EastwardYJ J06

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Don
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EastwardYJ J06

Just arrived. No charged cells around as the 6 new ones are in the balance charger and probably won't be ready till morning - it's 9pm here. Hence no numbers yet, just some quick pictures. There will be a review in due course. It seems nicely made, but the pics can speak for themselves.

Nice satin finish that seems very even. Since I received it 4 hours ago, I've no idea of durability.

The light

 

DX says that it is a 4.2V maximum light. The body says otherwise. Till someone finds out the hard way, it is a 4.2V light as far as I am concerned. That said, tail current with an 18650 of unknown quality and charge state gave only 1.9A at the tailcap so it might be 8.4V capable - or might not.

Other side

 

Size comparison with some other single 18650 lights. Piritlight SG-L8, RQ thrower, butchered Uniquefire HS-802, Eastward, Solarforce L2i. As throwy 18650 lights go it is reasonably small.

More lights

 

The business end. Nicely centred LED which is an XM-L

LED

 

Body tube. Nice clean threads that have ben lubed.

Body Tube

 

The tailcap end of the tube - a nice large contact area.

Tailcap end

 

The inner side of the switch and the other end of it. It does tailstand but not as well as some.

Switch innards Tailcap

 

Back of the head.

Back of head

 

Minus front end

Guts of head

 

Deep reflector.

Deep reflector

 

Reflector dissected out. 

Reflector

 

The beam

Ceiling beamshot

 

Comparison ceiling beamshot.

Left-Right

EastwardYJ J06, Solarforce L2i with Solarforce low-voltage single-mode R2 dropin, RQ thrower. The RQ is on high and the EastwardYJ on low. The L2i is in its only mode. The hotspot in the RQ beam seems very much larger in this picture than it is to my eye - no camera sensor has remotely close to the dynamic range of a human eyeball.

Ceiling comparison

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

Edited by: Don on 01/26/2011 - 16:22
Don
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With a known to be not very good 18650, i just got

High: 2400mA

Medium: 1200mA

Low: 600mA

 

And so to the lightbox.

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

Don
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These are provisional numbers almost certainly to be revised upwards as the only charged cells I had around were two known to be not very good ones.

    Lightbox lux Lightbox lux Lightbox lux Est. Lumens Est. Lumens Est. Lumens Throw at 1 metre
Light Battery Turn-on 30 secs 2 Minutes Switch-on 30 secs 2 Minutes Lux
EastwardYJ J06 High 18650 3650 3580 2900 655 642 520 23200
EastwardYJ J06 Medium 18650 1930 1870 1814 346 335 325 12500
EastwardYJ J06 Low 18650 1038 1014 993 186 182 178 7250

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

Match
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Over 23K lux with that big of a hotspot....That's impressive.  I can't wait for the full review.  

Don
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Control

Control

 

EastwardYJ J06 Low (It also has a medium setting but I missed it)

eastward low

 

Eastward High

A lot of light

 

RQ Low

RQ Low

 

RQ High Something's wrong here - I can't see any difference between the high and low setting.

RQ High

 

Ultrafire XM-L dropin Low

UF Low

 

Ultrafire XM-L dropin Medium

UF M

 

Ultrafire XM-L dropin High

UF H

 

The Ultrafire dropin is the brightest of the three but doesn't throw nearly as well.

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

arenat
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Very good body, it lack grease under the star , perhaps adding some could improve the heat transfer and the sag in medium at least decrease a bit ...look as what i was trying to find ,too bad this month can't get it, maybe next...

Piers
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It really does look very nice, those large scallops out of the head really give it a well made look.

FlashPilot
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Great review as always Don. That’s a very nice looking host. I'm glad to see that the XML plays well with the deep reflector.
arenat
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Because I wasn't sure just check mine XM-L P10 at medium ( 1A) and has not any sag even at three or more minutes, you have there way better material to dissipate heat.

Also did a quick test regarding with or without thermal grease , not a minor thing though.

XP-G R5 attached with screws to a proper heatsink feed with an 18650 and 4 mc7135 regulators ( 1,4 A)

327 L at start  going fast (immediately ) to 310  305 at 2 minutes

326 L at start slowly going to 319 at 2 minutes

Don
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arenat wrote:

Very good body, it lack grease under the star , perhaps adding some could improve the heat transfer and the sag in medium at least decrease a bit ...look as what i was trying to find ,too bad this month can't get it, maybe next...

 

Since it'll be easy to do, I'll undo the screws holding the star down (It appears to be a 20mm star which I've not seen in a while) and see if there is anything under there - if the thermal compound is applied properly it shouldn't show, but like you, I doubt it is there at all.

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

moviles2
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23200 lux@1m at only 2.4 amp??????

 

 it have screws, I like that, and apears to have good dropin

Don
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Yes - when i first got into lights, all the LEDs were mounted on 20mm stars and almost all of them had screws holding the star down. This is the firs new 20mm star I've seen in over a year.

 

But back then you didn't get 20,000 lux at 1m out of anything you could carry.

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

how2
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arenat wrote:

Also did a quick test regarding with or without thermal grease , not a minor thing though.

327 L at start  going fast (immediately ) to 310  305 at 2 minutes

326 L at start slowly going to 319 at 2 minutes

 

Which was better with grease or without grease?

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Lovely flashlight design. I wouldn't mind one but it's around 4USD above my limit (defined by customs).

