FandyFire Rook Mod. 3AA NiMH in series? Yes, it's done, but I'm on the second one now!

I think it is a great idea to post some music to play at the beginning of a new mod.

I never heard of the group Shearwater, they are an indie group (Independent label) and they are pretty good. Here is a YouTube link of a playlist of some of their stuff.

As for OL’s mod, everytime I re-check how things are going, I will start the playlist at a new spot and read on!

Sometimes you can find the most interesting stuff when you’re not looking for it.

As far as output, it’s hard to say, as when I got it, I could not get it to work. I decided to go ahead and mod it. From what I have read, the output with NiMH was not great, but it looks like on NiMH, the stock driver only gives out about 2 amps to the LED. If the stock driver (when checked out), looks like it can be modified, then it will be used, but if not, then a NANJG 8x7135 with a DrJones reprogram, using the electronic switch would be a likely candidate. As far as a lock out, I have thought about it and it can be done fairly simply. If the ground for the contact plate is transferred to the tail cap, then the tail cap could be the lockout. The threads on the tail end are anodized, so it could work as a lockout. When the tail cap is turned in, the lip can be cleaned of ano, along with the edge of the body, so they make contact and just a little turn would break contact and be the lockout. It’s an option that I need to explore.

Your head starts spinning, think of how I feel, LOL.

I have not forgotten about this mod. DrJones is sending me drivers with his program, so I can get this mod going again. I got some of the double sided copper clad board from Radio Shack and a pack of those round boards, to make/replace the contact plate/driver that was in the head.

Good luck with the mod. I hope it works out for you. I have only used mine with 14500’s and I think it rocks. It’s very bright, nice flood not too ringy decent throw as well. It’s one of my most favorite lights. I use it fairly often in fact I don’t even know if it does have parasitic drain. I haven’t noticed if it does. I suppose if I put it away for a week or two with the batteries in it I might have a problem but I don’t do that with any of my lights.

Well anyway, good luck and have fun.

Looks like another very interesting OL build.

Just making sure you know you need to hold the power button down for two seconds to turn the stock rook on.

I had to search before I figured it out too.

Oops! Too late now, though I expect anyone sending him a light knows what’s in store for it.

It's DONE. See all the photos in the OP.

Have fun and look for the giveaway now.

Nothing has changed. More confused than ever. To top it off the thing (for want off a better word) works like a charm. Back to the Bex and another Nanna nap for me. Well done.

Congratulation for this impressive and useful mod, O-L, i really enjoyed the whole (photo) process!!!

Great mod, Justin! Just wondering : if the stock voltage input was 1.5~4.2V for 3xAA in parallel, then won’t 3xAA in series be 4.5v? :smiley:

Each

Nanjg drivers will work at 4.5v if need be, just alkaleaks won’t last too long I guess. Nice work o-l I like this a lot.

Beautiful work and a fairly simple solution to lockout parasitic drain. You da man!

+1

Nice mod, I dont know how I missed this one.

I added a video explaining Parallel to Series on this Rook mod. It's laughable, but maybe it will be useful to someone out there.

EDIT: "The Driver Contact Plate"

I stripped all components from that driver plate, so it was a bare contact plate. Since the plate is bare now, I can use a meter and see where the one area is, that makes the contact, from one side of the plate to the other side. I just metered the plate and there was one location, where it went through to the other side. Then I cut the plate, so that area was the positive contact.

Thanks Mr Lumens. I'm probably speaking for .1% off people on this forum. I think that just leaves me? I know about parallel and series no problem. Its just the way you went about making it work. If a pictures worth a thousand words your video is worth 10,000 words. From all the .1%off people here, thanks for going to the effort off explaining it further.

Are you giving away another?