15W MIL SPEC Ostår junior

Hi Guys,


Just to share a build for a member here.


A 15W Ostår Junior with a Blue Shark in there.






Below are the specification. Thank for looking.


- Osram Ostar LEUWE3B QY bin (820 - 970 Lumens)
- MIL SPEC HA III host with fluted head
- Custom Ostar heat-sink
- Shark with Remora , 3 mode,Low (0.14A), Medium (0.34A), High (0.94A)
- Tri-bored host ( Fit FM 3 x 17670 battery holder )
- Modified FM 3 x 17670 premium holder
- UCL lens
- Metal Stippled reflector





Smaller than a P7 1D




Thanks for looking,

With regards,
Jo @ Britelumens

sweet... can you show a picture of the heatsink you mounted the ostar to?
thanks

that host looks nice Jo! still waiting.......

very nice mod!!!

could perhaps post some outdoor beamshots comparing with an mag ssc p7???

toby_pra said:

very nice mod!!!

could perhaps post some outdoor beamshots comparing with an mag ssc p7???

Click to expand...

Hi toby_pra,

Does a indoor beamshot count?

Beam shot added in post #1

spc said:

sweet... can you show a picture of the heatsink you mounted the ostar to?
thanks

Click to expand...

Hi spc,


The heat-sink is similar to my P7 Mag D size heat-sink with it being a wided base for the Ostar and custom made to have a bigger mass.



With regards,
Jo @ Britelumens

p/s: Sorry for the late reply guys.

How long is this mag exactly???:naughty:

Ist it driven with 3*17670 or 3*Rcr123 as shown in the pics???

toby_pra said:

How long is this mag exactly???:naughty:

Ist it driven with 3*17670 or 3*Rcr123 as shown in the pics???

Click to expand...

Hi toby_pra,


3 x RCR123 is what is driving this little junior. Size comparison is on the 3 photo compared with my 1D.


With regards,
Jo @ Britelumens

Great looking light.
Just coz I'm being lazy,
What are the advantages of the Ostar say and MC-E or P7 pictured?

I asked because you posted above that this light is

"- Modified FM 3 x 17670 premium holder"???

Could you tell me how ling this light in cm is please?

Where can these emitters be ordered from? (super nice light by the way).

toby_pra said:

Could you tell me how ling this light in cm is please?

Click to expand...

Hi Toby_pra,

The length of this build is 18 cm :thumbsup:


With regards,
Jo @ Britelumens

Cool...... but your over driving the R123's. You should be pulling well over 2 amps from them poor batteries in High.

Mac

Hi Mac,


At high, the shark board is pulling about 2.04A ~ 2.08A from these AW R123 ( 2% ~ 4% higher than 2C ). It should not be too bad although according to AW's specs, 2C is the max on these cells.




With regards,
Jo @ Britelumens

cmacclel said:

Cool...... but your over driving the R123's. You should be pulling well over 2 amps from them poor batteries in High.

Mac

Click to expand...

There 750ma (more like 650ma) cells so 2c is 1.5amps. How do you figure 2-4% higher than 2c? It's more like 33% Also whats the current with half charged cells? The lower the voltage the higher the current draw.

Mac

cmacclel said:

There 750ma (more like 650ma) cells so 2c is 1.5amps. How do you figure 2-4% higher than 2c? It's more like 33% Also whats the current with half charged cells? The lower the voltage the higher the current draw.

Mac

Click to expand...

Just throw some of AW's IMR16340 cells in there it'll be fine.

But if you keep using those RCR123s you're going to have a problem.

Hi shomie911,

Thanks for sharing.

Yes, it is no good for the R123 in continuous high mode in long run just like Mac pointed out. And thanks to AW for making the IMR16340 cells available to minimize design constraint like this set up.


p/s: Mac, thanks for pointing out the calculation mistake.


With regards,
Jo @ Britelumens

shomie911 said:

Just throw some of AW's IMR16340 cells in there it'll be fine.

But if you keep using those RCR123s you're going to have a problem.

Click to expand...