New Convoy C8 – Clearly better

1530 posts / 0 new
Last post
renton83
renton83's picture
Offline
Last seen: 4 months 4 weeks ago
Joined: 12/22/2017 - 22:02
Posts: 88
Location: vancouver, canada

I was a bit concerned after reading about this light that the beam might be too focused for my needs but it seems the great thing about the C8 is easy of modifying. I’m quite good with soldering so I can always order different emmiters to try Big Smile I am surpised the board is not screwed down, I guess the reflector applies downwards pressure?

DB Custom
DB Custom's picture
Offline
Last seen: 12 min 38 sec ago
Joined: 01/13/2013 - 22:28
Posts: 20718
Location: Heart of Texas

The board is screwed down, most of the C8’s I’ve seen have a head on the screw that compresses the MCPCB. If not, replace the screws with ones that do. Or use Arctic Alumina Thermal Adhesive underneath the MCPCB. The lens itself would still need to be glued into the bezel without a reflector to hold it.

Jerommel
Jerommel's picture
Offline
Last seen: 1 year 2 months ago
Joined: 01/04/2014 - 13:18
Posts: 6380
Location: the Hague, Netherlands

JasonWW wrote:
Jerommel wrote:
Convoy C8 is supposed to have screws that hold the LED board.

The screws you see down there are for anti-rotation. They are not for downward pressure.

I disagre.
They push down the board on the shelf, it can run without reflector without cooling problems.
Well, mine can anyway.
They’re screwed tight.
JasonWW
JasonWW's picture
Offline
Last seen: 2 hours 5 min ago
Joined: 10/22/2016 - 11:41
Posts: 12836
Location: Houston Texas

Screws meant to clamp down on metal look like this. These are pan head.

The screws used in the C8 have a tapered head (countersunk head) that will split and distort the mcpcb if tightened too much. So even though the screws can provide a certain amount of clamping force, they are not meant to do that. It is just a side effect.

If I were going to not use the reflector, I would swap to some proper pan head screws that were longer than stock to provide a good clamping force without stripping the threads or distorting the mcpcb.

I guess I can be a bit too technical or precise about things. Sorry.

Texas Ace Lumen Tube and JoshK Sphere calibrated with Maukka lights

Click this to go to signature links. I'm still around, just not reading many new threads.

renton83
renton83's picture
Offline
Last seen: 4 months 4 weeks ago
Joined: 12/22/2017 - 22:02
Posts: 88
Location: vancouver, canada

Switching screws shouldn’t be too difficult. I don’t think I would use thermal epoxy in case I ever need to swap the emitter. I was wondering is the pill removable in this light? If it is would it not be simple to have different pills with LED and driver mounted and just swap them in and out?

JasonWW
JasonWW's picture
Offline
Last seen: 2 hours 5 min ago
Joined: 10/22/2016 - 11:41
Posts: 12836
Location: Houston Texas

renton83 wrote:
Switching screws shouldn’t be too difficult. I don’t think I would use thermal epoxy in case I ever need to swap the emitter. I was wondering is the pill removable in this light? If it is would it not be simple to have different pills with LED and driver mounted and just swap them in and out?

Only the old style C8 use pills. The newer C8 have integrated shelf.

Texas Ace Lumen Tube and JoshK Sphere calibrated with Maukka lights

Click this to go to signature links. I'm still around, just not reading many new threads.

Jerommel
Jerommel's picture
Offline
Last seen: 1 year 2 months ago
Joined: 01/04/2014 - 13:18
Posts: 6380
Location: the Hague, Netherlands

JasonWW wrote:
Screws meant to clamp down on metal look like this. These are pan head.

The screws used in the C8 have a tapered head (countersunk head) that will split and distort the mcpcb if tightened too much. So even though the screws can provide a certain amount of clamping force, they are not meant to do that. It is just a side effect.

It’s not “just a side effect”, it’s what they do, even when they have tapered heads.
Quote:

If I were going to not use the reflector, I would swap to some proper pan head screws that were longer than stock to provide a good clamping force without stripping the threads or distorting the mcpcb.

All they have to do is squish the thermal greaseinto a very thin layer.
Quote:

I guess I can be a bit too technical or precise about things. Sorry.


