If we want high numbers on a buy it has to be at the cheaper end of the market like the Courui D01. I am sure the Convoy L2 is excellent but you will lose at least 100 buyers because of the extra cash. If you look at the history of group buys the budget ones often massively outsell the mid range models. Personally I buy anything that you guys organize that is under $10, almost everything that is under $20 dollars. Once it gets past $25 I start to lose interest rapidly. I do after all have plenty of quality lights already. I doubt I would ever spend over $30 and at that end of the market its retail main branded equivalent would have to be selling for close to $100.
Well, there is already a “C8” and a “mini C8” and krono is currently running the X6-SE v2 group buy, where they are introducing a “mini X6” version, and calling it a K6. So, in the same vein, it might be cool to do a Courui D01 (fully modded) and a “mini D01” that is identical in design, but runs on 3P 14500 or 10440 cells, and is that much smaller in size (including the reflector). I know to some people it might sound lame to run 3P 10440, but in order to make the light scale to size, you need shorter cells, and even a single 18500 is less powerful than 3P 10440 high current cells such as Efest Purple. If we make it 3P 14500, then people could use a single 26500 in it if they wanted to.
I don’t want any series-cell lights for a couple reasons. One: series is more dangerous than parallel. Perfect, or at least near perfect cell matching is a must. Two: Buck drivers are less efficient than linear drivers. Three: Buck drivers usually are not capable of max amps, unless you get a much larger and/or more expensive buck driver.
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YES! - Two is always better than one, and then we can pick and choose:-)
Thank you, djozz!
-Chuck
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Jason,
I see no harm in Wanting and Building Both, as you know that is where the road will lead all true Flashaholics 
Thanks!
-Chuck
David, the C8, mini C8 and X6 are not the compact lightweight thrower I was describing, the idea is a full 50-60mm reflector with a compact body. Many don't like that shape, but that's what a compact lightweight reflector thrower is. That said, within the requirements I'm sure it can be made look cool.
Sorry, djozz, I didn’t mean we should make any of those. I was saying that those are current examples of “large and small” flashlight pairs, and that if we did the same thing with a Courui D01 (or any other large thrower) by making a “mini D01” version, that would be cool with me. I don’t think a Huge reflector on small tube would look good or be practical. But maybe, if it had a 26650 sized tube, it wouldn’t look so disproportionate.
What about even a 32650 sized tube that may could also accept a carrier with three 14500’s? That may even make it appear more proportional.
Whereas I don’t, and one of the reasons this appeals is the potential for a quality light but at a fraction of the price. It’s that bang for buck ideal that appeals to me - knowing I’m getting something that I’d pay a fortune for elsewhere. Not just something that fits a niche at a good price.
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+1
What I am really looking for, is a modded Courui D01, for maybe $60 - It will take a lot to bring it up to our standards - But something that is actually “worth” $150, if you tried to buy it even in a Group Buy.
http://www.gearbest.com/led-flashlights/pp_85126.html
That’s a pretty tall order and it’s not going to be done for $30.
On the other hand, a $30 “Mini-Thrower” would be something that I would buy too. - Single cell, maybe a 50mm head?
Come on , Guys… I have no modding skills, and every time I look at that link that I posted, I get antsy. - But I know that the stock version could never please me.
Who is willing to step up to the plate and do the BLF SE Group Buy for us?
Thank you,
-Chuck
Chuck and I are in total agreement. That’s the idea behind this thread. Any other group buy ideas are great ideas also and we would participate in those group buys also.
why don’t you learn? it’s not that hard to get started :bigsmile:
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Good question - Thank for it…
I have taken lights apart to the point where I could see the bare emitter (barely”-), the 7135’s on the driver, etc.
I can’t even Imagine working on anything that tiny - actually applying heat with a soldering iron.
I’m 66yrs old and I know that I really should at least try, or else, what is the point to continue living? - Right?
It’s just that my modding skills are really not the topic here - What we want as a Group is!
Let’s do a modded Courui D01:-)
Thank you,
-Chuck
I’m with Chuck on this one.
It has room to move and I may even try mod of the one I already have.
MontyP
I can’t wait you guy’s! :party: How are we going to want this Courui MODDED? 
Are we going to ask for a shouldered aluminum pill with a 32mm stepped and centered pocket (for a Noctigon 32mm XP-L mcpcb board and drilled and tapped so it can be screwed down) then pressed into the body for better thermal transfer, and the reflector bottom to be machined and cleared so as not to sit on the leads and short out? Putting the reflector on the board for possibly the most almost perfect focus? The driver pcb to be screwed to down to the body for better Earth contact? What about the driver? FETDD 6 mode or moppydrv? How about the battery spring pcb? Anodizing cleared where mounted and the Springs bypassed and the back of the pcb, resistance modded with heavy awg copper wire connecting the 3 springs and also resistance modding the traces, a lock out push button switch under the tail cap, for safety? Just asking cause that’s the way I would want to do it? :bigsmile: Or is that a bit much? :~
Point taken.
I know that you have modded more that one of these, and know the ropes.
So, even though your hot-rod might be prohibitively expensive, do you have any advice for us, in order to get a ‘good’ output without driving them to the Max?
I’m really serious about this.
I would want the cells to be in Series, and to provide a minimum of 250KCD, with FLAT regulation. -Do you think that this is possible for $60?
I do respect you, and greatly value your imput on this.
Thank you.
-Chuck
Don’t forget putting this reflector on it as part of the BLF SE.
86.2mm(D) x 84.7mm(H} SMO Aluminum Reflector for SST-90 / SBT-90 / SBT-70
- Suitable for SST-90 / SBT-90 / SBT-70
Material: Aluminum Textured / SMO Reflector
Dimension: 86.2mm (Dia.) x 84.7mm(H}
Emitter hole diameter: 19.6mm
Weight: 35g
Package Content: 1 x SMO Reflector
I fear that I will be dead and gone before we can ever get serious about this.
I won’t add anything more here, as you guys already know what I want.
Let’s get the ball rolling!
Even if is not Exactly what I want, WE are a Team, and I will go with what the majority says… As much as I hate too 
Thanks,
-Chuck
In order to use 3 batteries in series you will need a good battery carrier which is not going to be cheap. In my opinion you can keep parallel setting and still get 250 KCD. My modded courui throws 850 m easy. That was the only open space I could find so maybe it throws even farther. It pushes xm-l2 to 5A (Samsung 25R) and run times are excellent.
What You need to consider to make a budget thrower with courui is:
1. Customized bottom of reflector in order to sit on the MCPCB
2. Copper MCPCB
3. 18 or 20 AWG wires
4. Integrated pill or maybe even copper one instead of aluminuim one.
5. Braided springs
6. LD-2 or FET driver
7. Tailcap button
8. Emitter of your choice (dedomed)
I think kawiboy should just buy a hundred D01’s and mod them like he posted above, then sell them to us. That mod and spec list sounds perfect.
Theres lots of talk about the D01. I have an issue with this… The quality on this light is a gamble. I’ve recently bought 2 Couruis from Gearbest and I’m really not impressed by the quality. Very rough machining, the lights are dirty, and the one actually had the branding cleared out with a black pen - can you believe it! I’ll post photos if there’s interest. So, if its going to be the D01 somebody will have to make sure the quality control is up to scratch…