1X
LED: CREE MC-E
Max Output: 450 Lumen (Torch Lumen) / 700 Lumen (LED Lumen)"


Why mention 700 lumens when the light DOES NOT put out 700 lumens? You have to read very carefully to see that it only puts out 450 max lumens. That is deception - why else would there be a need to advertise 700 lumens other than to deceive those who do not read carefully?
Nobody who is buying a light to stick batteries in it and turn it on (I'm excluding modders and such) cares what the "capability" of the emitter is, they care what emitter actually puts out, or even more accurately - what gets out in front of the lens. A look at all of their other products on their website and there is no reference of LED lumen; they just wanted to display "700" because it looks nice on paper.

I'm not saying any company is perfect, and I'm not trying to start a war, just saying I would expect better from a company as well regarded around here as they are; I expect that from DX or the like because you know what you are getting into.
 
First of all I openly admit that I am not an expert; secondly I never said they were lying. I said they were trying to deceive people. The following is taken directly from their website.


"M1X
Model: M1X
LED: CREE MC-E
Max Output: 450 Lumen (Torch Lumen) / 700 Lumen (LED Lumen)"


Why mention 700 lumens when the light DOES NOT put out 700 lumens? You have to read very carefully to see that it only puts out 450 max lumens. That is deception - why else would there be a need to advertise 700 lumens other than to deceive those who do not read carefully?
Nobody who is buying a light to stick batteries in it and turn it on (I'm excluding modders and such) cares what the "capability" of the emitter is, they care what emitter actually puts out, or even more accurately - what gets out in front of the lens. A look at all of their other products on their website and there is no reference of LED lumen; they just wanted to display "700" because it looks nice on paper.

I'm not saying any company is perfect, and I'm not trying to start a war, just saying I would expect better from a company as well regarded around here as they are; I expect that from DX or the like because you know what you are getting into.
Jetbeam is probably quoting emitter lumens from the LED manufacturer (theoretical lumens) instead of Out the Front lumens (torch lumens). Most manufacturers use emitter lumens. Jetbeam is not trying to deceive anyone.
 
Max Output: 450 Lumen (Torch Lumen) / 700 Lumen (LED Lumen)

It's similar to when audio equipment mfrs state frequency response as

"20-20,000 Hz
38-16,000 Hz +/- 3 dB"

Some of the less-reputable companies provide only the first specification: 20-20,000 Hz, so that unsuspecting buyers think "Oh wow, these $5 headphones are just as good as your $200 headphones (which have a specification of 20-20,000 Hz +/- 3 dB)"

JetBeam is honourable enough to provide both specifications.
 
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Jetbeam is probably quoting emitter lumens from the LED manufacturer (theoretical lumens) instead of Out the Front lumens (torch lumens). Most manufacturers use emitter lumens. Jetbeam is not trying to deceive anyone.

That would imply an out the front efficiency of less that 65%, which is supposed to be the low end of an "average" flashlight. I've been looking at MrGman's Actual lumen sticky and even a $40 Dorcy is getting better than 70% efficiency. Most of the lights I've checked are closer to 80% or better. Surely this can't be correct?

Again I will state I'm a newbie, but some simple math and some deductive reasoning implies the "700 lumen" is not emitter lumens but rather "rated" lumens of the led. Am I missing something?
 
Guys ... please leave the Jetbeam and ratings discussion out of this thread, which is about the Fenix. Feel free to open a thread about the Jetbeam or continue in th ethread already running.
Thanx 🙂
bernie
 
We'll need to determine how the tk40 wires the mc-e to see if you can use other battery combinations.

if all 4 dies are serial, and all 8 batts are serial...it will be a boost circuit and bypassed to DD on 3x18650.
if it's a 2s2p and batts are 4s2p, it'll be a buck circuit w/ a probable max of 5-6v and probably nearing DD on 2p 18650.
 
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8xAA?? Why not 3x18650 or 4xCR123?

It's 8xAA because a L2D-CE is 2xAA. This is effectively four of them together. Historically, Fenix has been slow to adopt the 18650 cells. The L1 and P1 lights were their bread and butter for a long time.

Why not CR123A cells? Eight AA cells (NiMH) can give you 2500 mAh at 1.2 volts per cell. That's 24 watt hours. You would need more than six CR123A cells to get the same power (3.0 volts x 1200 mAh x six cells = 21.6 watt hours). I'll assume that based on Fenix's perception of their intended market's reaction to lights such as the Surefire M6, people don't want to burn up that many CR123A cells per hour. The AA solution gives you a light about the size of a Mag 2D, and can be easily fueled and recharged by any civilian.

Where do I send my $150? I want to buy one now...
 
Why not CR123A cells? Eight AA cells (NiMH) can give you 2500 mAh at 1.2 volts per cell. That's 24 watt hours. You would need more than six CR123A cells to get the same power (3.0 volts x 1200 mAh x six cells = 21.6 watt hours). I'll assume that based on Fenix's perception of their intended market's reaction to lights such as the Surefire M6, people don't want to burn up that many CR123A cells per hour.