Well, technically you’re right, but practically it works well with tapered heads also, but it’s not ideal for clamping down the board on the shelf.
But it doesn’t have to be ideal, it has to be good enough.
They probably use tapered heads to prevent the PCB from moving sideways when tightening the screws.\
It would probably be my choice too if i was the manufacturer.
And with copper and aluminium boards, the screw will dent the contact area with the PCB, not deform or bend the PCB.
Spud
Offline
Last seen: 11 hours 16 min ago
Joined: 02/03/2017 - 06:38
Posts: 78
Location: Around

does anyone other than Convoy sell the driver retaining rings, i contacted Simon and he said he would add to an order, but with no paypal and a foreign transaction fee plus i would like to purchase a few, i was just wondering.

thanks

DoNkEyConN
DoNkEyConN's picture
Offline
Last seen: 3 months 3 weeks ago
Joined: 09/28/2017 - 04:17
Posts: 409
Location: Brisvegas, Australia

simon sent me 10 for the price of shipping. it cost me $2.65. I didn’t have to pay foreign transaction fee

EDIT: there was a fee of 8 cents.

im not sure if you can get the retaining rings anywhere else but Simon is an awesome guy. he’s helped me out numerous times.

duvallite
Offline
Last seen: 5 months 1 day ago
Joined: 01/08/2016 - 00:09
Posts: 159
Location: Greater Puget Sound

Jerommel wrote:
DB Custom wrote:


All that fuss….
Maybe i’m a thicko, could be…
But i really like the Convoy LD25 driver.
https://www.aliexpress.com/store/product/Free-shipping-LD25-Flashlight-c...
It’s a 3 mode (plus double click for strobe) FET CC driver without PWM for the low and medium modes.
It fits easily and works like a charm.
Should work longer on full output with a XP-L HI because of the lower voltage drop (compared to 7135 drivers).
I might want to try this sometime. Would using this board lower the maximum output? Any downsides or concerns to be aware of?
komeko
komeko's picture
Offline
Last seen: 5 months 1 day ago
Joined: 12/21/2017 - 14:26
Posts: 394
Location: Poland

C8 with the XP-L HI U6-3A 5000K diode has recently reached me. I checked how it is really and it’s perfect. Score 5079K. Current measurement in three light modes 0.23A / 1.45A / 2.89A
2381 lux with 5 meters

Click on:        ANSI WHITE

Click on:        MY COLLECTION

Click on:        Q8, D4, D4S, D18, K1, FW3A, SDmini, Mini AAA, TIP, M43, H1, H03, TC20, TN40S, TN42, V6, H600Fw, SC600w, SC64w

DB Custom
DB Custom's picture
Offline
Last seen: 12 min 38 sec ago
Joined: 01/13/2013 - 22:28
Posts: 20718
Location: Heart of Texas

Nice verification komeko, love that chart and how it clearly shows what the emitter is producing.

Wish I knew how to purchase emitters with a specific x/y illuminance to get pure white.

komeko
komeko's picture
Offline
Last seen: 5 months 1 day ago
Joined: 12/21/2017 - 14:26
Posts: 394
Location: Poland

Pure white is a strong relative term. A lot depends on the lighting that surrounds us. For me, the range I like is 4000-7000K, but the most is 5000K. At night, 4000K works better with street lighting or fog. On a cloudy day, I prefer 6500K etc.

The graph helps in determining whether there are any additional shifts towards a certain color. To calculate the temperature of light on the basis of x / y, I use such a simple formula Wink

(449*((X-0,332)/(0,1858-Y))^3+3525*((X-0,332)/(0,1858-Y))^2+6823,3*((X-0,332)/(0,1858-Y))+5520,33)=….K

Click on:        ANSI WHITE

Click on:        MY COLLECTION

Click on:        Q8, D4, D4S, D18, K1, FW3A, SDmini, Mini AAA, TIP, M43, H1, H03, TC20, TN40S, TN42, V6, H600Fw, SC600w, SC64w

DB Custom
DB Custom's picture
Offline
Last seen: 12 min 38 sec ago
Joined: 01/13/2013 - 22:28
Posts: 20718
Location: Heart of Texas

