2014 Lupine lights - Betty TL2 with 4500 lumens! :)

[Pöbel]

Holding it will actually improve the situation as the light is then cooled by your blood. This may sound strange but as soon as the light exceeds your body temperature holding it with bare hands will actually cool it.

BUT, a light this size is never designed for continuous operation on max without stepdown. Consider the higher levels a burst mode. Light up everything for a limited time and then return to a "more reasonable" level.

 

[a.lber.to]

Indeed, you are right on both counts. It is just that holding a light which is at 55 degrees or so is not really comfortable with your bare hands... When I cook steak "sous-vide", I put it in a 51.5 degrees water bath!!!!

 

[tonkem]

Here was the US disbributor's response regarding the quick stepdown of the TL2

We ran this past Stefan in Germany and he sent us along to this review for more info on heat build up and the resulting light stepdown.http://www.taschenlampen-forum.de/l...0-lumen-test-messungen-bilder.html#post343665




See the charts and infrared shots about midway down....


The Betty TL 2 is capable of 4500 Lumens - but will only stay there with sufficient airflow. Standing still or in a hot environment it will stepdown to save itself from burning up.


Let us know if you have any other questions.

 

[bluemax_1]

Holding it will actually improve the situation as the light is then cooled by your blood. This may sound strange but as soon as the light exceeds your body temperature holding it with bare hands will actually cool it.

BUT, a light this size is never designed for continuous operation on max without stepdown. Consider the higher levels a burst mode. Light up everything for a limited time and then return to a "more reasonable" level.

Indeed, you are right on both counts. It is just that holding a light which is at 55 degrees or so is not really comfortable with your bare hands... When I cook steak "sous-vide", I put it in a 51.5 degrees water bath!!!!

What he/we meant is that if you conduct the test holding the light the entire time, a living human hand will conduct heat away from the light due to blood flow and depending on how much heat the light generates, and how quickly, the light might not reach as high a temperature due to the hand-heatsinking.

I've tried this on smaller lights with no thermal stepdown. If you turn the light on and place it on a table, it gets hot enough that after 5 minutes, it may be too hot to pick up comfortably. If I hold it in my hand from the moment I turn it on, although I can feel it get quite warm, it never gets to the point where it's too hot to hold and it will stay like this for an hour (till the battery goes flat).

The question is whether the TL2's heat conduction to the body of the flashlight and the subsequent heat conduction from the flashlight's body to a bare hand is sufficient to cope with the heat the light produces.

A hand heatsink can actually be more effective than airflow at walking speeds if the air temperature is above a certain temp (70f?) because air isn't the greatest thermal conductor (which is why jackets and coats trap air for thermal insulation).

The whole compromise between light output vs size and thermal capacity, coupled with the cost and the fact that 4500lm isn't really going to look too much brighter than 3500lm is why I'll be sticking with my TM26 and X6.

That headlamp on the other hand. I wonder what speeds at what ambient temp will be sufficient to air cool it at maximum, though realistically speaking, 1500-2000 lumens would still be brighter than most any other headlamp available.


Max

 

[tonkem]

I am thinking I will have to pick up one of the TL2 heads to use on my TL battery Runtime is only slightly less than the new 6.6 ah battery . Hard to resist...... Will have to wait til October for the release to Gretna though.

 

[tonkem]

Too bad they did not update the Wilma as well to 2800 Lumens in the flashlight form. I really like the form factor of the Wilma. They have the headlamp and bike light in the Wilma format at 2800 lumens with the new programming, but not in flashlight form. Hmmm.

 

[tonkem]

OK, so I received my Lupine Betty TL2 light yesterday, but I admit that I have had very little time to play around with it. So here are just a few very first impressions...

It is incredibly small, and light. Really. And it is amazingly well built and finished. The whole thing just oozes quality. The precision that the battery threads in with, the fit and finish of all the components, the wonderful Charger One, everything is top notch.

I set it to start with the red light (to allow me to use the light without compromising my night vision by first having to go through a white light level), and then cycle through the 2W, 22W and 45W modes (these last three modes are actually the default levels it comes shipped with). The red light at 0.8W (I would guess around 80 lumen) is bright, and quite pleasant to use. Going from the 2W to the 22W mode is a definite eye opener, FAR more so than going from 22W to 45W. In fact, though logic and physics explain why this would be so, the last step up is surprisingly underwhelming coming from 22W. Bear in mind, however, that I only tried it indoors thus far, and I expect to be pleasantly surprised when I get the opportunity to take it outdoors.

