Newlumen
Flashlight Enthusiast
Shrimp, rice and Olson. That's my dinner.. t27vn Olson and skylumen delta vn Olson.
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Triple mail call today.. I got my
imalent r90c
ROT66vn Samsung 4000k
manker pen light.. ( need a neck lanyard)
Thanks Vinh for the free pen light.. I measured rot66 Samsung 4000k @ 6000 lumen.. great output from 4000k and 90 cri.. I never knew it gonna be that high.
How do you like your R90C ?
How many cells does the ROT66 run on... 3 or 4?
twistedraven
Flashlight Enthusiast
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- Oct 22, 2014
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3 flat top unprotected 18650s.
I'm looking over pricing for the ROT66 and noticed that it's $100 with XPL HI, but $200 with the Samsung. Is Samsung worth paying an extra hundred bucks? Also noticed that the price drops to $78 for SST20 but I'm wondering if that might be a mistake.
OnlyownEnergizer250lumen
Enlightened
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Same questions here as wimmer
Newlumen
Flashlight Enthusiast
Get a xpl hi 5000k. More efficient.
Ok. I still haven't decided on whether to get the RTO66 or the MK34vn. It's a difficult choice for me.
I am sure many will prefer ROT66vn but I personally like MK34vn a tiny bit more. I do end up using the MK34vn a ton more because of it though. I am completely bias as I prefer VNX2/3 and I feel this driver is bullet proof and I am used to the UI. Should it ever break the light is easy to repair/upgrade. I also like triangular head that makes it easy to hold the light. I like it that its shorter as well. But the ROT66vn has the cool/Gimmicky AUX LEDs and its 1/2 the price. Cant argue with that!
SST20 is much cheaper because I can get it form the factory that way. Samsung are installed by me. I would recommend the SST20 4000K 95 CRI for you if you like neutral/warm. If you want cool white then wait for White1/2.
hjdca
Newly Enlightened
I have the prototype ROT66vn with the SST20 from the Thanksgiving sale. It is a great way to go ! Lots of lumens with high CRI. I like the way the 9 LEDs are evenly spaced rather than 3 sets of triples (ie. 3 optics) on the MK34vn -- which seems like a compromise to use off-the-shelf optics and triple MCPCBs. I would think the ROT66vn evenly spaced LED layout would give a more perfectly round hot spot and better heat dissipation than the MK34vn, but, I do not really know.
So far, the heat dissipation on the ROT66vn is surprisingly good. The head really cools off quickly when you turn it off.
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If you compare performance numbers of both are really close. If they were measure back to back I think the difference would be even closer. ROT66vn VS MK34vn = 7000L VS 7400 & 60Kcd VS 53Kcd.
UI and form factor and PRICEis the biggest deciding factor here.
Vinh, thanks for the help! The way a light feels in hand is very important to me and having one of your drivers is also a big plus so I'll go with the MK34vn.
I requested XPL HI 4500K 
You probably don't have that but it never hurts to ask!
You probably don't have that but it never hurts to ask!
I requested XPL HI 4500K
You probably don't have that but it never hurts to ask!
I can mix XHP HI 4000K and 5000K if you want. They blend perfectly.
That's awesome. Yes please do that! Thanks a bunch!!!
twistedraven
Flashlight Enthusiast
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One thing to consider with the factory driver vs vinh's driver is regulation. I'm not sure is VNX has flat regulation in lower ouptuts or not. The fireflies driver uses 13 regulation chips on lower outputs (flat regulation on outputs up to 1400 lumens on sst20 version and higher on xpl hi version), and fet (direct drive) for higher outputs.
I've had both the lh351d and sst20 versions of the rot66. For less than half the cost, I'd definitely get the sst20. SST20 outperforms the lh351d in color rendering, and it throws better with a more defined hotspot. lh351d is just a wall of light. lh351d does make for a little more output on turbo though.
Vinh also has small hands, so keep that in mind. I have normal-slightly larger than normal sized hands, and I think the ROT66 feels tiny.
Having said all that though, the responsiveness of VNX and its many customizable mode settings are also really good.
I've had both the lh351d and sst20 versions of the rot66. For less than half the cost, I'd definitely get the sst20. SST20 outperforms the lh351d in color rendering, and it throws better with a more defined hotspot. lh351d is just a wall of light. lh351d does make for a little more output on turbo though.
Vinh also has small hands, so keep that in mind. I have normal-slightly larger than normal sized hands, and I think the ROT66 feels tiny.
Having said all that though, the responsiveness of VNX and its many customizable mode settings are also really good.
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MAD777
Flashlight Enthusiast
Steve, you'll love that MK34vn. It's as much a piece of art as it is a flashlight. And, it feels great in the hand. It makes a smooth wall of light, I think no matter which LED. Vinh's UI is the icing on the cake, because Manker's is confusing.
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