I for one am thankful they are not asking me to burn through $10 worth of primaries (at the cheapest price available that is; B&M store bought would be $30) every two hours. It would be like "Hey look at my cool light." "OOOHHH, AAAHHH." 5 seconds later, "Ok now I need to turn it off to save on batteries."
 
I for one am thankful they are not asking me to burn through $10 worth of primaries (at the cheapest price available that is; B&M store bought would be $30) every two hours. It would be like "Hey look at my cool light." "OOOHHH, AAAHHH." 5 seconds later, "Ok now I need to turn it off to save on batteries."
Also, keep in mind from an engineering standpoint, a high rate of discharge on low voltage cells like 1.5 (or 1.25 for nimhs) puts you at a greater risk of reverse charging a cell. Alkalines will leak like crazy and nimh's will get killed. At currents close to an amp, you're pushing the limits of AA's. 😛
 
Why not CR123A cells? Eight AA cells (NiMH) can give you 2500 mAh at 1.2 volts per cell. That's 24 watt hours. You would need more than six CR123A cells to get the same power (3.0 volts x 1200 mAh x six cells = 21.6 watt hours). I'll assume that based on Fenix's perception of their intended market's reaction to lights such as the
Where do I send my $150? I want to buy one now...


Assuming that you'd really like to use those high-self discharging NiMH peices of crap :sick2: , then I can see your point. But when you move up to better chemistries-- such as Sanyo Eneloops (2000 mAh), then things start to really favor CR123s, wich are 1500 mAh and not 1200. Also, keep in mind that a 6xCR123 body is a whole lot more compact and lighter form factor than 8xAAs, hands down. :thumbsup:
 
I'll admit bias because I do not like CR123 batteries. 18650 seem to be favorites around here, I just have not yet made the plunge. But yes, AA will always have it's tradeoffs.
 
Interesting flashlight; I'm sure it will appeal to many. But definitely not me - how high quality is a flashlight if it eats through eight batteries an hour? (not an unreasonable guess IMHO). They certainly have less competition... but then they would have no competition if they made a it small, and fully utilized the emitter. In the end, this feels like a decent and operable idea stumbled upon... not their goal or what we've been waiting for. YMMV
 
how high quality is a flashlight if it eats through eight batteries an hour?

That does not make sense. The mission of this light is to produce a certain flux and it shall run on the AA format. The consequence is that the batteries won't last long. That is not a quality problem however, you can call it a design problem from your POV, but others might see this differently. It is a choice they made that might or might not appeal to you. Just because it does not doesn't make it a low quality item.



but then they would have no competition if they made a it small, and fully utilized the emitter.

Smaller ... would mean ...
a) even shorter runtime and
b) not possible in the AA format and thus
c) a different design would be needed, a different light


not their goal or what we've been waiting for

Their goal might not be what you have been waiting for.



This is the key. Because everyones mileage will vary. Evaluate a light for what it is, not for what you want it to be.


bernie
 
I for one am thankful they are not asking me to burn through $10 worth of primaries (at the cheapest price available that is; B&M store bought would be $30) every two hours.
I'm glad I don't have any 2CR123 light. $8 each every two hours. Nightmare:thumbsdow

Alkalines will leak like crazy and nimh's will get killed.
Ni-MH's? It pulls more than 4A from single cell? 8*4*1,2=38,4, WOW almost 40 Watts! But if it's less - it's safe for Ni-MH.

Assuming that you'd really like to use those high-self discharging NiMH peices of crap :sick2: , then I can see your point. But when you move up to better chemistries-- such as Sanyo Eneloops (2000 mAh), then things start to really favor CR123s, wich are 1500 mAh and not 1200. Also, keep in mind that a 6xCR123 body is a whole lot more compact and lighter form factor than 8xAAs, hands down. :thumbsup:
If you use your flashlight a lot (and I do), you charge them at least once a month and there's no visible self-discharge effect. And I have 700mAh more from each cell. CR123 has 1500mAh at very low discharge rate, in a flashlight it's safe to assume they're 1200mAh. 6xCR123 are more compact because there are less betteries. AA's are longer but CR123 is thicker.
 
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Assuming that you'd really like to use those high-self discharging NiMH peices of crap :sick2: , then I can see your point. But when you move up to better chemistries-- such as Sanyo Eneloops (2000 mAh), then things start to really favor CR123s, wich are 1500 mAh and not 1200. Also, keep in mind that a 6xCR123 body is a whole lot more compact and lighter form factor than 8xAAs, hands down. :thumbsup:

Apples to apples, AA lithium primaries have more stored energy than CR123 primaries, AA rechargables (both NiMH and Li-Ion) have slightly more stored energy than RCR123 cells.
 
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