brokenknee

That was one long thread, mostly about people wanting to know when they were going to receive their order. I read all 15 pages (very fast so I might have missed something) but I only saw one reference to run time that was 45 minutes and that was by doing the "math".

There was also one linky https://www.candlepowerforums.com/vb/...d.php?t=213131 that had a review. He stated that at 45 minutes he noticed a significant drop in light output and stopped the test. I stated that I noticed a significant drop within 30 minutes. However the light was still plenty bright.

I stopped my test after 4 hours and 20 minutes as at that time I felt the light was to dim to use for biking. I made reference to the light output as compared to my fenix l2d q5 at various times in the test. These comparisons would be subjective as I do not have a light meter and was only going by what I thought was an equivalent light output.

I am not a flashaholic so I do not know how the ambient temperature effected the run time. Usually the colder temps would mean less runtime; however with the high heat output of the P7 maybe it increased it. I do not know.

I do appreciate the link and found it interesting. As stated many times in the link you provided Wayne seams to be a great guy, just bad about meeting deadlines.

Cyclist0383

^^^

When talking about runtime most folks mean how long it runs until it reaches 50% of original output.

brokenknee

Thanks, I was not aware of that. Then 45 minutes would be about right.

I would like to add that it was still plenty bright to use as a light for more than two hours. Just not P7 bright.

Unknown Cyclist

I'm missing something here....

I reviewed a 2 x 18650 regulated output torch.

The output is constant for 5 hrs 43 minutes on low and then cuts off.

Seriously...what's the point in comparing it to an unregulated single cell torch **********

It's hardly comparing like and like ?

You might as well just buy a P7 LED and optics, mount it on a reflector bracket and run it from a single cell.

Jeez....

brokenknee

You are correct. I made my statement out of ignorance and for that I apologize.

It appears that you have quite a light there. While I still think the EDC P7 is a very good torch, it appears that it is not best suited for a bike light and not advertised as such.

Again, except my apology as I have learned from my ignorant statement.

Unknown Cyclist

Not really something that appeals to me tbh.

I'd sooner scratchbuild a P7 lighting system than vandalise a torch

The reason I bought the Aurora was to have a working light immediately as my upgraded 'luxeon' headlight is a bit poorly, leaving me nearly in the dark.

Also, my 3 x R2 dynohub powered lights aren't finished, my cycle helmet lights are undergoing a MKII revision and I'm still considering a power source for my HID project....

Unknown Cyclist

Hey Guys !!

Is this the torch you are talking about ?



$130 ?? is it made from platinum ?

The claimed runtime is 2 hours.

The 18650 is likely to be 2500 mAh, which means it can provide 1250 mA per hour.

Even if the P7 LED is directly driven (so there are no losses due to regulation) it's only going to get an average of 1.25A over 2 hours.



At an average of 1.25A it would be lucky to produce 350 lumens.

Conversely, if the battery did manage 3.6V under load (2.8A) it might put out 700 lumens - but only for 54 minutes and that would be in a perfect (100% efficiency-no heat generated) world and with an optimal battery and P7 LED.

It doesn't look as good as a lot of the torches on DX....so...what's the crack ?

Cyclist0383

Go and ask here for a well informed answer: https://www.candlepowerforums.com/vb/index.php?

socalrider

You will never know the quality of a product like this until you have one in your hand.. There is a lot of care and attention to detail in the electrolumens flashlights.. Unlike most of the other P7 flashlights that are most likely made for very cheap by paying people slave wages.. These are made by an engineer in Oregon that has been making flashlights for many years.. The 2 hours runtime is a little overblown for high mode but they all seem to overstate the runtime.. By the way I have a few lights from Wayne and each is still running to this day, some are over 5 years old..

Unknown Cyclist

Are we talking about the same torch ?

It says 45 mins runtime on the site not 2 hours.

Also it hasn't got modes just on and off ?

As suggested by Ziemas I had a look on the candlepower forum.

"After 10 minutes, the body became uncomfortably hot (keep in mind that I am in foodservice, and have been know to take pans out of the oven onto the stovetop with bare hands). After 20 minutes, the body temp was so high, that I turned it off for a few minutes because I feared for the Li-ion’s safety. I let it could cool down, because of the high temps to the batts. Total run time was 45 minutes when I noticed a significant decrease in brightness, at which time I stopped the test.