My only gripe with the light, and I feel it is an important one, is that when used indoors at normal room temperature (let's say 22 degrees Celsius), the light is only capable of staying at 45W for a couple of minutes before stepping down to 34W, then again to 28W after a couple more minutes, and then again to 22W. I have yet lo leave it sitting longer to see how low it drops due to thermal control, but given the temperature of the light at that stage (uncomfortable to hold) I suspect it will actually go even lower. This means that unless you live in the arctic, or plan to use it only in blizzard conditions, its usefulness as a hand-held 4500 lumen light is severely limited! Granted, the laws of physics are what they are, so this is to be expected given the small (tiny, really) size/mass of the light, but I suspect that this Lupine 6 x XM-L2 design works much better as a bike- or helmet-mounted light, where the relative wind would give it all the cooling it needs, than as a handheld flashlight (at least at normal ambient temperatures and walking speed).

:sigh:

a.lber.to, any more information after you have played with the TL2 for a bit? Any other impressions? Did you get the 6.6 ah battery or the 3.3 ah battery? Any beamshots versus other lights?

Thanks again.

 

[bulbmogul]

Anyone here yet receive a Betty TL2 that was ordered and shipped here in USA..? Im still waiting..

 

[tonkem]

Anyone else have any comments on this light? Gretna has them in stock now, anyone else get one?

 

[meatyinternalbacksupport]

Hi All,

Hope this is an appropriate first post.
This is the only thread in the forums on this beautiful beast so it was the only logical place for me to ask the following as I have a keen interest in this flashlight...

Does anyone know of anything out there equivalent or potentially better than this flashlight in terms of pocketable size and sheer lumens? I've done a number of searches but failed to come up with anything else out there that is in the same neighbourhood as the kit Lupine is chucking out.
I'm looking for an absolute pocket rocket with a good 'turn the night to day' flood on it and this looks to tick all the boxes from what I've seen of it. However, before dropping such a large amount of £££ on such a beast I wanted to be sure that there wasn't anything else out there that comes close to it for size and performance.

Cheers,

Meaty

 

[Bullzeyebill]

Hello Meaty, welcome to CPF. It would be good if you would start your own thread with your question. Go to the forum, Recommend me a light for......., and post it there. You are sort of hijacking this thread. Thanks,

Bill

 

[meatyinternalbacksupport]

Please accept my sincere apologies Bill and thanks for the heads up.

 

[Brokerdan]

It wasn't really clarified it this thread or in the US store http://gretnabikes.com/betty_class.asp, but as I can tell, there are 2 models the 3.3aH model is known as TLS S, this coming from this site http://www.lupine2013.de/products/flashlights also listed in the manual posted before.
As for the battery size they are using Panasonic NCR18650B http://www.lupine2013.de/products/batteries/batterytank_6_6_ah/

This is a good place to see their whole product list and expected retail prices, http://www.lupine2013.de/files/documents/Retailpricelist2014.pdf I see that you can use any 55mm lens with the light but the only one they offer is the diffusor.

Can anyone tell if these http://gretnabikes.com/betty_caps.asp or http://www.lupine2013.de/products/accessories/frontcap_betty/ colored caps are for the TL2?

I will say this 4500 lumen, cool charger, 2nd rgb led, nice look, but for a $1-2k light (with extra batteries and lenses and stuff) and especially the fact that it has a mount for 1/4 photo-thread, it better come with that cool remote control that the Betty R head lamps use too! Still on my wish list none the less

 

[tonkem]

It wasn't really clarified it this thread or in the US store http://gretnabikes.com/betty_class.asp, but as I can tell, there are 2 models the 3.3aH model is known as TLS S, this coming from this site http://www.lupine2013.de/products/flashlights also listed in the manual posted before.
As for the battery size they are using Panasonic NCR18650B http://www.lupine2013.de/products/batteries/batterytank_6_6_ah/

This is a good place to see their whole product list and expected retail prices, http://www.lupine2013.de/files/documents/Retailpricelist2014.pdf I see that you can use any 55mm lens with the light but the only one they offer is the diffusor.

Can anyone tell if these http://gretnabikes.com/betty_caps.asp or http://www.lupine2013.de/products/accessories/frontcap_betty/ colored caps are for the TL2?

I will say this 4500 lumen, cool charger, 2nd rgb led, nice look, but for a $1-2k light (with extra batteries and lenses and stuff) and especially the fact that it has a mount for 1/4 photo-thread, it better come with that cool remote control that the Betty R head lamps use too! Still on my wish list none the less

No, the colored caps you mentioned are for the Betty TL(s) only, not the new TL2. TL2 does not come with the remote either.

 

[tonkem]

Anyone have any more comments on this light? Beamshots would be nice against other Lupine products. Thanks for your help.