COURUI DO1 'Big Head' (Black/GRAY NOW AVAILABLE) $29.99 @ Gearbest ( use coupon: gbcourui) A long-throw modder's light!

I liked my first one so much, I immediately bought a second! The size and overall shape just fits the hand nicely, and with 3 18650’s the run time is superior with less sag when hot rodding. And, uh, well, they’re both hot rodded. :slight_smile:

The e-switch is great with a reversing UI in a FET driver. This lets you go directly to Turbo or moon, as you wish. Love that!

I’ve got one with an XM-L2 de-domed and working far better than my 2 HD2010’s (369.25Kcd with an UCLp lens), the other has an MT-G2 utilizing 6 Efest Purple 18350’s. I limited that one to 3000 lumens in the firmware as it was wanting to make over 4000 at 100% and making more heat than I wanted in this light. I wasn’t feeling up to making a copper heat sink for it, so I used an ounce of silver instead. Works all right, would have preferred the copper with more mass.

I highly recommend this light. These immediately became personal favorites. :bigsmile:

Argh!!! Trying to resist . . . must resist . . . c'mon self, you can do it! :)

-Garry

This is a better HD2010 with 7500mAh cell capacity (or more!) Resistance is Futile!

Think of the CHILDREN!!! :stuck_out_tongue: Ah, go ahead and buy one. I gave in, you should too! J)

WHY, WHY, I’m asking WHY You all are doing this to me??!!

I didn’t wanted to order more lights before EEX6 GB, but You did it to me, and had to order one of this J)

Hope it’s gona be another great light for mod :bigsmile:

FYI - I contacted vestureofblood about a copper pill - he has ordered a sample and will be looking into it :slight_smile:

Bucket is already making one as well, he’s had a Courui for a while now, since before he got onto the Damascus build for Matt.

Count me in! I’ll be very interested in a nice, thick copper pill for this!

Yeah, same thing I said above. I want one!

Bucket posted this thread 2 months ago…

Courui copper pill

I knew that I should have waited before clicking ‘buy’ for one of these lights from another vendor…….could have saved almost $10 !

Ho-hum

Yep, I bought one a day/or two ago, for $32.07, oh well, I didn’t pay 38.

Resistance is Futile! J) J) :expressionless:

Thanks for the copper pill link, DBCstm. Link now added in the op.

Thanks, just ordered one, my first modder methinks :~

Ordered

Just wanted to let you guys know what you can look for from mine- I’ll be designing new boards for mine to be a 3s buck driver using components from an HX-1175b. The driver/upper contact plate will be one board and then either mod the factory tail plate or make a new one for 3S. This will drive either a 3v or 6v emitter upwards of 8A via sense resistors and uses a surprisingly small number of components.

Change of plans, instead of stripping HX-1175b’s I’ll be designing a whole new driver based on the MAX16820 buck driver (an individual component). Spec’s are pretty awesome, 2Mhz switching, very high PWM in, should be pretty efficient especially when able to use a nice large board with large Cu pour for heat dissipation.

Will have to order one of these for modding this winter.

Any chance someone will do a write up on how to mod this light ?

i cannot decide whether to buy this courui big head or the UF-1405(please don’t say buy both). which one gives more throw after modded (lets say dedomed, and driven @ same current)? anyone here has both and can give some numbers for comparison?

This is the DO1 with black anodizing. The original was grey I believe.
Amazon is the only place I could find it in stock today.
DX had them 2 days ago, but today the listing is gone.

I do not know if it is different inside.
Some sites show 1000ma driver, one shows 1800, most show no info.
I ordered one anyway. For the price it’s likely to be a good buy.