Yeah, ok, simple formula’s like that one always elude me. Wink

I like 5200K, if I can find it. But of course we use what is available most of the time.

komeko
komeko's picture
Offline
Last seen: 5 months 1 day ago
Joined: 12/21/2017 - 14:26
Posts: 394
Location: Poland

This is what the light from the cheap Warsun zoom on XML T6 looks like. Bleeee awfully blue, useless to me. Well, not mine Big Smile

Click on:        ANSI WHITE

Click on:        MY COLLECTION

Click on:        Q8, D4, D4S, D18, K1, FW3A, SDmini, Mini AAA, TIP, M43, H1, H03, TC20, TN40S, TN42, V6, H600Fw, SC600w, SC64w

DB Custom
DB Custom's picture
Offline
Last seen: 12 min 38 sec ago
Joined: 01/13/2013 - 22:28
Posts: 20718
Location: Heart of Texas

Yeah, a lot of the cheap lights come with the blue emitters. That’s why it’s great to get such a good tint in the Convoy C8, nice price and nice output, win win . Big Smile

komeko
komeko's picture
Offline
Last seen: 5 months 1 day ago
Joined: 12/21/2017 - 14:26
Posts: 394
Location: Poland

That’s right, convoy is a great flashlight … I just do not like the rear switch Sad

Click on:        ANSI WHITE

Click on:        MY COLLECTION

Click on:        Q8, D4, D4S, D18, K1, FW3A, SDmini, Mini AAA, TIP, M43, H1, H03, TC20, TN40S, TN42, V6, H600Fw, SC600w, SC64w

polarweis
polarweis's picture
Offline
Last seen: 2 months 1 week ago
Joined: 05/31/2017 - 17:05
Posts: 569

Convoy is gone use a new kind of clear ano right?(clear l6 giveaway)
Is the c8 gone get this new ano to. I got a clear c8 right now but it looks kinda cheap imo.

"It wouldn’t be so bright if there wasn’t a shadow every once in a while." - Jason Mraz

WalkIntoTheLight
Offline
Last seen: 5 months 1 week ago
Joined: 12/05/2015 - 10:26
Posts: 2231
Location: Canada

I prefer the 3D tint that a lot of BLF lights use, rather than the the 3A tint that Convoy uses. The 3A is okay, but it looks a little harsher than the 3D, to me.

duvallite
Offline
Last seen: 5 months 1 day ago
Joined: 01/08/2016 - 00:09
Posts: 159
Location: Greater Puget Sound

polarweis wrote:
Convoy is gone use a new kind of clear ano right?(clear l6 giveaway)
Is the c8 gone get this new ano to. I got a clear c8 right now but it looks kinda cheap imo.
I agree, on mine the clear anodizing looks kind of cheap to me too, but I really like the light overall, especially the programming and the 3A tint. I actually prefer the anodizing that’s on both of my XinTD V5 lights. These are just super quality lights. They have a 3C tint, which is really nice too, a favorite of mine. I do wish that they had the same programming as the Convoy so I could use half-presses to change output. Is this something that could easily be done, and if so, how?
Spud
Offline
Last seen: 11 hours 16 min ago
Joined: 02/03/2017 - 06:38
Posts: 78
Location: Around

are you sure its the clear C8, it could be the grey option, the grey is kinda subdue, the clears is a vibrant bright aluminium shine to it.

renton83
renton83's picture
Offline
Last seen: 4 months 4 weeks ago
Joined: 12/22/2017 - 22:02
Posts: 88
Location: vancouver, canada

What was average shipping time to North America for you guys?

d_t_a
Offline
Last seen: 10 hours 53 min ago
Joined: 08/04/2017 - 23:58
Posts: 2471
Location: Manila, Philippines
Jerommel wrote:
Maybe i’m a thicko, could be… But i really like the Convoy LD25 driver. https://www.aliexpress.com/store/product/Free-shipping-LD25-Flashlight-c... It’s a 3 mode (plus double click for strobe) FET CC driver without PWM for the low and medium modes. It fits easily and works like a charm. Should work longer on full output with a XP-L HI because of the lower voltage drop (compared to 7135 drivers).

That sounds like the driver used in the Convoy L2 (3A, 900mA, 80mA; with half-double-press for strobe).
I’m not sure if the Convoy L2 at low modes has PWM or not though.

DoubleA
DoubleA's picture
Offline
Last seen: 2 years 7 months ago
Joined: 07/04/2017 - 01:55
Posts: 401
Location: Dark side of the Sun

can you fit S2+ body into C8 head?

and on the first day he said "Let there be light"...

JasonWW
JasonWW's picture
Offline
Last seen: 2 hours 5 min ago
Joined: 10/22/2016 - 11:41
Posts: 12836
Location: Houston Texas

DoubleA wrote:
can you fit S2+ body into C8 head?

I tried with my red S2+. It has smaller diameter threads than the C8 so they don’t engage at all. They also have a different thread pitch.

Texas Ace Lumen Tube and JoshK Sphere calibrated with Maukka lights

Click this to go to signature links. I'm still around, just not reading many new threads.

DB Custom
DB Custom's picture
Offline
Last seen: 12 min 38 sec ago
Joined: 01/13/2013 - 22:28
Posts: 20718
Location: Heart of Texas

Convoy C8 clear anodized reigns supreme! Big Smile

A friend asked me to build a host C8 in clear ano for him, at first he wanted a triple, mega power, but after some talking to him he decided on an XHP-70.2. So today I built his light.

I had some issues with the 70.2’s I had on hand, mostly they were previously used and removed for whatever reason, but the main two I tried only had two working dies. One produced dim light, the other a lot of light but still only two dies. So I removed a sliced and diced 70.2 from a Solarforce light I have that is never used, the orange peel reflector is heavy enough that it fares better with a 70 anyway. And WOW!

I built a Zener modified FET driver with 6 modes, Vishay SIR800DP MOSFET and 20 ga leads. SinkPAD board, stacked a couple of copper discs on the spring pad to clear the retaining ring and the two Aspire 18350 cells fit right in, no other modification necessary aside from opening up the reflector to clear the larger 70.2 substrate. Would you believe it does 11.82A at the tail and 6676 lumens out the front? Crazy C8! My friend is just gonna fall out! lol

JasonWW
JasonWW's picture
Offline
Last seen: 2 hours 5 min ago
Joined: 10/22/2016 - 11:41
Posts: 12836
Location: Houston Texas

It is hard to believe those 18350s can pull that many amps. I have a “close” setup, but using a pair of 26350 and a xhp70 and can only get maybe 8 amps from them.

I was thinking it’s the limit of the purple batteries. Maybe a 70.2 will pull more power from them?

I’m waiting for Lexels boost driver. It should do at least 6A at 6v so you can run a 70.2 with a single 18650 or 26650 and gave consistent output.

Texas Ace Lumen Tube and JoshK Sphere calibrated with Maukka lights

Click this to go to signature links. I'm still around, just not reading many new threads.

djozz
djozz's picture
Offline
Last seen: 2 hours 8 min ago
Joined: 09/07/2012 - 17:04
Posts: 17857
Location: Amsterdam

So 80W in a Convoy C8, impressive! That must be close to the heat build-up speed in a D4. If only you could have Toykeepers D4-type thermal management in a clicky driver, that would be very useful in this light.

DB Custom
DB Custom's picture
Offline
Last seen: 12 min 38 sec ago
Joined: 01/13/2013 - 22:28
Posts: 20718
Location: Heart of Texas

I know, right? Heck, I about fell out when I saw the meter! Really close to the output of a fully modded L6, from a C8! Of course, run time will be counted in seconds instead of minutes, but my buddy likes the wow factor so it’s right down his alley… lol

ZozzV6
ZozzV6's picture
Offline
Last seen: 5 days 17 hours ago
Joined: 03/24/2016 - 12:19
Posts: 2425
Location: Near to my soldering iron.

JasonWW wrote:
It is hard to believe those 18350s can pull that many amps. I have a “close” setup, but using a pair of 26350 and a xhp70 and can only get maybe 8 amps from them.

Those purple 26350s are not very high drain cells but the Aspire 18350s are the best in their size.

Pages