Quad 24mm Copper TPAD DTP

ok got it, so what drive options on a 35mm Quad?

Cheers

Mark

This is our standard 32mm quad, so what drive options

parallel?

2s2p?

all in series?

which optics?

I think we all are looking to use CUTE-4 optics on a 35mm quad and most will probably use one of the many now available FET drivers for them and run them in parallel. I guess you could use the LD-2 also or just any other linear driver if you are not looking for max output.

Agree with pyro1son, that it is really a 20mm quad that would be more interesting. + we already have access to 20mm noctigon triple mcpcb’s.
It is the 20mm quad that is unavailable, but i guess one could maybe sand down a 24mm to 20mm but it is a hassle to do.

I use parallel as most of my quad builds are in the Eagle Eye X6 format, which is a single cell light. The 35mm head works great with the CUTE-4 and CUTE-3 optics from Ledil.

I think the nominal mcpcb size is 32mm in the ones I’ve been using, and even those have to be filed down a bit to make the 31.7mm inside diameter of the pill in that light. Of course, there are bigger lights and bigger options, I’ve got a 50mm triple optic that I’d like to use in a Convoy L2, not sure what would fit that.

I wonder if a triple MT-G2 board would be feasible? Or triple XHP-70? Probably with the 50mm optics, as these big boys would prefer larger individual TIR’s inside the optics. I’ve got a BTU Shocker running 3 of your 9V MT-G2 emitters at about 10,000 lumens, absolutely love this light! (triple reflector works perfectly with the big MT-G2’s)

Gotta be tough designing these as we all expect different things, use different lights, have different styles.

He if we can get triple XML/XHP50 on 20mm, we can do most things but optics define this

yes our quad is 32mm. triple MTG2, what optic would you use?

Triple xhp70 sounds possible, but need to lock an optic down

Cheers

Mark

20mm quad, parallel?

Yes parallel, i don’t think it exist any serial high amp capable driver for single cells, so i have only seen parallel use around here.

Maybe Dale can show an picture of the old limited run copper DTP 20mm mcpcb’s for reference.
I don’t even remember what they was called either, only that some russian guy showed up here and said he was doing a batch of them, and now they have been sold out for months and as far as i know there haven’t been any talk of them returning to market.

I can adapt, I’ll use whatever optics fit the board and shave the dome off of MT-G2’s so they’ll fit under the optic. :slight_smile: Obviously, gotta have copper under triple 6V emitters, I’d try pushing all the current possible, I run 12A+ to a single MT-G2 now…

yes I think I recall seeing them. I did not realise they were 20mm. I will review with our design team next week and advise

Cheers

Mark

ok will look at it next week and see what makes sense

Cheers

Mark

The russian guy is BLF-member Dsche, he's still around, and actually his 20mm copper parallel quad board was still available until not so long ago, I bought a few boards from him. Here are a few pictures (the cuts in the solder pads were my doing, making the leds individually adressable):

A picture from his thread ( https://budgetlightforum.com/t/-/22412 ) :

Thanks djozz for filling in the blanks :slight_smile:

Latest update

1. To Suit Quad lens round 24mm,

2. for 4 LEDs 3.5mm square,

3. MCPCB 20mm round (19,9mm ~ 20,1mm), 1.5mm thickness

4. Copper core with direct thermal path to the thermal pads of the LEDs,

5. LEDs to configure in parallel or 2 serial 2 parallel. 4 serial not

neccessary.

How does that look?

Cheers

Mark


Sounds perfect, thank you.

That would be great!

Sound brilliant

Sound good :slight_smile:

But what sounds even better is that you are responsive and trying to fill the last few holes & give us the tools we need, to get even more & easier performance in our future mods :slight_smile:

Not a problem, I want to make things people want, anything else does not make sense

Cheers

Make the traces as wide as possible. For some silly reason SinkPad made the xhp70 traces dinky. Check out those on any Noctogon. Only the copper necessary for trace separation is removed on their triples and the singles have nice wide traces.

Yes we use wide trace but also 3 oz thick for plenty of capacity

Cheers

Mark