I would love to hear about it some more after you rebuild it properly. It has potential for good heatsinking i guess.

Coated lens?

 

Did i say that is looking very good?

 

kragmutt wrote:

They're gonna send you a green redcat with a black LED.

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Added to my Wishlist. Thanks for the review Don.

ForoLinternas.com

Don
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Budgeteer wrote:

Coated lens?

Only with my fingerprints Smile

Took it out to check and it seems to be plastic. Time to check if KD has one in this size. It appears to be 36.6mm in diameter and 1.5mm thick. KD don't have anything suitable and flashlightlens.com who do want $5.25 for one plus probably twice that in shipping. Not worth it for a $30 light.

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

Don
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I pulled the screws and there is definitely heatsink compound under the star - it is now all over my fingers. And I forgot to mention - it has a forward clickie which doesn't make sense to me in a multimode light, but it has one anyway...

Some folks will love this, some, like me, would prefer a reverse clicky.

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

arenat
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how2]</p><p>[quote=arenat wrote:

 

Which was better with grease or without grease?

Obviously it wasn't obvious as I thought ,  sorry how2

Better with compound since his function is fill the small, very small only , air gaps due imperfections , scratches and such between the surfaces of the star and the pill...with a very good work there can be achieved a thermal resistance of 1 C/W , that mean in a 5W powered emitter 5 C difference between the star and the pill , a lousy job as with that Chinese or not glue could result in a thermal resistance of 2 or more C/W with the result of the junction of the mentioned emitter working at more temperature than necessary.Polished metal with metal ( screws the best) and a tiny layer of grease is the way.

arenat
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Don wrote:

Budgeteer wrote:

Coated lens?

Only with my fingerprints Smile

Took it out to check and it seems to be plastic. Time to check if KD has one in this size. It appears to be 36.6mm in diameter and 1.5mm thick. KD don't have anything suitable and flashlightlens.com who do want $5.25 for one plus probably twice that in shipping. Not worth it for a $30 light.

 

Ok, that plastic lens led me out until other torch show up,too bad the lens are only available  at that paypal'  hater guy, his shipping cost are not outrageously expensive by American standards if you order more than one lens but he want CC pay, no thanks

Also his contact information is a kind of 'watch out ! we want your money not your problems , check the info provided you lazy idiot !

Piers
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They have 36.7mm x 1.5mm plane glass lenses at DX, you do have to buy 10 though it seems - $3.45 for 10. http://www.dealextreme.com/p/glass-lens-for-flashlights-10-pack-36-7mm-x...
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Great and informative work as usual, Don! (May I dare add that your reviews were the main reason for me to come back to this place again and again before I finally signed up)

I have some of these DX 10644-lenses left as I bought the 10-pack needing only 1 because it is my belief that no flashlight should be left with a plastic lens. That said, I would happily send you a couple, just PM me!

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Huny74 wrote:

Great and informative work as usual, Don! (May I dare add that your reviews were the main reason for me to come back to this place again and again before I finally signed up)

100%, +1 on that.

Don
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Thanks guys!

Nice to know some folk like it. I'll get around to doing a proper review soon on this one. Seems to me it's a very good light.

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

fishinfool
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FlashPilot wrote:

Huny74 wrote:

Great and informative work as usual, Don! (May I dare add that your reviews were the main reason for me to come back to this place again and again before I finally signed up)

100%, +1 on that.

Me too!

Don wrote:

"But as I said long ago, you are more likely to be killed by a dead fish dropped by a seagull in the Sahara Desert than by a lithium ion

Batiste
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Don,puede con 2 16340?veo la cabeza con muelle de contacto,para 18650 no lo suelen llevar,4,2 o 8,4?gracias.  

Don
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No hablo español así que esto es de Google Translate. Espero que tenga sentido ...

Con dos barato (de marca WF basura) baterías CR123 (6V) es mucho menos brillante que con un 18650. También parece ser casi imposible cambiar los modosde 6V. Con dos RCR123 protegido, es tan brillante o tal vez un poco más brillante que con un 18650. Pero no hace una gran diferencia, pero me imagino que el calorva a ser peor y tiempo de ejecución más corto mucho.

 

Or in case Google Translate has done a bad job,

I don't speak Spanish so this is from Google Translate. I hope that it makes sense...

 

With two cheap (WF brand rubbish) CR123 batteries (6V) it is much less bright than with an 18650. It also seems to be nearly impossible to change modes with 6V. With two protected RCR123 it is as bright or maybe a little brighter than with an 18650. But it doesn't make a big difference but I imagine heat will be worse and runtime much shorter.

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

sb56637
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Huh, pretty impressive job there from Google Translate. Perfectly understandable translation in Spanish albeit a bit literal.

Budget Light Forum ...where Frugal meets with Flashlight!

Batiste
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Smile YES,Tiene sentido,very thanks Don.

jb1
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Hey Don,

I think I have the YJ J01 on order. Glad to see this review. I can't wait to get the flashlight in the upcoming month(s). LOL

Does this light use flat top or button top 18650s?

Don
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jb1 wrote:

Hey Don,

I think I have the YJ J01 on order. Glad to see this review. I can't wait to get the flashlight in the upcoming month(s). LOL

Does this light use flat top or button top 18650s?

Most of mine are button top but with springs at both ends it ought to work with both. I'll try a flat top now. 

Works fine with a flat top as well.

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

jb1
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Thank you for checking it out. Time to order some button tops.