MG P-Rocket w/R5 465* Lumens Available Soon!

I was in correspondence with Bryan over at Shiningbeam about my SST-50 P-Rocket. I learned that a P-Rocket with an R5 LED (465* Lumens) will be made available in the next 2 weeks.
It will sell in the low $40's which should be very attractive for an R5 light, especially with 465 lumens.
There are 2 prototypes, smooth and OP reflectors.

I have the EagleTac P20C2 MKll which is real compact, and puts out 380 lumens at the emitter (300 lumens OTF.)
465 lumens for the P-Rocket is pretty impressive.

I asked Bryan if I can post about the R5 P-Rocket being in production, and he said it was fine to do so.

Edit:
*Shingbeam/MG lumen ratings are at the emitter.

Re: MG P-Rocket w/R5 465 Lumens Available Soon!

I hope it has better regulation that the SST-50 P-Rocket (i.e. a bit more than 20-25 mins would be nice).

An hours regulation and I'm in.

Re: MG P-Rocket w/R5 465 Lumens Available Soon!

465 lumens will not happen. sorry.

Re: MG P-Rocket w/R5 465 Lumens Available Soon!

Was the Lumen output verified in regards to the SST-50 P-Rocket?
Supposedly 800 Lumens at the emitter (or 700, depending which version.)
Just curious if the specs are accurate.

Re: MG P-Rocket w/R5 465 Lumens Available Soon!

If the emitter is a Cree XP-G then 465 lumens is the best case scenario and thats at the emitter.

Re: MG P-Rocket w/R5 465 Lumens Available Soon!

mossyoak said:

If the emitter is a Cree XP-G then 465 lumens is the best case scenario and thats at the emitter.

Click to expand...

I'm pretty sure it's the Cree XP-G R5 emitter.

Re: MG P-Rocket w/R5 465 Lumens Available Soon!

According to JTR1962's testing
https://www.candlepowerforums.com/posts/3115908&postcount=354
1400 mA - 441 LED lumens >> ~352 OTF lumens
1500 mA - 460 LED lumens >> ~368 OTF lumens
1750 mA - 499 LED lumens >> ~399 OTF lumens
2000 mA - 526 LED lumens >> ~420 OTF lumens
2250 mA - 544 LED lumens >> ~435 OTF lumens
2500 mA - 546 LED lumens >> ~436 OTF lumens
2600 mA - 542 LED lumens >> ~433 OTF lumens

460 LED lumens can be achieved at a 1.5A drive level.

465 OTF is not going to happen. The LED tops out at 2.25 mA giving ~436 OTF lumens.

I am assuming 80% transmission through the optics.

-

EDIT
The XPG is a relatively floody LED. I would like to see it in the X-Thrower with the bigger reflector for throw and in the L-mini body (maybe with a reduced power input of 1A) for flood.

Re: MG P-Rocket w/R5 465 Lumens Available Soon!

Who said 465 OTF lumens? It's 465 emitter lumens and about 350 OTF lm. R5 does up to 490lm@1,5A so 465 is possible.

Re: MG P-Rocket w/R5 465 Lumens Available Soon!

I bet it uses the same 1400mA driver from shiningbeam.

Re: MG P-Rocket w/R5 465 Lumens Available Soon!

dhouseng said:

I bet it uses the same 1400mA driver from shiningbeam.

Click to expand...

And you win what's behind Door #1 lol!

I just spoke with Bryan, and received some updated information:

The R5 and the SST-50 versions of the P-Rocket are identical regarding the size. The differences will be >

1) the reflector design
2) the circuit board, which will be driven at 1.4A instead of 2.8A in the current SST-50 version

@ 1.5A, the output is roughly 493 lumens, so the 1.4A will be approx. 465 lumens at the emitter, which would be about 350 OTF lumens.

This is what he needs to do to the next L-Mini ! :naughty: :rock:

Re: MG P-Rocket w/R5 465 Lumens Available Soon!

biker1 said:

@ 1.5A, the output is roughly 493 lumens, so the 1.4A will be approx. 465 lumens at the emitter, which would be about 350 OTF lumens.

Click to expand...

Yeah great !...But for how long ?
First 30 seconds ?

Re: MG P-Rocket w/R5 465 Lumens Available Soon!

biker1 said:

And you win what's behind Door #1 lol!

I just spoke with Bryan, and received some updated information:

The R5 and the SST-50 versions of the P-Rocket are identical regarding the size. The differences will be >

1) the reflector design
2) the circuit board, which will be driven at 1.4A instead of 2.8A in the current SST-50 version

@ 1.5A, the output is roughly 493 lumens, so the 1.4A will be approx. 465 lumens at the emitter, which would be about 350 OTF lumens.

Click to expand...

I would bet that it will be closer 310 lumens OTF initially and down to 275ish within 30 seconds & 240ish after 3 minutes.

I'll try to find out.

I have the EagleTac P20C2 MKll which seems to sustain itself at high power with the XP-G R5 emitter, but that may be comparing apples to oranges.

Re: MG P-Rocket w/R5 465 Lumens Available Soon!

FroggyTaco said:

I would bet that it will be closer 310 lumens OTF initially and down to 275ish within 30 seconds & 240ish after 3 minutes.

Click to expand...

Not really if the heat-sinking is decent. I have a light that uses the same driver, it can keep a stable 1.35A current for 60 minutes, and slowly dropping to 1.20A in the next 30 minutes.

It is also the very same driver used in Anto's XP-G R5 drop-in. OTF readings can be found here:
https://www.candlepowerforums.com/posts/3268382&postcount=1

Yeah great !...But for how long ?
First 30 seconds ?

Click to expand...

Depending on battery, an hour ish.

http://budgetlightforum.cz.cc/node/289

Not really if the heat-sinking is decent. I have a light that uses the same driver, it can keep a stable 1.35A current for 60 minutes, and slowly dropping to 1.20A in the next 30 minutes.

Click to expand...

Bingo.

Spoke with Bryan via email, and this is what he said >

"The brightness of the flashlight depends on the driver and the Vf of the emitter. emitter with lower Vf usually is a bit brighter with most drivers.
At 1.4A, the P-rocket with XP-G should have 140+ minutes runtime on the the high mode."

biker1 said:

Spoke with Bryan via email, and this is what he said >

"The brightness of the flashlight depends on the driver and the Vf of the emitter. emitter with lower Vf usually is a bit brighter with most drivers.
At 1.4A, the P-rocket with XP-G should have 140+ minutes runtime on the the high mode."

Click to expand...

1.4A for 140mins = 3267mah cell? It looks like the light won't be perfectly regulated.. That is unless he meant 1hr 40mins in which case that works out pretty much perfectly for a 2400mah cell.

It definately looks like an interesting new light though.

Bryan mentioned in another thread that the P-Rocket is not perfectly regulated.
To make the light perfectly regulated would boost up the cost, and the light would then be out of the price range it is in now.
As per his post, he calls the P-Rocket a 'Budget' Light, but I would have to say that the the quality of the SST-50 P-Rocket is pretty high.
I guess it's a high quality light at a 'budget' price.

.4A for 140mins = 3267mah cell?

Click to expand...

It wont be regulated for those 140 mins, it will be regulated for around 60 mins then when input voltage = led vf it will go direct drive - so 140mins to 50% is probably correct. That's actually how I prefer a light as direct drive is much more efficient than fully regulated - regulated at the beginning of the run then direct drive is the best of both worlds.

That's me sold - I'm in for one when it becomes avail. It'll team up nicely with my SST-50 P-rocket on my bike