Edit: for the above temps, I left it on a table top w/o touching it, to accumulate max heat. I re-did the test, but this time holding it in my hand the whole time. From 5 to 20 minutes, there was so much heat that I had to switch hands, but it never became so hot that I had to give up turn off the torch. Keep in mind, though, that I have asbestos hands. You may have to switch hands more often or turn it off, if the heat gets too high"

Sounds great.

brokenknee

Yes we are talking the same torch.

I just rechecked website and it does say two hours. https://elektrolumens.com/EDC-P7/EDC-P7.html

I think were you got the 45 minutes was from the candlepower forum.

Yep, no modes, just on and off.

dwilbur3

I'm all for "Made in the USA", and I'll happily pay for quality. But I also read that review and that flashlight doesn't seem to work near as well as my Aurora or the one UC got.

My Aurora P7 never gets hot to the touch and run time is at least an hour on one battery. Not getting the love for this other light. Is his light substantially cheaper than $36?

SlimAgainSoon

Not to hijack this technical post, but I have a question.

I've got a P7 on order, and I'm trying to decide how to use it.

Currently, I have my lights on my helmet -- nothing on the bars.

Does anyone run a P7 on their helmet? How does that work out? Is it too bright for helmet use?

Thanks.

brokenknee

You can't hijack a hijacked thread, (I think it's in the rules somewhere) I already hijacked this thread (unintentionally)

Sorry can't help you on the P7 on the helmet, don't wear one. (That explains a lot. )

socalrider

With a multimode p7 you can find that medium or low modes will work fine for a helmet light.. I found the P7 a little big for my liking as a helmet light.. I use an L-Mini Q5 light on my helmet.. It is much smaller and is more of a thrower than the flood you get from a p7.. I use my helmet light more to get attention of drivers at night, by looking directly at them.. The P7 will give you all the light you need on the bars..

Unknown Cyclist

I'm afraid it's not cheaper than $36.

It's $130.

Doesn't even look very well made or finished.



Seeing as it's direct drive and a very basic turned aluminium sleeve, I could make one and it would at least look nice.

Unknown Cyclist

It might be a bit heavy.

I've just ordered one of these to try:



https://www.dealextreme.com/details.dx/sku.1993

Seems like a bargain.....

If it doesn't work out as a helmet light I can rob it for parts (optics led) or maybe even use it as a torch......

Cyclist0383

Exactly what battery are you using in the L-Mini?

socalrider

The L-mini uses an 18650 cell.. here is some more info

https://www.cpfmarketplace.com/mp/sho...d.php?t=177921

There is going to be a new l-mini coming out next month at shining beam..

Cyclist0383

I know it uses a 18650, but I've heard that some protected cells don't fit. Exactly which cell are you using?

socalrider

I have gotten the aw protected cells to work, others are a very tight fit.. Since it has a voltage cutoff built into the flashlight you can use unprotected cells with no problems.. I personally use these unprotected cells.. I have found them to be great performers..

https://cgi.ebay.com/Rechargeable-3-7...QQcmdZViewItem

SlimAgainSoon

Did someone hijack my hijack?

I've got two Fenix flashlights on the helmet now. I'm hoping a P7 will be lighter, overall, than those two.

I am considering putting the P7 on the bars, though, and going with on Fenix on blink and the other on Turbo blast (or medium, maybe, to stretch the battery), but on the helmet.

seeker333

from DX,
trustfire 2500 sku 5790 will not fit L mini - too fat

ultrafire 2400 (unprotected) sku 1213 will fit L mini - SB sells these too, so get some when you get the flashlight

dclaryjr

I using a P7 on my helmet because it switches modes on its own when on the bars. It is a little heavy but my commute is short (around 30 Minutes max). I like being able to point that sucker where ever I want!

SlimAgainSoon

Your p-7 helmet-mount -- that looks like something I could handle.

At one time I had three small flashlights up there -- I doubt the single P-7 would weigh as much.

I've got a PB SuperFlash mounted on the back, same as you.