Convoy C8 Finned Copper Pill Mod (Now with video (Post #68))

I thought it’d be here today, even though they said tomorrow. 2 Days is fairly typical. Also, it’s what they advertise. :wink:

Edit: And it’s here! :slight_smile: The crazy mailman left it in the box 267 yds down the driveway. Doggone his hide! But I have it in hand and it’s astonishing! The heft, unbelievable, fit and finish…top of the line Bucket Mod work! I have no real clue how he got the copper ring on the head of the light but it seems to be all one piece. Superb work!

Will be putting MattAus’s Hyperion firmware in it, plan on some 5.6A, we’ll see how that pans out, with an XM-L2 T6 3C or something, have to dig around and see what strikes my fancy in the box…would a domed U2 1A be too blue? It’d be potent though, and the blue/white tint is said to cut fog and rain best….hmmmmmm……

Thank You Buck! Another exquisite job, well done! Big Thumb’s Up!

Noooooo! It’s a sin to hide the beauty of a well machined part. Most good machinists like to show off their work, not hide it, but customers are less likely to notice (and appreciate) a job well done. On the other hand, a crappy job won’t go unnoticed and should get another finish.

I like the size of the M1 and I’m trying to figure out how to put my fins on it. The screw in pill is nice but the threads are too sloppy.

Yeah, most lights seem to have rather sloppy threads. I'm sure that is an engineering decision to make sure they all fit despite machine setup, tooling wear etc...

It looks like the M1 is pretty well finned already. What do you have in mind for it?

Cut the head at the halfway point in the threads and drill out the center of the pill (and cut it in half as well)just using the threads to reattach the two head halves with a set of copper fins in between. The pill and threads are then no longer an obstacle to heat transfer as they now just sandwich a copper pill/fin combo. I’m thinking of using progressively thinner copper discs to transition from the thick stock fins to thinner ones I’ve done before. My bar napkin stack is growing and my imagination is ahead of my time but whenever I see truly inspiring work I get inspired myself. One idea involves several of us ganging up on one poor Maglight but some of the parts have yet to be created by others (they don’t know it yet).

Edit , did I mention the stock M1 reflector fits over an MT-G2?

That seems like a ton of work. Let me know if there is something you need made. I may have even recovered enough from the frustration of finning Dale's pill to do some more.

The simplest thing would be a better fitting pill made of copper but I so like the exposed copper fins so I suppose the ideal would be to have the back half of the head be all copper with fins clear back to the collar. Threaded outside at the front to receive the remainder of the head and inside at the back to go on the battery tube. Rather than have you cut the fins, just machine the copper barrel ~1 mm smaller in diameter than stock(27.5 rather than 28.6) to allow for the wire fin spacers I use. I’m going out for coffee now and will post a sketch in a bit.

The threads stop ~20 mm up inside the head so to keep some thread the existing fins and last spacer would stay but the solid part at the end becomes copper. Pairs of narrow guage fins tapering back to a final bevel/stop.

It would be nice to have the major spacers parted from 1” copper tubing to match the existing length and diameter of the originals and I would use small guage wire for the minor spaces between the copper fins. Then I would just have to accomplish the soldering of the fins and shaping them to match the rest of the head.

As you say this would be a lot of work to do entirely on my own and add several more solder interfaces between the mcpcb and the fins. And the threads would still be loose. But it could still be done so if you are disinclined to explore further I would do it anyway.

Here are two videos of me machining this light.

Thanks Buck, really like seeing how it all comes together! :slight_smile:

I don’t see a video link in either post. :_(

Thank you QuickDraw McGraw. :bigsmile: