My UltraFire RL-2088 from Manafont has arrived.
Here are some preliminary impressions of this "poor man JETBeam RRT-3" :) Very nicely made flashlight, great type-III coating, beefy and build like a tank. It feels great in the hand, but also it is pretty heavy (640 g with the batteries). Now some driving impressions. I compare it with the UltraFire WF-500 SSC P7 (my modification with the KD 3 mode super driver and UCL AR coated lens). Of course, RL-2088 have ordinary uncoated lens, although in description it says opposite.
The current draw at the tailcap is 1.35 A on high, and 0.3 A on low mode. I also measured the current on the led terminal, and SST-50 is driven at 3.5 A on high, and 0.7 A on low. I was slightly disappointed, because SST-50 should be driven at 5 A to achieve it's full potential. However, after comparing RL-2088 and WF-500 outdoor, is is obvious that 2088 is more powerful. Not much, but it is visible.
Although in a ceiling bounce test two lights perform almost indentical, it should be noted that SMO reflector always gives lower readings in ceiling bounce test compared to OP reflector. On the other hand, WF-500 reflector is also bigger (52 mm x 30 mm), and RL-2088 SMO reflector is slightly smaller in diameter (48 mm x 29 mm).
Compared to my Fenix TK15, which is rated at 337 lumens (ANSI/NEMA FL1 standard- OTF lumens), I would say that RL-2088 gives some 650-700 OTF lumens. But thanks to SMO reflector, the throw is some 14000 lux at 1 m, compared to WF-500 9000 lux at 1 m. Also, the spill readings at 75 cm from the hotspot are intersting: 47 lux for RL-2088, and 39 lux for WF-500 P7.
Some temperature readings: starting temperarure 27 degrees C, (ceiling bounce 33.3 lux), after 10 min. 44.2 C, after 15 min. 47.6 C, after 20 min. 51.4 C (ceiling bounce 30.1 lux)
I like the tint of the SST-50, it is slightly to the neutral white.
Now i have a few options. I will try an XM-L with the original driver (XM-L driven at 3.5 A should be pretty bright). Then I'll try DX SST-50 and SST-90 drivers, and maybe I'll ever put SST-90 inside to see how it's look like, And there is also 50 mm AR coated lens at KD, but I have to grind it down to 48 mm.
More images with the inside components to follow. The beamshot is about 2 m from the wall, and the tint is not so green in the real life.